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SunFounder Euler Kit for Raspberry Pi Pico Manual

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Table of Contents

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SunFounder Euler Kit for Raspberry Pi
Pico
Release 1.0
www.sunfounder.com
May 24, 2024

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Summary of Contents for SunFounder Euler Kit for Raspberry Pi Pico

  • Page 1 SunFounder Euler Kit for Raspberry Pi Pico Release 1.0 www.sunfounder.com May 24, 2024...

  • Page 3: Table Of Contents

    CONTENTS 1 Introduction to Raspberry Pi Pico Features ..........Pico’s Pins .
  • Page 4 2.36 PIR Motion Sensor ..........2.37 Water Level Sensor .
  • Page 5 4.41 6.5 Radio Frequency Identification ........264 4.42 7.1 Light Theremin .
  • Page 6 6.31 5.1 - Microchip - 74HC595 ........439 6.32 5.2 - Number Display .
  • Page 7 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 8 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • There will be a language popup in the upper right corner. Click on the menu button to choose another language. • Select the language from the inverted triangle box, and then click Done.
  • Page 9 • Or check out the code at Euler Kit - GitHub Content Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 10 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 CONTENTS...

  • Page 11: Introduction To Raspberry Pi Pico

    CHAPTER INTRODUCTION TO RASPBERRY PI PICO The Raspberry Pi Pico is a microcontroller board based on the Raspberry Pi RP2040 microcontroller chip. With Raspberry Pi Pico, you can learn MicroPython programming, take your first step into physical computing, or build a hardware project.

  • Page 12: Features

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 1.1 Features • 21 mm × 51 mm form factor • RP2040 microcontroller chip designed by Raspberry Pi in the UK • Dual-core Arm Cortex-M0+ processor, flexible clock running up to 133 MHz •...
  • Page 13 Raspberry Pi Pico design files • Raspberry Pi Pico STEP file Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 14 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Chapter 1. Introduction to Raspberry Pi Pico...

  • Page 15: What Is Included In This Kit

    You are welcome to send us the name of the missing or incorrect component if you find one. Here is the email: cs@sunfounder.com. Basic Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join?

  • Page 16: Breadboard

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products.

  • Page 17: Jumper Wires

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 18: Resistor

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 2.3 Resistor...
  • Page 19 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 As shown in the card, each color stands for a number. Black Brown Orange Yellow Green Blue Violet Grey White Gold Silver 0.01 The 4- and 5-band resistors are frequently used, on which there are 4 and 5 chromatic bands.
  • Page 20 You can learn more about resistor from Wiki: Resistor - Wikipedia. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...

  • Page 21: Transistor

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.4 Transistor Transistor is a semiconductor device that controls current by current. It functions by amplifying weak signal to larger amplitude signal and is also used for non-contact switch. A transistor is a three-layer structure composed of P-type and N-type semiconductors. They form the three regions internally.
  • Page 22 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 When a High level signal goes through an NPN transistor, it is energized. But a PNP one needs a Low level signal to manage it. Both types of transistor are frequently used for contactless switches, just like in this experiment.
  • Page 23 • (For Piper Make User) 2.13 Reaction Game Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 24: Capacitor

    104=10x10^4pF Unit Conversion 1F=10^3mF=10^6uF=10^9nF=10^12pF Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 25: Diode

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.6 Diode A diode is an electronic component with two electrodes. It allows current to flow in only one direction, which is often called the “Rectifying” function. Thus, a diode can be thought of as an electronic version of a check valve.

  • Page 26: 74Hc595

    • Diode - Wikipedia Chip Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 27 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • The memory register outputs a Bus with a parallel 8-bit and in three states. • When OE is enabled (low level), the data in memory register is output to the bus(Q0 ~ Q7).

  • Page 28: Ic L293D

    • (For Arduino User) 5.4 - 8x8 Pixel Graphics Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 29 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 L293D is a 4-channel motor driver integrated by chip with high voltage and high current. It’s designed to connect to standard DTL, TTL logic level, and drive inductive loads (such as relay coils, DC, Stepper Motors) and power switching transistors etc.
  • Page 30 (For Piper Make User) 2.12 Smart Fan Display Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Chapter 2. What is Included in This Kit...

  • Page 31: Led

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks.
  • Page 32 • (For Piper Make User) 2.13 Reaction Game Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 33: Rgb Led

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.10 RGB LED RGB LEDs emit light in various colors. An RGB LED packages three LEDs of red, green, and blue into a transparent or semitransparent plastic shell. It can display various colors by changing the input voltage of the three pins and superimpose them, which, according to statistics, can create 16,777,216 different colors.
  • Page 34 (For Piper Make User) 2.4 Rainbow Light Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Chapter 2. What is Included in This Kit...

  • Page 35: Led Bar Graph

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks.
  • Page 36 • (For Piper Make User) 2.8 Light Intensity Display Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 37: 7-Segment Display

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.12 7-segment Display A 7-segment display is an 8-shaped component which packages 7 LEDs. Each LED is called a segment - when ener- gized, one segment forms part of a numeral to be displayed.
  • Page 38 • (For Arduino User) 5.2 - Number Display Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 39: 4-Digit 7-Segment Display

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.13 4-Digit 7-Segment Display 4-Digit 7-segment display consists of four 7- segment displays working together. The 4-digtal 7-segment display works independently. It uses the principle of human visual persistence to quickly display the characters of each 7-segment in a loop to form continuous strings.
  • Page 40 • (For Arduino User) 5.3 - Time Counter Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 41: Led Matrix

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.14 LED Matrix Generally, LED dot matrix can be categorized into two types: common cathode (CC) and common anode (CA). They look much alike, but internally the difference lies. You can tell by test. A CA one is used in this kit. You can see 788BS labeled at the side.
  • Page 42 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 LED, and COL is cathode; it’s contrary for a CC one. One thing in common: for both types, pin 13, 3, 4, 10, 6, 11, 15, and 16 are all COL, when pin 9, 14, 8, 12, 1, 7, 2, and 5 are all ROW. If you want to turn on the first LED at the top left corner, for a CA LED dot matrix, just set pin 9 as High and pin 13 as Low, and for a CC one, set pin 13 as High and pin 9 as Low.

  • Page 43: I2C Lcd1602

    • (For Arduino User) 5.4 - 8x8 Pixel Graphics Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 44 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 I2C Address The default address is basically 0x27, in a few cases it may be 0x3F. Taking the default address of 0x27 as an example, the device address can be modified by shorting the A0/A1/A2 pads;...
  • Page 45 • (For Arduino User) 3.4 - Liquid Crystal Display Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 46: Ws2812 Rgb 8 Leds Strip

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.16 WS2812 RGB 8 LEDs Strip The WS2812 RGB 8 LEDs Strip is composed of 8 RGB LEDs. Only one pin is required to control all the LEDs. Each RGB LED has a WS2812 chip, which can be controlled independently. It can realize 256-level brightness display and complete true color display of 16,777,216 colors.

  • Page 47: Buzzer

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Sound Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 48 (For Piper Make User) 2.13 Reaction Game Actuators Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 49: Dc Motor

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Ready to explore and create with us? Click [] and join today! 2.18 DC Motor This is a 3V DC motor. When you give a high level and a low level to each of the 2 terminals, it will rotate.
  • Page 50 • (For Piper Make User) 2.12 Smart Fan Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 51: Servo

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions.
  • Page 52 • (For Piper Make User) 2.9 Lucky Cat Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 53: Centrifugal Pump

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.20 Centrifugal Pump The centrifugal pump converts rotational kinetic energy into hydrodynamic energy to transport fluid. The rotation energy comes from the electric motor. The fluid enters the pump impeller along or near the rotating shaft, is accelerated by the impeller, flows radially outward into the diffuser or volute chamber, and then flows out from there.

  • Page 54: Relay

    • (For Arduino User) 3.6 - Pumping Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 55 • (For Arduino User) 2.16 - Control Another Circuit Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 56: Power Supply Module

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 2.22 Power Supply Module A 3.3V and 5V breadboard power module with series diode and reverse polarity protection. The module can accept 6.5V to 12V input, and can generate 3.3V and +5V.
  • Page 57 (For Arduino User) 3.6 - Pumping Controller Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 58: Button

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.23 Button Buttons are a common component used to control electronic devices. They are usually used as switches to connect or break circuits. Although buttons come in a variety of sizes and shapes, the one used here is a 6mm mini-button as shown in the following pictures.
  • Page 59 • (For Piper Make User) 2.13 Reaction Game Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 60: Micro Switch

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.24 Micro Switch The construction of a micro switch is really simple. The main parts of the switch are: • 1.Plunger (Actuator) • 2.Cover • 3.Moving piece • 4.Support • 5.Case •...
  • Page 61 • (For Piper Make User) 2.3 Service Bell Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 62: Slide Switch

    (For Arduino User) 2.7 - Toggle Left and Right • (For Piper Make User) 2.5 Drum Kit Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Chapter 2. What is Included in This Kit...

  • Page 63: Potentiometer

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills.
  • Page 64 • (For Piper Make User) 2.7 Swing Servo Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 65: Infrared-Receiver

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.27 Infrared-Receiver 2.27.1 IR Receiver Module • S: Signal output • +VCC • -: GND An infrared-receiver is a component which receives infrared signals and can independently receive infrared rays and output signals compatible with TTL level.
  • Page 66 • (For Arduino User) 6.4 - IR Remote Control Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 67: Joystick

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.28 Joystick The basic idea of a joystick is to translate the movement of a stick into electronic information that a computer can process. In order to communicate a full range of motion to the computer, a joystick needs to measure the stick’s position on two axes –...
  • Page 68 • (For Arduino User) 4.1 - Toggle the Joystick Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 69: Keypad

    • (For Arduino User) 4.2 - 4x4 Keypad Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 70: Mpr121

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions.
  • Page 71 • (For Arduino User) 4.3 - Electrode Keyboard Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 72: Mfrc522 Module

    (For Arduino User) 6.5 - Radio Frequency Identification Sensor Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 73: Photoresistor

    • (For Piper Make User) 2.8 Light Intensity Display Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 74: Thermistor

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions.
  • Page 75 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Thermistors are of two opposite fundamental types: • With NTC thermistors, resistance decreases as temperature rises usually due to an increase in conduction elec- trons bumped up by thermal agitation from valency band. An NTC is commonly used as a temperature sensor, or in series with a circuit as an inrush current limiter.

  • Page 76: Tilt Switch

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 77 • (For Piper Make User) 2.10 Flowing LEDs Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 78: Reed Switch

    • (For Arduino User) 2.9 - Feel the Magnetism Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 79: Pir Motion Sensor

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions.
  • Page 80 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 After the sensing module is wired, there is a one-minute initialization. During the initialization, module will output for 0~3 times at intervals. Then the module will be in the standby mode. Please keep the interference of light source and other sources away from the surface of the module so as to avoid the misoperation caused by the interfering signal.

  • Page 81: Water Level Sensor

    • (For Piper Make User) 2.9 Lucky Cat Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 82: Ultrasonic Module

    • (For Piper Make User) 2.6 Smart Water Tank Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 83 • (For Piper Make User) 2.11 Reversing System Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 84: Dht11 Humiture Sensor

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2.39 DHT11 Humiture Sensor The digital temperature and humidity sensor DHT11 is a composite sensor that contains a calibrated digital signal output of temperature and humidity. The technology of a dedicated digital modules collection and the temperature and humidity sensing technology are applied to ensure that the product has high reliability and excellent long-term stability.

  • Page 85: Mpu6050

    • (For Arduino User) 6.2 - Temperature - Humidity Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 86 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3-axis Accelerometer The accelerometer works on the principle of piezo electric effect, the ability of certain materials to generate an electric charge in response to applied mechanical stress. Here, imagine a cuboidal box, having a small ball inside it, like in the picture above. The walls of this box are made with piezo electric crystals.
  • Page 87 (For Arduino User) 6.3 - 6-axis Motion Tracking Communication Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 88: Esp8266 Module

    Example • Play Pico with APP Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 89: Electronic Circuit

    CHAPTER THREE ELECTRONIC CIRCUIT There are many things you use every day that are powered by electricity, such as the lights in your home and the computer you are reading this on. In order to use electricity, you must create an electrical circuit. An electric circuit consists of metal wires and electrical and electronic components.
  • Page 90 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 With electricity, you can create works with light, sound, and motion. You can light up an LED by connecting the long pin to the positive terminal and the short pin to the negative terminal. The LED will break down very quickly if you do this, so you need to add a 220* resistor inside the circuit to protect it.

  • Page 91: Hello, Breadboard

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 You may have questions this time: how do I build this circuit? Hold the wires by hand, or tape the pins and wires? In this situation, solderless breadboards will be your strongest allies.
  • Page 92 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 1. Each half-row group (such as column A-E in row 1 or column F-J in row 3) is connected. Therefore, if an electrical signal flows in from A1, it can flow out from B1, C1, D1, E1, but not from F1 or A2.

  • Page 93: Beware Of Short Circuits

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3.2 Beware of short circuits Short circuits can occur when two components that shouldn’t be connected are “accidentally” connected. This kit includes resistors, transistors, capacitors, LEDs, etc. that have long metal pins that can bump into each other and cause a short.

  • Page 94: Protection Of The Circuit

    5V power supply, we need to connect a minimum of 160ohm ((5-1.8)/20mA) resistor in order not to burn out the LED. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 95: For Micropython User

    We recommend that you read the chapters in order. 1. Get Started Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 96 MicroPython - Wikipedia • Reference: realpython Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 97: Install And Introduce Thonny Ide

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.2 1.2 Install and Introduce Thonny IDE To program Pico with MicroPython, you need an integrated development environment (IDE), here we recommend Thonny. Python 3.7 is pre-installed in Thonny, so all you need to do is install it.
  • Page 98 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3. Next, click Next and Install to finish installing Thonny. Chapter 4. For MicroPython User...
  • Page 99 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.2.2 Thonny IDE Introduction • Ref: realpython 4.2. 1.2 Install and Introduce Thonny IDE...
  • Page 100 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • • A: The menu bar containing New, Save, Edit, View, Run, Debug, etc. • B: This paper icon allows you to create a new file. • C: If your Raspberry Pi Pico is already plugged into your computer, you can open files that already exist on your computer or Pico.

  • Page 101: Install Micropython Firmware On Your Pico

    • The Raspberry Pi Pico interpreter is only available in version 3.3.3 or higher version of Thonny. If you are running an older version, please update. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 102 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2. Press and hold the BOOTSEL button and then connect the Pico to computer via a Micro USB cable. Release the BOOTSEL button after your Pico is mount as a Mass Storage Device called RPI-RP2.
  • Page 103 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4. In the Target volume, the volume of the Pico you just plugged in will automatically appear, and in the Micropy- thon variant, select Raspberry Pi.Pico/Pico H. 4.3. 1.3 Install MicroPython Firmware on Your Pico...
  • Page 104 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 5. Click the Install button, wait for the installation to complete and then close this page. Chapter 4. For MicroPython User...
  • Page 105 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Congratulations, now your Raspberry Pi Pico is ready to go. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 106: Download And Upload The Code

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.4 1.4 Download and Upload the Code Download the Code Download the relevant code from the link below. • SunFounder Euler Kit Example • Or check out the code at Euler Kit - GitHub 4.4.1 Upload the Libraries to Pico...
  • Page 107 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4. Select “MicroPython (Raspberry Pi Pico)” from the interpreter selection button in the bottom right corner, but make sure that your Raspberry Pi Pico is connected to your computer via a Micro USB cable.
  • Page 108 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6. Each project has its own .py file with serial numbers. To avoid increasing Pico’s usage, only select .py files and folders without serial numbers. 7. It will take a while for the file to upload after clicking Upload to.
  • Page 109 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 8. Now you will see the files you just uploaded inside your drive Raspberry Pi Pico. 4.4. 1.4 Download and Upload the Code...

  • Page 110: Quick Guide On Thonny

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 111 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3. Run the Code To run the script, click the Run current script button or press F5. If the code contains any information that needs to be printed, it will appear in the Shell; otherwise, only the following information will appear.
  • Page 112 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • The third line is a command from Thonny telling the MicroPython interpreter on your Pico to run the contents of the script area - “EDITOR_CONTENT”. • If there is any message after the third line, it is usually a message that you tell MicroPython to print, or an error message for the code.
  • Page 113 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Then click OK after entering the file name and extension .py. On the Raspberry Pi Pico drive, you will see your saved file. Note: Regardless of what name you give your code, it’s best to describe what type of code it is, and not give it a meaningless name like abc.py.
  • Page 114 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.5.2 Create File and Run it The code is shown directly in the code section. You can copy it to Thonny and run it as follows. 1. Create a new file Open Thonny IDE, click New button to create a new blank file.
  • Page 115 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3. Select Correct Interpreter Plug the Pico into your computer with a micro USB cable and select the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner. 4. Run and Save the Code You need click Run Current Script or simply press F5 to run it.
  • Page 116 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Thonny saves your program on the Raspberry Pi Pico when you tell him to, so if you unplug the Pico and plug it into someone else’s computer, your program remains intact.
  • Page 117 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Regardless of what name you give your code, it’s best to describe what type of code it is, and not give it a meaningless name like abc.py. When you save the code as main.py, it will run automatically when the power is turned on.

  • Page 118: (Optional) Micropython Basic Syntax

    • The second is to open the file preview directly by clicking View->**File**-> and then double- clicking on the corresponding .py file to open it. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 119 Traceback (most recent call last): File "<stdin>", line 2 SyntaxError: invalid syntax Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 120 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.6.2 Comments The comments in the code help us understand the code, make the entire code more readable and comment out part of the code during testing, so that this part of the code does not run.
  • Page 121 As long as the string is not assigned to a variable, MicroPython will ignore it after reading the code and treat it as if you made a multi-line comment. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 122 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions.
  • Page 123 A) >>> %Run -c $EDITOR_CONTENT 5 lily Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 124 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.6.5 If Else Decision making is required when we want to execute a code only if a certain condition is satisfied. test expression: statement(s) Here, the program evaluates the test expression and executes the statement only when the test expression is True.
  • Page 125 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 if. . . else test expression: Body of else: Body of else The if..else statement evaluates test expression and will execute the body of if only when the test condition is True.
  • Page 126 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 if. . . elif. . . else test expression: Body of elif test expression: Body of elif else: Body of else Elif is short for else if. It allows us to check multiple expressions.
  • Page 127 >>> %Run -c $EDITOR_CONTENT Above ten, and also above 20! Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 128 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.6.6 While Loops The while statement is used to execute a program in a loop, that is, to execute a program in a loop under certain conditions to handle the same task that needs to be processed repeatedly.
  • Page 129 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) Break Statement With the break statement we can stop the loop even if the while condition is true: while > print(x) break >>> %Run -c $EDITOR_CONTENT While Loop with Else Like the if loop, the while loop can also have an optional else block.
  • Page 130 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) Game Over Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 131 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 numbers [1, 2, 3, 4] numbers: sum+val print("The sum is", sum) >>> %Run -c $EDITOR_CONTENT The sum is 10 The break Statement With the break statement we can stop the loop before it has looped through all the items:...
  • Page 132 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The continue Statement With the continue statement we can stop the current iteration of the loop, and continue with the next: numbers [1, 2, 3, 4] numbers: continue print(val) >>> %Run -c $EDITOR_CONTENT The range() function We can use the range() function to generate a sequence of numbers.
  • Page 133 >>> %Run -c $EDITOR_CONTENT Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 134 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.6.8 Functions In MicroPython, a function is a group of related statements that perform a specific task. Functions help break our program into smaller modular blocks. As our plan becomes larger and larger, functions make it more organized and manageable.
  • Page 135 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The return Statement The return statement is used to exit a function and return to the place where it was called. Syntax of return return [expression_list] The statement can contain an expression that is evaluated and returns a value. If there is no expression in the statement, or the return statement itself does not exist in the function, the function will return a None object.
  • Page 136 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 If it is called with a different number of arguments, the interpreter will display an error message. The following is the call to this function, which contains one and one no arguments and their respective error messages.
  • Page 137 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Keyword Arguments When we call a function with certain values, these values will be assigned to arguments based on their position. For example, in the above function welcome(), when we called it as welcome(“Lily”, “Welcome to China”), the value “Lily”...
  • Page 138 • Recursive calls are expensive (inefficient) as they take up a lot of memory and time. • Recursive functions are hard to debug. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 139 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks.
  • Page 140 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 >>> %Run -c $EDITOR_CONTENT <class str > <class int > <class list > >>> Setting the Specific Data Type If you want to specify the data type, you can use the following constructor functions:...
  • Page 141 Note: You cannot convert complex numbers into another number type. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 142 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Arithmetic Operators You can use arithmetic operators to do some common mathematical operations. Operator Name Addition Subtraction Multiplication Division Modulus Exponentiation Floor division print(a) print(b) print(c) print(d) print(e) print(f) print(g) >>> %Run -c $EDITOR_CONTENT 1.666667...
  • Page 143 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Assignment operators Assignment operators can used to assign values to variables. Operator Example Same As a = 6 a =6 a += 6 a = a + 6 a -= 6...
  • Page 144 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Logical Operators Logical operators are used to combine conditional statements. Operator Description Returns True if both statements are true Returns True if one of the statements is true Reverse the result, returns False if the result is true print(a >...
  • Page 145 << >>> %Run -c $EDITOR_CONTENT >>> Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 146 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products.
  • Page 147 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Check List items Print the second item of the list: ["Banana", 255, False, 3.14] A_list print(A_list[1]) >>> %Run -c $EDITOR_CONTENT [255] Print the last one item of the list: A_list ["Banana", 255, False, 3.14] print(A_list[-1]) >>>...
  • Page 148 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Add List Items Using the append() method to add an item: C_list ["Red", "Blue", "Green"] C_list.append("Orange") print(C_list) >>> %Run -c $EDITOR_CONTENT [ Red , Blue , Green , Orange ] Insert an item as the second position: C_list ["Red", "Blue", "Green"]...

  • Page 149: Hello, Led

    >>> %Run -c $EDITOR_CONTENT 2. Output & Input Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 150 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 To build the circuit, let’s follow the current’s direction! 1. The LED is powered by the GP15 pin of the Pico board, and the circuit begins here. 2. To protect the LED, the current must pass through a 220 ohm resistor. One end of the resistor should be inserted into the same row as the Pico GP15 pin (row 20 in my circuit), and the other end should be inserted into the free row of the breadboard (row 24).
  • Page 151 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Open the 2.1_hello_led.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 152 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Run it and you will be able to light up the LED. Next, we try to add the “extinguished” statement: import machine machine.Pin(15, machine.Pin.OUT) led.value(1) led.value(0) Based on the code line, this program will turn on the LED first, then turn it off. But when you use it, you will find that this is not the case.
  • Page 153 True: led.toggle() utime.sleep(1) Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 154: Display The Level

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.8 2.2 Display the Level The first project is simply to make the LED blink. For this project, let’s use the LED Bar Graph, which contains 10 LEDs in a plastic enclosure, generally used to display power or volume levels.
  • Page 155 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 In the LED Bar Graph, there are 10 LEDs, each of which can be controlled individually. Each LED’s anode is connected to GP6*GP15, and its cathode to a 220ohm resistor, and then to GND.
  • Page 156 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 2.2_display_the_level.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 157 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The LED Bar consists of ten LEDs that are controlled by ten pins, which means that we must define these pins. The process would be too tedious if we defined them one by one. So, here we use Lists.

  • Page 158: Fading Led

    Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 159 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Pico supports PWM on each GPIO pin, but there are actually 16 independent PWM outputs (instead of 30), distributed between GP0 to GP15 on the left, and the right GPIO’s PWM output is identical to the left.
  • Page 160 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 2.3_fading_led.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 161: Colorful Light

    When it is 32768, it will turn on half a pulse, so the LED will be half as bright when fully on. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 162 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Schematic The PWM pins GP13, GP14 and GP15 control the Red, Green and Blue pins of the RGB LED respectively, and connect the common cathode pin to GND. This allows the RGB LED to display a specific color by superimposing light on these pins with different PWM values.
  • Page 163 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 2.4_colorful_light.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 164 PWM, we have defined color_to_duty() and interval_mapping () function to map the color values to the duty values. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 165: Reading Button Value

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions.
  • Page 166 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: A four-pin button is shaped like an H. Its left two pins or right two pins are connected, which means that when it crosses the central gap, it connects two half rows with the same row number. (For example, in my circuit, E23 and F23 are already connected, as are E25 and F25).
  • Page 167 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) while True: button.value() print("You pressed the button!") utime.sleep(1) As soon as the code runs, the shell prints “You pressed the button!” Pull-up Working Mode The next part is the wiring and code when you use the button in the pull-up mode.

  • Page 168: Tilt It

    Also see the reference here: • machine.Pin Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 169 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 When you put it upright, GP14 will get high; after tilting it, GP14 will get low. The purpose of the 10K resistor is to keep the GP14 in a stable low state when the tilt switch is in a tilted state.

  • Page 170: Toggle Left And Right

    After the program runs, when you tilt the breadboard (tilt switch), “The switch works!” will appear in the shell. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 171 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 GP14 will get a different level, when you toggle the slide switch to the right or left. The purpose of the 10K resistor is to keep the GP14 low during toggling (not toggling to the far left and not toggling to the far right).
  • Page 172 After the program runs, when you toggle the slide switch to the right, “The switch works!” will appear in the shell. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 173: Press Gently

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.14 2.8 Press Gently Micro Switch is also a 3-pin device, the sequence of the 3 pins are C (common pin), NO (normally open) and NC (normally closed) . When the micro switch is not pressed, 1 (C) and 3 (NC) are connected together, when pressed 1 (C) and 2 (NO) are connected together.
  • Page 174 After the program runs, when you toggle the slide switch to the right, “The switch works!” will appear in the shell. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 175: Feel The Magnetism

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 4.15 2.9 Feel the Magnetism The most common type of reed switch contains a pair of magnetizable, flexible, metal reeds whose end portions are separated by a small gap when the switch is open.
  • Page 176 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 2.9_feel_the_magnetism.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 177 , the callback function we defined before. • machine.Pin.irq - Micropython Docs Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...

  • Page 178: Detect Human Movement

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.16 2.10 Detect Human Movement Passive infrared sensor (PIR sensor) is a common sensor that can measure infrared (IR) light emitted by objects in its field of view. Simply put, it will receive infrared radiation emitted from the body, thereby detecting the movement of people and other animals.
  • Page 179 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Code Note: • Open the 2.10_detect_human_movement.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it.
  • Page 180 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) motion_detected(pin): print("Somebody here!") pir_sensor.irq(trigger=machine.Pin.IRQ_RISING, handler=motion_detected) After the program runs, if the PIR module detects someone nearby, the Shell will print out “Somebody here!” Learn More PIR is a very sensitive sensor. In order to adapt it to the environment of use, it needs to be adjusted. Let the side with the 2 potentiometers facing you, turn both potentiometers counterclockwise to the end and insert the jumper cap on the pin with L and the middle pin.
  • Page 181 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 1. Trigger Mode Let’s take a look at the pins with jumper cap at the corner. It allows PIR to enter Repeatable trigger mode or Non-repeatable trigger mode At present, our jumper cap connects the middle Pin and L Pin, which makes the PIR in non-repeatable trigger mode.

  • Page 182: Turn The Knob

    0-3 meters. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 183 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Pico has three GPIO pins that can use analog input, GP26, GP27, GP28. That is, analog channels 0, 1, and 2. In addition, there is a fourth analog channel, which is connected to the built-in temperature sensor and will not be introduced here.
  • Page 184 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The potentiometer is an analog device and when you turn it in 2 different directions. Connect the middle pin of the potentiometer to the analog pin GP28. The Raspberry Pi Pico contains a multi-channel, 16-bit analog-to-digital converter.
  • Page 185 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 2.11_turn_the_knob.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 186: Feel The Light

    ADC, scaled such that the minimum value is 0 and the maximum value is 65535. • machine.ADC - MicroPython Docs Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 187 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 When the light is enhanced, the resistance of the photoresistor decreases, then its voltage decreases, so the value from GP28 will decrease; if the light is strong enough, the resistance of the photoresistor will be close to 0, and the value of GP28 will be close to 0.

  • Page 188: Thermometer

    After the program runs, the Shell prints out the photoresistor values. You can shine a flashlight on it or cover it up with your hand to see how the value will change. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 189 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 In this circuit, the 10K resistor and the thermistor are connected in series, and the current passing through them is the same. The 10K resistor acts as a protection, and the GP28 reads the value after the voltage conversion of the thermistor.
  • Page 190 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner. • For detailed tutorials, please refer to Open and Run Code Directly. import machine...
  • Page 191 (Cel, Fah)) Print centigrade degree, Fahrenheit degree and their units in the shell. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 192: Feel The Water Level

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.20 2.14 Feel the Water Level Water sensor is designed for water detection, which can be widely used in sensing rainfall, water level, and even liquid leakage. It measures the water level by having a series of exposed parallel wire traces to measure the size of the water drops/volume.
  • Page 193 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 2.14_feel_the_water_level.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 194 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 195: Two Kinds Of Transistors

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.21 2.15 Two Kinds of Transistors This kit is equipped with two types of transistors, S8550 and S8050, the former is PNP and the latter is NPN. They look very similar, and we need to check carefully to see their labels. When a High level signal goes through an NPN transistor, it is energized.
  • Page 196 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 In this circuit, when the button is pressed, GP14 is high. By programming GP15 to output high, after a 1k current limiting resistor (to protect the transistor), the S8050 (NPN transistor) is allowed to conduct, thus allowing the LED to light up.
  • Page 197 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Way to connect PNP(S8550) transistor In this circuit, GP14 is low by the default and will change to high when the button is pressed. By programming GP15 to output low, after a 1k current limiting resistor (to protect the transistor), the S8550 (PNP transistor) is allowed to conduct, thus allowing the LED to light up.
  • Page 198 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 2.15_transistor.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 199: Control Another Circuit

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 200 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Chapter 4. For MicroPython User...
  • Page 201 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 A diode (continuity diode) is used here to protect the circuit. The cathode is the end with the silver ribbon connected to the power supply, and the anode is connected to the transistor.
  • Page 202 By switching one end of the load circuit from pin 3 to pin 4, you will be able to get exactly the opposite operating state. 3. Sound & Display & Movement Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 203: Beep

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products.
  • Page 204 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Two types of buzzers are included in the kit. We need to use active buzzer. Turn them around, the sealed back (not the exposed PCB) is the one we want. The buzzer needs to use a transistor when working, here we use S8050 (NPN Transistor).

  • Page 205: Custom Tone

    After the code runs, you will hear a beep every second. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 206 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 When the GP15 output is high, after the 1K current limiting resistor (to protect the transistor), the S8050 (NPN tran- sistor) will conduct, so that the buzzer will sound. The role of S8050 (NPN transistor) is to amplify the current and make the buzzer sound louder. In fact, you can also connect the buzzer directly to GP15, but you will find that the buzzer sound is smaller.
  • Page 207 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 3.2_custom_tone.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 208 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? Chapter 4. For MicroPython User...

  • Page 209: Rgb Led Strip

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks.
  • Page 210 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Warning: One thing you need to pay attention to is current. Although the LED Strip with any number of LEDs can be used in Pico, the power of its VBUS pin is limited. Here, we will use eight LEDs, which are safe.
  • Page 211 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 In the ws2812 library, we have integrated related functions into the WS2812 class. You can use the RGB LED Strip with the following statement. from ws2812 import WS2812 Declare a WS2812 type object, named “ws”, it is connected to “pin”, there are “number” RGB LEDs on the WS2812 strip.

  • Page 212: Liquid Crystal Display

    True: flowing_light() print(ws[0]) Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 213 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Here we will use the I2C0 interface to control the LCD1602 and display text. Schematic Wiring 4.26. 3.4 Liquid Crystal Display...
  • Page 214 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 3.4_liquid_crystal_display.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 215: Small Fan

    If you call this statement multiple times, lcd will superimpose the texts. This requires the use of the following statement to clear the display. lcd.clear() Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 216 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 In this circuit, you will see that the button is connected to the RUN pin. This is because the motor is operating with too much current, which may cause the Pico to disconnect from the computer, and the button needs to be pressed (for the Pico’s RUN pin to receive a low level) to reset.
  • Page 217 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Since DC motors require a high current, we use a power supply module to power the motor here for safety reasons. Code Note: • Open the 3.5_small_fan.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script”...

  • Page 218: Pumping

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 219 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4. If water does not come out of the tube, there may be residual water in the tube blocking the air flow and needs to be drained first. Schematic In this circuit, you will see that the button is connected to the RUN pin. This is because the motor is operating with too much current, which may cause the Pico to disconnect from the computer, and the button needs to be pressed (for the Pico’s RUN pin to receive a low level) to reset.
  • Page 220 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 3.6_pumping.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 221: Swinging Servo

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 222 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Chapter 4. For MicroPython User...
  • Page 223 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Orange wire is signal and connected to GP15. • Red wire is VCC and connected to VBUS(5V). • Brown wire is GND and connected to GND. Code 4.29. 3.7 Swinging Servo...
  • Page 224 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: • Open the 3.7_swinging_servo.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 225: Toggle The Joystick

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Finally, write the duty value into duty_u16(). 4. Controller Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 226 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Code Note: • Open the 4.1_toggle_the_joystick.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it.

  • Page 227: 4X4 Keypad

    • The Z-axis is a digital value with a status of 1 or 0. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 228 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4 pull-down resistors are connected to each of the columns of the matrix keyboard, so that G6 ~ G9 get a stable low level when the keys are not pressed. The rows of the keyboard (G2 ~ G5) are programmed to go high; if one of G6 ~ G9 is read high, then we know which key is pressed.
  • Page 229 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 To make the wiring easier, in the above diagram, the column row of the matrix keyboard and the 10K resistors are inserted into the holes where G6 ~ G9 are located at the same time.
  • Page 230 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) key.append(characters[i][j]) row[i].low() [] : return None else: return last_key None while True: current_key readKey() current_key last_key: continue last_key current_key None: current_key print(current_key) time.sleep(0.1) After the program runs, the Shell will print out the keys you pressed on the Keypad.
  • Page 231 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 pressed and the state of the pressed button. (If you press '3' when you press '1', the judgement is tenable.) Prints the value of the currently pressed key when the condition is tenable.

  • Page 232: Electrode Keyboard

    If you press the buttons '1' and '3', there will return key = ['1','3']. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 233 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Code Note: 4.32. 4.3 Electrode Keyboard...
  • Page 234 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Open the 4.3_electrode_keyboard.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 235: Microchip - 74Hc595

    5. Microchip Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 236 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • When MR (pin10) is high level and OE (pin13) is low level, data is input in the rising edge of SHcp and goes to the memory register through the rising edge of SHcp.
  • Page 237 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 5.1_microchip_74hc595.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 238: Number Display

    Q7. In other words, writing the binary number “00000001” will make Q0 output high level and Q1~Q7 output low level. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 239 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 This means that it needs to be controlled by 8 digital signals at the same time to fully work and the 74HC595 can do this. • 7-segment Display Schematic 4.34. 5.2 Number Display...
  • Page 240 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Here the wiring principle is basically the same as 74HC595, the only difference is that Q0-Q7 are 5.1 Microchip - connected to the a ~ g pins of the 7 Segment Display.
  • Page 241 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) SEGCODE [0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f] machine.Pin(0,machine.Pin.OUT) rclk machine.Pin(1,machine.Pin.OUT) srclk machine.Pin(2,machine.Pin.OUT) hc595_shift(dat): rclk.low() time.sleep_ms(5) range(7, -1, -1): srclk.low() time.sleep_ms(5) value & (dat >> bit) sdi.value(value) time.sleep_ms(5) srclk.high() time.sleep_ms(5) time.sleep_ms(5) rclk.high() time.sleep_ms(5)
  • Page 242 Write these codes into hc595_shift() to make the LED Segment Display display the corresponding numbers. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 243: Time Counter

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 4.35 5.3 Time Counter...
  • Page 244 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Then G10 ~ G13 will select which 7-segment display to work. Wiring Code Note: • Open the 5.3_time_counter.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it.
  • Page 245 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) pickDigit(digit): range(4): placePin[i].value(1) placePin[digit].value(0) clearDisplay(): hc595_shift(0x00) hc595_shift(dat): rclk.low() time.sleep_us(200) range(7, -1, -1): srclk.low() time.sleep_us(200) value & (dat >> bit) sdi.value(value) time.sleep_us(200) srclk.high() time.sleep_us(200) time.sleep_us(200) rclk.high() time.sleep_us(200) while...
  • Page 246 Finally, convert and output this time value to the 4-digit 7-segment display and you’re done. • Time - MicroPython Docs Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Chapter 4. For MicroPython User...

  • Page 247: 8X8 Pixel Graphics

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks.
  • Page 248 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The 8x8 dot matrix is controlled by two 74HC595 chips, one controlling the rows and one controlling the columns, while these two chips share G18~G20, which can greatly save the I/O ports of the Pico board.
  • Page 249 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Step 2: Connect pin 11 of the two 74HC595 together, and then to GP20; then pin 12 of the two chips, and to GP19; next, pin 14 of the 74HC595 on the left side to GP18 and pin 9 to pin 14 of the second 74HC595.
  • Page 250 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Step 4: Now connect the ROWs of the LED dot matrix. The 74HC595 on the left controls ROW of the LED dot matrix. See the table below for the mapping. We can see, Q0-Q7 of the 74HC595 on the left are mapped with pin 9, 14, 8, 12, 1, 7, 2, and 5 respectively.
  • Page 251 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 5.4_8x8_pixel_graphics.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 252 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) time.sleep_us(30) srclk.high() hc595_out(): rclk.high() time.sleep_us(200) rclk.low() while True: range(0,8): hc595_in(glyph[i]) hc595_in(0x80>>i) hc595_out() Once the program is running, you will see a x graphic displayed on the 8x8 dot matrix.

  • Page 253: Measuring Distance

    [0xFF,0xFF,0xF7,0xEB,0xDF,0xBF,0xFF,0xFF] Or, you can try drawing your own graphics. 6. Advanced Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 254 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Chapter 4. For MicroPython User...
  • Page 255 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 6.1_measuring_distance.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 256 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) distance(): TRIG.low() time.sleep_us(2) TRIG.high() time.sleep_us(10) TRIG.low() while not ECHO.value(): pass time1 time.ticks_us() while ECHO.value(): pass time2 time.ticks_us() during time.ticks_diff(time2,time1) return during 10000 while True: distance() print Distance: %.2f...

  • Page 257: Temperature - Humidity

    Note that the ultrasonic sensor will pause the program when it is working, which may cause some lagging when writing complex projects. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 258 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 A basic digital temperature and humidity sensor, the DHT11, is provided in this kit. It uses a capacitive humidity sensor and thermistor to measure the surrounding air and outputs a digital signal on the data pins (no analog input pins are required).
  • Page 259 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring 4.38. 6.2 Temperature - Humidity...
  • Page 260 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 6.2_temperature_humidity.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 261: 6-Axis Motion Tracking

    {}, Humidity: {}".format(sensor.temperature, sensor.humidity)) time.sleep(1) Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 262 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Gyroscopes are used to measure orientation and angular velocity of a device or maintenance. Applications of gyro- scopes include anti-rollover and airbag systems for automobiles, motion sensing systems for smart devices, attitude stabilization systems for drones, and more.
  • Page 263 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 6.3_6axis_motion_tracking.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 264: Ir Remote Control

    %s, B: %s, Y: %s"%(mpu.gyro.x, mpu.gyro.y, mpu.gyro.z)) time.sleep(0.1) Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 265 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring 4.40. 6.4 IR Remote Control...
  • Page 266 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 6.4_ir_remote_control.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 267 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) data 0x16: return "0" data 0x0C: return "1" data 0x18: return "2" data 0x5E: return "3" data 0x08: return "4" data 0x1C: return "5" data 0x5A: return "6"...
  • Page 268 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) ir.error_function(print_error) # Show debug information try: while True: pass except KeyboardInterrupt: ir.close() The new remote control has a plastic piece at the end to isolate the battery inside. You need to pull out this plastic piece to power up the remote when you are using it.
  • Page 269 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) return "5" data 0x5A: return "6" data 0x42: return "7" data 0x52: return "8" data 0x4A: return "9" data 0x09: return "+" data 0x15: return "-" data...

  • Page 270: Radio Frequency Identification

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 271 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Here you need to use the libraries in mfrc522 folder, please check if it has been uploaded to Pico, for a detailed tutorial refer to Upload the Libraries to Pico.
  • Page 272 This function is used to write information to the card, press Enter key to finish writing. text is the information to be written to the card. 7. Funny Project Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...

  • Page 273: Light Theremin

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Ready to explore and create with us? Click [] and join today! 4.42 7.1 Light Theremin Theremin is an electronic musical instrument that does not require physical contact. Based on the position of the player’s hand, it produces different tones.
  • Page 274 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Before starting the project, wave your hand up and down over the photoresistor to calibrate the range of light intensity. The LED connected in GP16 is used to indicate the debugging time, and the LED is lit to indicate the start of debugging and off to indicate the end of debugging.
  • Page 275 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 7.1_light_theremin.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.

  • Page 276: Room Temperature Meter

    After five seconds, the LED will turn off, at which point we can wave our hands over the photoresistor and play. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 277 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Code Note: • Open the 7.2_room_temperature_meter.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it.

  • Page 278: Alarm Siren Lamp

    Note: If the code and wiring are fine, but the LCD still does not display content, you can turn the potentiometer on the back to increase the contrast. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 279 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • GP17 is connected to the middle pin of the slider, along with a 10K resistor and a capacitor (filter) in parallel to GND, which allows the slider to output a steady high or low level when toggled to the left or right.
  • Page 280 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Code Note: • Open the 7.3_alarm_siren_lamp.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it.
  • Page 281 LED will stop working. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 282: Passager Counter

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4.45 7.4 Passager Counter For large shopping malls, shopping centers, chain stores, airports, stations, museums, and public places such as exhi- bition halls, passenger traffic is an indispensable data. In airports and stations, for example, the number of people needs to be strictly controlled to ensure safety and smooth flow.
  • Page 283 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • This circuit is based on the with the addition of a PIR module. 5.3 Time Counter • The PIR will send a high signal of about 2.8s long when someone passes by.
  • Page 284 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Code Note: • Open the 7.4_passager_counter.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it.
  • Page 285 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • For detailed tutorials, please refer to Open and Run Code Directly. import machine import time pir_sensor machine.Pin(16, machine.Pin.IN) SEGCODE [0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f] machine.Pin(18,machine.Pin.OUT) rclk machine.Pin(19,machine.Pin.OUT) srclk machine.Pin(20,machine.Pin.OUT) placePin [10,13,12,11] range(4): placePin.append(None) placePin[i] machine.Pin(pin[i], machine.Pin.OUT)

  • Page 286: Game - 10 Second

    When the code is run, the number on the 4-digit 7-segment display will be added by one if someone passes in front of the PIR module. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 287 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • This circuit is based on with the addition of a tilt switch. 5.3 Time Counter • GP16 is high when the tilt switch is upright; low when tilted. Wiring 4.46. 7.5 GAME - 10 Second...
  • Page 288 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 7.5_game_10_second.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 289 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) clearDisplay(): hc595_shift(0x00) hc595_shift(dat): rclk.low() time.sleep_us(200) range(7, -1, -1): srclk.low() time.sleep_us(200) value & (dat >> bit) sdi.value(value) time.sleep_us(200) srclk.high() time.sleep_us(200) time.sleep_us(200) rclk.high() #time.sleep_us(200) display(num): pickDigit(0) hc595_shift(SEGCODE[num%10]) pickDigit(1) hc595_shift(SEGCODE[num%100//10])

  • Page 290: Traffic Light

    You win if you manage to keep the displayed count at 10.00. The game will continue after one more shake. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 291 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • This circuit is based on the with the addition of 3 LEDs. 5.3 Time Counter • The 3 red, yellow and green LEDs are connected to GP7~GP9 respectively. Wiring 4.47. 7.6 Traffic Light...
  • Page 292 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 7.6_traffic_light.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 293 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) pickDigit(digit): range(4): placePin[i].value(1) placePin[digit].value(0) clearDisplay(): hc595_shift(0x00) hc595_shift(dat): rclk.low() time.sleep_us(200) range(7, -1, -1): srclk.low() time.sleep_us(200) value & (dat >> bit) sdi.value(value) time.sleep_us(200) srclk.high() time.sleep_us(200) time.sleep_us(200) rclk.high() display(num): pickDigit(0)

  • Page 294: Guess Number

    When the code runs, the green LED stays on for 30 seconds, the yellow LED stays on for 5 seconds, and the green LED stays on for 30 seconds. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 295 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 This circuit is based on with the addition of an I2C LCD1602 to display the pressed keys. 4.2 4x4 Keypad Wiring 4.48. 7.7 Guess Number...
  • Page 296 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 To make the wiring easier, in the above diagram, the column row of the matrix keyboard and the 10K resistors are inserted into the holes where G10 ~ G13 are located at the same time.
  • Page 297 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) range(4): col.append(None) col[i] machine.Pin(pin[i], machine.Pin.IN) readKey(): range(4): row[i].high() range(4): if(col[j].value() key.append(characters[i][j]) row[i].low() [] : return None else: return # init/reset number # reset the result as False for lcd show...
  • Page 298 Note: If the code and wiring are fine, but the LCD still does not display content, you can turn the potentiometer on the back to increase the contrast. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 299: Rfid Music Player

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products.
  • Page 300 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Chapter 4. For MicroPython User...
  • Page 301 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code 1. Open the 6.5_rfid_write.py file under the path of euler-kit/micropython, then click “Run Current Script” or simply press F5 to run it. 2. After running, type EEFGGFEDCCDEEDD EEFGGFEDCCDEDCC in the Shell and then put the card (or key) close to the MFRC522 module, this way an Ode an Joy score is stored in.
  • Page 302 (or key), and the RGB strip will light up in a random color. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 303: Fruit Piano

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products.
  • Page 304 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Code Note: • Open the 7.9_fruit_piano.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it.
  • Page 305 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) NOTE_B4 NOTE_C5 NOTE_D5 NOTE_E5 buzzer machine.PWM(machine.Pin(15)) note [NOTE_A3,NOTE_B3,NOTE_C4,NOTE_D4,NOTE_E4,NOTE_F4,NOTE_G4,NOTE_A4,NOTE_B4,NOTE_C5, NOTE_D5,NOTE_E5] tone(pin,frequency): pin.freq(frequency) pin.duty_u16(30000) noTone(pin): pin.duty_u16(0) # rgb led machine.PWM(machine.Pin(13)) green machine.PWM(machine.Pin(12)) blue machine.PWM(machine.Pin(11)) red.freq(1000) green.freq(1000) blue.freq(1000) interval_mapping(x, in_min, in_max, out_min, out_max):...

  • Page 306: Reversing Aid

    After the program runs, touch the fruit gently, the buzzer will sound the corresponding tone and the RGB light will flash once randomly. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 307 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring 4.51. 7.10 Reversing Aid...
  • Page 308 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 7.10_reversing_aid.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 309 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) distance(): timeout=10000*5/340 TRIG.low() time.sleep_us(2) TRIG.high() time.sleep_us(10) TRIG.low() timeout_start time.ticks_ms() # For timeout, re-read distance while not ECHO.value(): waiting_time time.ticks_ms() waiting_time timeout_start > timeout: return time1 time.ticks_us() while ECHO.value():...

  • Page 310: Somatosensory Controller

    • To avoid interfering with the LED or buzzer timing, we created a separate thread for ranging in this example. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 311 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The MPU6050 calculates the attitude angle based on the acceleration values in each direction. The program will control the servo to make the corresponding deflection angle as the attitude angle changes.
  • Page 312 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 7.11_somatosensory_controller.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 313 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • For detailed tutorials, please refer to Open and Run Code Directly. • Here you need to use the imu.py and vector3d.py, please check if it has been uploaded to Pico, for a detailed...

  • Page 314: Digital Bubble Level

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 315 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The MPU6050 takes the acceleration values in each direction and calculates the attitude angle. As a result, the program draws a 2x2 dot on the dot matrix based on data from the two 74HC595 chips.
  • Page 316 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • Open the 7.12_digital_bubble_level.py file under the path of euler-kit/micropython or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it. • Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
  • Page 317 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) return -math.degrees(radians) get_x_rotation(x,y,z): radians math.atan2(y, dist(x,z)) return math.degrees(radians) get_angle(): y_angle=get_y_rotation(mpu.accel.x, mpu.accel.y, mpu.accel.z) x_angle=get_x_rotation(mpu.accel.x, mpu.accel.y, mpu.accel.z) return x_angle,y_angle ### led matrix display machine.Pin(18,machine.Pin.OUT) rclk machine.Pin(19,machine.Pin.OUT) srclk machine.Pin(20,machine.Pin.OUT) hc595_in(dat): range(7,-1, -1): srclk.low()
  • Page 318 (if it isn’t in the center, the MPU6050 may not be level). When you deflect the breadboard, the dot will move in the direction you deflected. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 319: Play Pico With App

    FIVE PLAY PICO WITH APP This section will guide you through building a remote project using the Sunfounder Controller APP, which means you can use your phone/tablet to control your circuit. This play is based on micropython and it is recommended to do it after completing the micropython tutorial.
  • Page 320 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2. Upload the library. Reference to download the code and upload the library. But in 1.4 Download and Upload the Code this project, you need to upload ws.py from the euler-kit/esp8266/ path to the Raspberry Pi Pico.
  • Page 321 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3. Run 1.1_ws_test.py file. Double click the 1.1_ws_test.py file under the euler-kit/esp8266/ path, then click run cur- rent script button or just press F5 to run it. After running the program, you will see the IP address and the start prompt in the Shell.
  • Page 322 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4. Connect to ESP8266. Find my_esp8266 on the WLAN of the mobile phone (tablet), enter the password (12345678) and connect to it. The default used in 1.1_ws_test.py is mode. So after you connect, there will be a prompt telling...
  • Page 323 Internet access on this WLAN network, please choose to continue connecting. 5. Install Sunfounder Controller. Search for Sunfounder Controller in APP Store (or Google Play) and download it. 6. Connect to SunFounder Controller. Now open SunFounder Controller and click Disconnected in the upper right corner.
  • Page 324 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Because it is AP mode, it will connect automatically here. Note: If the connection has not been successful, please make sure the 1.1_ws_test.py file is running properly and connect your device’s Wi-Fi to my_esp8266.
  • Page 325 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) Connected from 192.168.4.3 7. Create a controller. Click the + button in the middle of the page, then the Create controller page will pop up. Enter the name of the controller, select Blank ->...
  • Page 326 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Click on area H and sclect the Slider widget. 8. Save and Run the controller. Click the Save/Edit button and the controller will be saved. At the same time it enters the working state, and the empty widget box is hidden.

  • Page 327: How Ws_Test.py Works

    3. If the connection has not been successful, or suddenly disconnect.please make sure the 1.1_ws_test.py file is running properly and your mobile device is connected to my_esp8266. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 328 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 from import WS_Server import json import time NAME my_esp8266 ## Client Mode # WIFI_MODE = "sta" # SSID = "YOUR SSID HERE" # PASSWORD = "YOUR PASSWORD HERE" (continues on next page)
  • Page 329 This code constitutes the basic framework of APP control. Here, you need to pay attention to the following two parts: 1. Setup websocket There are two connection mode between Sunfounder Controller and Pico: One is AP mode, the other is STA mode.
  • Page 330 2. Responding The specific operation code of Pico and Sunfounder Controller is written on the on_receive() func- tion. Usually, we need to write the codes for APP to control Pico on the front and the codes for APP to show Pico sensor data on the back.

  • Page 331: What Data Is Transferred Between App & Pico

    Finally, on_receive() will be assigned to ws.on_receive and then called by ws.loop. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 332 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) ## AP Mode WIFI_MODE "ap" SSID "" PASSWORD "12345678" WS_Server(name=NAME, mode=WIFI_MODE, ssid=SSID, password=PASSWORD) ws.start() on_receive(data): print(data) # output # input ws.on_receive on_receive main(): print("start") while True: ws.loop() main() You will see the data for each area in the Shell.
  • Page 333 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 We can also add other control widgets, and use the same method to view the values sent by these widgets to Pico. You can get the value of the corresponding widget by just using the label. As shown below, print the...
  • Page 334 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) ## AP Mode WIFI_MODE "ap" SSID "" PASSWORD "12345678" WS_Server(name=NAME, mode=WIFI_MODE, ssid=SSID, password=PASSWORD) ws.start() on_receive(data): print(data[ # output # input ws.on_receive on_receive main(): print("start") while True: ws.loop() main() >>>...
  • Page 335 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 from import WS_Server import json import time NAME my_esp8266 ## Client Mode # WIFI_MODE = "sta" # SSID = "YOUR SSID HERE" # PASSWORD = "YOUR PASSWORD HERE" ## AP Mode WIFI_MODE "ap"...
  • Page 336 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Show Widgets Chapter 5. Play Pico with APP...
  • Page 337 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 338: App Display Widgets

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 5.4 1.4 APP Display Widgets 1. Build the circuit. 2. Create a new controller and add the following widgets. Chapter 5. Play Pico with APP...
  • Page 339 Open and Run Code Directly. 4. Each time you rerun the code, you need to connect your device’s Wi-Fi to my_esp8266, then turn on SunFounder Controller and reconnect. 5. After clicking the Run/Stop button, you can try to press a button or rotate a potentiometer and see how the values of the widgets in area B and area C on the app change.

  • Page 340: App Actuator Widgets

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 341 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3. Each time you rerun the code, you need to connect your device’s Wi-Fi to my_esp8266, then turn on SunFounder Controller and reconnect. 4. After clicking the Run/Stop button, you can try to toggle these widgets and you can see the corresponding value changes in the Thonny shell.
  • Page 342 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Chapter 5. Play Pico with APP...

  • Page 343: Electronic Piano

    Ready to explore and create with us? Click [] and join today! 5.6 1.6 Electronic Piano In this project, we use the button widget on the SunFounder Controller as the piano keys and connect a passive buzzer to the Pico to simulate an electronic piano.
  • Page 344 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3. Add a Button widget to the G area, and click the Set button in the upper right corner to change the name. 4. Add a Slider widget to the H area and set its name, maximum, minimum and initial value.
  • Page 345 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 5. Add a Button widget in NOPSMQR area and change their names to note C ~ note B respectively. 6. After saving, the effect of the remote control is shown below.
  • Page 346 • For detailed tutorials, please refer to Open and Run Code Directly. 8. Each time you rerun the code, you need to connect your device’s Wi-Fi to my_esp8266, then turn on SunFounder Controller and reconnect. 9. Now, click the Run/Stop button in the upper right corner.
  • Page 347 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) #melody NOTE_C4 NOTE_G3 NOTE_A3 NOTE_B3 melody =[NOTE_C4,NOTE_G3,NOTE_G3,NOTE_A3,NOTE_G3,NOTE_B3,NOTE_C4] Define the frequency of CDEFGAB and a melody here. light_led(): global brightness brightness 65535 led.duty_u16(brightness) The light_led() function is used to let the LED display the maximum brightness(65535).
  • Page 348 • piano: When the buttons in NOPSMQR area are pressed separately, the passive buzzer will play different notes. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 349: Plant Monitor

    This is a smart watering system, it will detect the current temperature and humidity of the environment and show them on the SunFounder Controller. When you press the pump button on the APP, it will replenish water for the plants.
  • Page 350 Open and Run Code Directly. 4. Each time you rerun the code, you need to connect your device’s Wi-Fi to my_esp8266, then turn on SunFounder Controller and reconnect. 5. After clicking the Run/Stop button in the upper right corner. You will see the current temperature, humidity and water level value on the SunFounder controller.
  • Page 351 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 water for the plants. Note: • If the motor is still spinning after you click the Stop button, you need to reset the RUN pin on the Pico with a wire to GND at this time, and then unplug this wire to run the code again.
  • Page 352 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 (continued from previous page) motor1A.low() motor2A.low() ws.on_receive on_receive Here, the on_receive() function can be divided into 3 parts. • start pumping: When the button in area G is pressed, let the pump start working.
  • Page 353 3. Set it name to main.py, this way the Raspberry Pi Pico will run this code automatically. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 354 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Ready to explore and create with us? Click [] and join today! Chapter 5. Play Pico with APP...

  • Page 355: For Arduino User

    We recommend that you read the chapters in order. 1. Get Started Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 356 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Introduction the Arduino Software (IDE) Double-click the Arduino icon (arduino.exe) created by the installation process. Then the Arduino IDE will appear. Let’s check details of the software. Chapter 6. For Arduino User...
  • Page 357 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 1. Verify: Compile your code. Any syntax problem will be prompted with errors. 2. Upload: Upload the code to your board. When you click the button, the RX and TX LEDs on the board will flicker fast and won’t stop until the upload is done.

  • Page 358: Setup The Raspberry Pi Pico

    Tools -> Board / Port if any is incorrect. 15. The editing area of the IDE. You can write code here. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 359 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2. Search for Pico and click install button. 3. Once the installation is complete, you can select the board as Raspberry Pi Pico. 6.2. 1.2 Setup the Raspberry Pi Pico...
  • Page 360 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4. Now open a example - blink. 5. Click on the upload icon to run the code Chapter 6. For Arduino User...
  • Page 361 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6. When the compiling message shown in the figure below appears, press BOOTSEL immediately and connect Pico to the computer with a Micro USB cable. 6.2. 1.2 Setup the Raspberry Pi Pico...

  • Page 362: Download And Add Libraries

    7. After the Done Uploading appear, you will see the LED on the Pico blinking. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 363 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.3.1 Add libraries A library, gathering some function definitions and header files, usually contains two files: .h (header file, including function statement, Macro definition, constructor definition, etc.) and .cpp (execution file, with function implementa- tion, variable definition, and so on).
  • Page 364 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Step 3: When you see Library added to your libraries. Check “Include library” menu, it means you have added the library successfully. Please use the same method to add other libraries then.

  • Page 365: Quick Guide On Arduino

    Step 4: Paste all the libraries copied before to the folder. Then you can see them in libraries folder. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 366 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.4.1 Open & Run Code Directly 1. Open Code For example, 2.1_hello_led.ino. Double click on it. 2. Select the board as Raspberry Pi Pico. 3. Click on the upload icon to run the code...

  • Page 367: Hello, Led

    4. After the Done Uploading appear, you will see the LED blinking. 2. Output & input Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 368 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Let us follow the direction of the current to build the circuit! 1. Here we use the electrical signal from the GP15 pin of the Pico board to make the LED work, and the circuit starts from here.
  • Page 369 An interval between on and off is required to allow people to see the change, so we use a delay(1000) code to let the controller do nothing for 1000 ms. delay(1000); Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...

  • Page 370: Display The Level

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.6 2.2 - Display the Level The first project is simply to make the LED blink. In this project let’s use the LED Bar Graph, which is made up of 10 LEDs packaged into a plastic case, generally used to display power or volume levels.
  • Page 371 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The LED Bar Graph contains 10 LEDs, each of which is individually controllable. Here, the anode of each of the 10 LEDs is connected to GP6~GP15, and the cathode is connected to a 220ohm resistor, and then to GND.
  • Page 372 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 2.2_display_the_level.ino under the path of euler-kit/arduino/2. 2_display_the_level. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.

  • Page 373: Fading Led

    Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 374 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Each GPIO pin of Pico supports PWM, but it actually has a total of 16 independent PWM outputs (instead of 30), distributed between GP0 to GP15 on the left, and the PWM output of the right GPIO is equivalent to the left copy.
  • Page 375 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 2.3_fading_led.ino under the path of euler-kit/arduino/2.3_fading_led. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.

  • Page 376: Colorful Light

    5) { analogWrite(ledPin, value); delay(30); Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 377 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The PWM pins GP13, GP14 and GP15 control the Red, Green and Blue pins of the RGB LED respectively, and connect the common cathode pin to GND. This allows the RGB LED to display a specific color by superimposing light on these pins with different PWM values.
  • Page 378 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Here, we can choose our favorite color in drawing software (such as paint) and display it with RGB LED. Note: • You can open the file 2.4_colorful_light.ino under the path of euler-kit/arduino/2.
  • Page 379 0, 255); blue delay(1000); Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 380: Reading Button Value

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products.
  • Page 381 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: We can think of the four-legged button as an H-shaped button. Its left (right) two feet are connected, which means that after it straddles the central dividing line, it will connect the two half rows of the same row number together.
  • Page 382 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Now, when you press the button, the Serial Monitor will print “You pressed the button!”. How it works? To enable Serial Monitor, you need to start serial communication in setup() and set the datarate to 9600.
  • Page 383 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Serial.begin(115200); • Serial For button, we need to set their mode to INPUT in order to be able to get their values. pinMode(buttonPin, INPUT); Read the status of the buttonPin in loop() and assign it to the variable buttonState.

  • Page 384: Tilt It

    So just change this code to if (buttonState == LOW). Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 385 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 When you put it upright, GP14 will get high; after tilting it, GP14 will get low. The purpose of the 10K resistor is to keep the GP14 in a stable low state when the tilt switch is in a tilted state.

  • Page 386: Toggle Left And Right

    After the program runs, when you tilt the breadboard (tilt switch), “The switch works!” will appear in the shell. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 387 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 GP14 will get a different level, when you toggle the slide switch to the right or left. The purpose of the 10K resistor is to keep the GP14 low during toggling (not toggling to the far left and not toggling to the far right).

  • Page 388: Press Gently

    When the program is running, the serial monitor will show “ON” or “OFF” when you toggle the switch to the left or right. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 389 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 When the micro switch is not pressed, 1 (C) and 3 (NC) are connected together, when pressed 1 (C) and 2 (NO) are connected together. • Micro Switch Schematic By default, GP14 is low and when pressed, GP14 is high.
  • Page 390 After the program runs, when you toggle the slide switch to the right, “The switch works!” will appear in the Serial Monitor. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 391: Feel The Magnetism

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.13 2.9 - Feel the Magnetism The most common type of reed switch contains a pair of magnetizable, flexible, metal reeds whose end portions are separated by a small gap when the switch is open.
  • Page 392 When a magnet approaches, the circuit will be closed. Just like the button in the chapter. 2.5 - Reading Button Value Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...

  • Page 393: Detect Human Movement

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 6.14 2.10 - Detect Human Movement Passive infrared sensor (PIR sensor) is a common sensor that can measure infrared (IR) light emitted by objects in its field of view.
  • Page 394 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 2.10_detect_human_movement.ino under the path of euler-kit/arduino/2. 10_detect_human_movement. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.
  • Page 395 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 the 2 potentiometers facing you, turn both potentiometers counterclockwise to the end and insert the jumper cap on the pin with L and the middle pin. 1. Trigger Mode Let’s take a look at the pins with jumper cap at the corner. It allows PIR to enter Repeatable trigger...

  • Page 396: Turn The Knob

    0-3 meters. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 397 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Pico has three GPIO pins that can use analog input, GP26, GP27, GP28. That is, analog channels 0, 1, and 2. In addition, there is a fourth analog channel, which is connected to the built-in temperature sensor and will not be introduced here.
  • Page 398 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The potentiometer is an analog device and when you turn it in 2 different directions. Connect the middle pin of the potentiometer to the analog pin GP28. The Raspberry Pi Pico contains a multi-channel, 16-bit analog-to-digital converter.
  • Page 399 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 2.11_turn_the_knob.ino under the path of euler-kit/arduino/2. 11_turn_the_knob. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.
  • Page 400 • Now we can use this value to control the brightness of the LED. analogWrite(ledPin,brightness); Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 401: Feel The Light

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.16 2.12 - Feel the Light The photoresistor is a typical device for analog inputs and it is used in a very similar way to a potentiometer. Its resistance value depends on the intensity of the light, the stronger the irradiated light, the smaller its resistance value;...
  • Page 402 After the program runs, the Serial Monitor prints out the photoresistor values. You can shine a flashlight on it or cover it up with your hand to see how the value will change. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 403: Thermometer

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 6.17 2.13 - Thermometer A thermometer is a device that measures temperature or a temperature gradient (the degree of hotness or coldness of an object).
  • Page 404 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: • The thermistor is black and marked 103. • The color ring of the 10K ohm resistor is red, black, black, red and brown. Code Note: • You can open the file 2.13_thermometer.ino under the path of euler-kit/arduino/2.13_thermometer.
  • Page 405 This code refers to plugging Rt into the formula TK=1/(ln(RT/RN)/B+1/TN) to get Kelvin temperature. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 406: Feel The Water Level

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.18 2.14 - Feel the Water Level Water sensor is designed for water detection, which can be widely used in sensing rainfall, water level, and even liquid leakage. It measures the water level by having a series of exposed parallel wire traces to measure the size of the water drops/volume.
  • Page 407 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 2.14_feel_the_water_level.ino under the path of euler-kit/arduino/2. 14_feel_the_water_level. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.

  • Page 408: Two Kinds Of Transistors

    Don’t forget to select the Raspberry Pi Pico board and the correct port before clicking the Upload button. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 409 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Let’s use LED and button to understand how to use transistor! Transistor Way to connect NPN (S8050) transistor In this circuit, when the button is pressed, GP14 is high. By programming GP15 to output high, after a 1k current limiting resistor (to protect the transistor), the S8050 (NPN transistor) is allowed to conduct, thus allowing the LED to light up.
  • Page 410 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Way to connect PNP(S8550) transistor In this circuit, GP14 is low by the default and will change to high when the button is pressed. Chapter 6. For Arduino User...
  • Page 411 • The circuit that uses the S8550 (PNP transistor) will light up when it is released, which means it is receiving a low-level conduction circuit. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 412: Control Another Circuit

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks.
  • Page 413 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.20. 2.16 - Control Another Circuit...
  • Page 414 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 A diode (continuity diode) is used here to protect the circuit. The cathode is the end with the silver ribbon connected to the power supply, and the anode is connected to the transistor.
  • Page 415 By switching one end of the load circuit from pin 3 to pin 4, you will be able to get exactly the opposite operating state. 3. Sound & Display & Movement Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 416: Beep

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.21 3.1 - Beep The active buzzer is a typical digital output device that is as easy to use as lighting up an LED! • Buzzer Schematic When the GP15 output is high, after the 1K current limiting resistor (to protect the transistor), the S8050 (NPN tran- sistor) will conduct, so that the buzzer will sound.
  • Page 417 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The buzzer needs to use a transistor when working, here we use S8050 (NPN Transistor). Code Note: • You can open the file 3.1_beep.ino under the path of euler-kit/arduino/3.1_beep. • Or copy this code into Arduino IDE.

  • Page 418: Custom Tone

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 After the code runs, you will hear a beep every second. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 419 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 When the GP15 output is high, after the 1K current limiting resistor (to protect the transistor), the S8050 (NPN tran- sistor) will conduct, so that the buzzer will sound. The role of S8050 (NPN transistor) is to amplify the current and make the buzzer sound louder. In fact, you can also connect the buzzer directly to GP15, but you will find that the buzzer sound is smaller.
  • Page 420 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 3.2_custom_tone.ino under the path of euler-kit/arduino/3.2_custom_tone. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.

  • Page 421: Rgb Led Strip

    Don’t forget to select the Raspberry Pi Pico board and the correct port before clicking the Upload button. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 422 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Warning: One thing you need to pay attention to is current. Although the LED Strip with any number of LEDs can be used in Pico, the power of its VBUS pin is limited. Here, we will use eight LEDs, which are safe.
  • Page 423 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Let’s select some favorite colors and display them on the RGB LED Strip! How it works? Declare a Adafruit_NeoPixel type object, it is connected to PIXEL_PIN, there are PIXEL_COUNT RGB LEDs on the strip.

  • Page 424: Liquid Crystal Display

    RGB-compatible functions. • strip.gamma32() : Provides a “truer” color before assigning to each pixel. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 425 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Here we will use the I2C0 interface to control the LCD1602 and display text. Schematic Wiring 6.24. 3.4 - Liquid Crystal Display...
  • Page 426 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 3.4_liquid_crystal_display.ino under the path of euler-kit/arduino/3. 4_liquid_crystal_display. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.
  • Page 427 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 lcd_AddR: The address of the LCD defaults to 0x27. lcd_cols: The LCD1602 has 16 columns. lcd_rows: The LCD1602 has 2 rows. void init() Initialize the lcd. void backlight() Turn the (optional) backlight on.

  • Page 428: Small Fan

    LCD • Serial Read Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 429 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 In this circuit, you will see that the button is connected to the RUN pin. This is because the motor is operating with too much current, which may cause the Pico to disconnect from the computer, and the button needs to be pressed (for the Pico’s RUN pin to receive a low level) to reset.
  • Page 430 • This is because the motor is operating with too much current, which may cause the Pico to disconnect from the computer. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 431: Pumping

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Ready to explore and create with us? Click [] and join today! 6.26 3.6 - Pumping Small centrifugal pumps are suitable for projects with automatic plant watering. It can also be used to make tiny smart water features.
  • Page 432 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 In this circuit, you will see that the button is connected to the RUN pin. This is because the motor is operating with too much current, which may cause the Pico to disconnect from the computer, and the button needs to be pressed (for the Pico’s RUN pin to receive a low level) to reset.
  • Page 433 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 3.6_pumping.ino under the path of euler-kit/arduino/3.6_pumping. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.

  • Page 434: Swinging Servo

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 435 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Orange wire is signal and connected to GP15. • Red wire is VCC and connected to VBUS(5V). • Brown wire is GND and connected to GND. Code 6.27. 3.7 - Swinging Servo...
  • Page 436 Return 1 if the servo is currently attached. 4. Controller Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...

  • Page 437: Toggle The Joystick

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 6.28 4.1 - Toggle the Joystick...
  • Page 438 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 4.1_toggle_the_joyostick.ino under the path of euler-kit/arduino/4. 1_toggle_the_joyostick. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.

  • Page 439: 4X4 Keypad

    • The Z-axis is a digital value with a status of 1 or 0. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 440 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4 pull-down resistors are connected to each of the columns of the matrix keyboard, so that G6 ~ G9 get a stable low level when the keys are not pressed. The rows of the keyboard (G2 ~ G5) are programmed to go high; if one of G6 ~ G9 is read high, then we know which key is pressed.
  • Page 441 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 To make the wiring easier, in the above diagram, the column row of the matrix keyboard and the 10K resistors are inserted into the holes where G6 ~ G9 are located at the same time.

  • Page 442: Electrode Keyboard

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 443 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 4.3_electrode_keyboard.ino under the path of euler-kit/arduino/4. 3_electrode_keyboard. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.
  • Page 444 Serial.print(touchStates[i]); Serial.println(); 5. Microchip Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Page 445: Microchip - 74Hc595

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Ready to explore and create with us? Click [] and join today! 6.31 5.1 - Microchip - 74HC595 Integrated circuit (integrated circuit) is a kind of miniature electronic device or component, which is represented by the letter “IC”...
  • Page 446 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • When MR (pin10) is high level and OE (pin13) is low level, data is input in the rising edge of SHcp and goes to the memory register through the rising edge of SHcp.

  • Page 447: Number Display

    (Q0-Q7). For example, shiftout B00000001 will light up the LED controlled by Q0 and turn off the LED controlled by Q1~Q7. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 448 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 This means that it needs to be controlled by 8 digital signals at the same time to fully work and the 74HC595 can do this. • 7-segment Display Schematic Chapter 6. For Arduino User...
  • Page 449 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Table 1: Wiring 74HC595 LED Segment Display Code Note: • You can open the file 5.2_number_display.ino under the path of euler-kit/arduino/5. 2_number_display. • Or copy this code into Arduino IDE.
  • Page 450 Write these codes into shiftOut() to make the LED Segment Display display the corresponding numbers. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 451: Time Counter

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.33 5.3 - Time Counter 4-Digit 7-segment display consists of four 7- segment displays working together. The 4-digtal 7-segment display works independently. It uses the principle of human visual persistence to quickly display the characters of each 7-segment in a loop to form continuous strings.
  • Page 452 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 5.3_time_counter.ino under the path of euler-kit/arduino/5.3_time_counter. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.
  • Page 453 Finally, convert this time value and let the 4-digit 7-segment display to display it. • millis() Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! 6.33. 5.3 - Time Counter...

  • Page 454: 8X8 Pixel Graphics

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills.
  • Page 455 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The 8x8 dot matrix is controlled by two 74HC595 chips, one controlling the rows and one controlling the columns, while these two chips share G18~G20, which can greatly save the I/O ports of the Pico board.
  • Page 456 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Step 2: Connect pin 11 of the two 74HC595 together, and then to GP20; then pin 12 of the two chips, and to GP19; next, pin 14 of the 74HC595 on the left side to GP18 and pin 9 to pin 14 of the second 74HC595.
  • Page 457 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Step 4: Now connect the ROWs of the LED dot matrix. The 74HC595 on the left controls ROW of the LED dot matrix. See the table below for the mapping. We can see, Q0-Q7 of the 74HC595 on the left are mapped with pin 9, 14, 8, 12, 1, 7, 2, and 5 respectively.
  • Page 458 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 5.4_8x8_pixel_graphics.ino under the path of euler-kit/arduino/5. 4_8x8_pixel_graphics. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.
  • Page 459 {0xFF,0xFF,0xF7,0xEB,0xDF,0xBF,0xFF,0xFF}; Or, you can try drawing your own graphics. 6. Advanced Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...

  • Page 460: Measuring Distance

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 6.35 6.1 - Measuring Distance The ultrasonic sensor module works on the principle of sonar and radar systems for determining the distance to an object. • Ultrasonic Module Schematic Wiring Chapter 6. For Arduino User...
  • Page 461 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 6.1_ultrasonic.ino under the path of euler-kit/arduino/6.1_ultrasonic. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.

  • Page 462: Temperature - Humidity

    Note that the ultrasonic sensor will pause the program when it is working, which may cause some lagging when writing complex projects. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 463 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 A basic digital temperature and humidity sensor, the DHT11, is provided in this kit. It uses a capacitive humidity sensor and thermistor to measure the surrounding air and outputs a digital signal on the data pins (no analog input pins are required).
  • Page 464 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Wiring Chapter 6. For Arduino User...
  • Page 465 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 6.2_dht11.ino under the path of euler-kit/arduino/6.2_dht11. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.

  • Page 466: 6-Axis Motion Tracking

    Finally, the DHT11 sampling rate is 1HZ, a delay(1500) is needed in the loop. delay(1500); Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 467 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Gyroscopes are used to measure orientation and angular velocity of a device or maintenance. Applications of gyro- scopes include anti-rollover and airbag systems for automobiles, motion sensing systems for smart devices, attitude stabilization systems for drones, and more.
  • Page 468 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 6.3_6axis_motion_tracking.ino under the path of euler-kit/arduino/6. 3_6axis_motion_tracking. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.
  • Page 469 Serial.print(g.gyro.y); Serial.print(", Z: "); Serial.print(g.gyro.z); Serial.println(" rad/s"); Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. 6.37. 6.3 - 6-axis Motion Tracking...

  • Page 470: Ir Remote Control

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks.
  • Page 471 Once the program is running, when you press the remote control, the Serial Monitor will print out the key you pressed. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 472: Radio Frequency Identification

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks.
  • Page 473 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can open the file 6.5_rfid_write.ino under the path of euler-kit/arduino/6.5_rfid_write. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.
  • Page 474 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: • You can open the file 6.5_rfid_write.ino under the path of euler-kit/arduino/6.5_rfid_write. • Or copy this code into Arduino IDE. • For detailed tutorials, please refer to Open & Run Code Directly.
  • Page 475 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Serial.readBytesUntil Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 476 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Chapter 6. For Arduino User...

  • Page 477: For Piper Make

    The underlying principle is to use CircuitPython with auxiliary libraries. 1. Get Started Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...
  • Page 478 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: If you see a different pop-up window, your browser version is not supported, please update your browser and try again. Find the SETUP MY PICO button, click it, and follow the prompts to configure it.
  • Page 479 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 In this step, you need to make sure that your Pico is unplugged from your computer, as it needs to be plugged in in a specific way in the next step. Make sure your cable can handle power and data, as many micro USB cables only have power.
  • Page 480 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Now Piper Make will load the firmware to your Pico, again you need to allow save changes to the hard drive where the Pico is located. When this prompt appears, it means your Pico is set up and you can start using it.

  • Page 481: Quick Guide On Piper Make

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 482 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Then open the new project just created. Now go to the Piper Make programming page. • START: Used to run the code, if it’s gray, it’s not connected to Pico at this time.
  • Page 483 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Tools Area: You can click DIGITAL VIEW to see the pin distribution of Pico; you can view the print infor- mation in CONSOLE; you can read data from DATA, and you can click Python to view the Python source code.
  • Page 484 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 The Raspberry Pi Pico’s onboard LED is at pin25, so we use the [turn pin () ON/OFF] block on the Chip palette to control it. Chapter 7. For Piper Make...
  • Page 485 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 7.2.2 2. Connect to Pico Now click on the CONNECT button to connect to pico, after clicking on it a new popup will appear. Select the recognized CircuitPython CDC control (COMXX) port, then click on Connect.
  • Page 486 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 When the connection is successful, the green CONNECT in the bottom left corner will change to a red DISCON- NECT. Chapter 7. For Piper Make...
  • Page 487 Then turn off pin25 every second in the cycle, and click START on the upper left again, so that you can see the onboard LED lights flashing. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! 7.2. 1.2 Quick Guide on Piper Make...

  • Page 488: How To Save Or Import Code

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills.
  • Page 489 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 7.3.2 Import the Code In Piper Make’s home page, click Import Project. Select the .png file in the path euler-kit\piper and click Import. Note that you need to download the SunFounder Euler Kit package first.
  • Page 490 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Now you can see the file you imported. 2. Projects Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? •...

  • Page 491: Blink Led

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 7.4 2.1 Blink LED For this project, we intend to make the extended LED light blink. To use extended electronic components, a solderless breadboard will be the most powerful partner for novice users.
  • Page 492 • [turn pin () ON/OFF]: Indicates that a certain pin is placed in a high level (ON) or a low level (OFF). • [wait () seconds]: Set the execution interval between blocks. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 493: Button

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 7.5 2.2 Button In this project, we will learn how to turn on or off the LED by using a button.
  • Page 494 [do] block, otherwise execute the blocks inside [else]. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 495: Service Bell

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions. Ready to explore and create with us? Click [] and join today! 7.6 2.3 Service Bell...
  • Page 496 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • By default, pins 1 and 3 of the Micro Switch are connected together and GP14 is low. When the Micro Switch is pressed, GP14 is high. • GP15 outputs high to make the buzzer sound.
  • Page 497 Note: This project code is exactly the same as the previous project Button. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 498: Rainbow Light

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 7.7 2.4 Rainbow Light In this project, we will make the RGB LEDs display a rainbow of colors. RGB LED is equivalent to encapsulating Red LED, Green LED, Blue LED under one lamp cap, and the three LEDs share one cathode pin.
  • Page 499 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • When using the same power supply intensity, the Red LED will be brighter than the other two, and a slightly larger resistor(330) needs to be used to reduce its brightness.
  • Page 500 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 After connecting Pico, click the Start button and the code starts to run. Pressing these buttons individually will emit a single color of light, but if two of the buttons are pressed at the same time, or all 3 buttons are pressed at the same time, the RGB LEDs will emit a variety of different colors, up to a maximum of 7.

  • Page 501: Drum Kit

    When the buttons are pressed, the levels of the corresponding pins are pulled high, causing the RGB LED to display different colors. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 502 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • When the slide switch is toggled to the right, GP12 is high; when toggled to the left, GP12 is low. • Each of the three buttons is connected to a pull-down resistor, GP13~GP15 are low by default; when the button is pressed, GP13~GP15 are high.
  • Page 503 Note: If you are using a computer, you will need to plug in headphones or audio to your computer to hear the sound emitted. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 504: Smart Water Tank

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Exclusive Previews: Get early access to new product announcements and sneak peeks. • Special Discounts: Enjoy exclusive discounts on our newest products. • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions.
  • Page 505 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • S of water level sensor is connected to GP26(A0), + to VBUS, - pin to GND. • The orange wire (signal) of the servo is connected to GP15, the red wire (power) is connected to VBUS, and the brown wire (ground) is connected to GND.
  • Page 506 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 After connecting Pico, click the Start button and the code starts to run. When the water level is lower than 1/3 of the water level sensor, the servo rotates to 180 degrees to simulate the inlet opening; when the water level is higher than 1/3 of the water level sensor, the servo rotates to 0 degrees to imitate the inlet closing.
  • Page 507 • [servo pin () set angle to ()]: Set the angle of servo pin to, the range is 0 ~ 180°. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 508: Swing Servo

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 7.10 2.7 Swing Servo In this project, we use a servo and a potentiometer to simulate a steering wheel. Rotating the potentiometer will drive the servo to turn together. • Breadboard •...
  • Page 509 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • You can refer to the image below to write code by dragging and dropping. • Import 2.7_swing_servo.png from the path of euler-kit\piper. For detailed tutorials, please refer to Import the Code.

  • Page 510: Light Intensity Display

    Note: The voltage of A0~A2 takes the range of 0~3.3V, even if your power supply is connected to VBUS (5V). Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 511 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • The LED Bar Graph consists of 10 LEDs, with the side with the label as the anode and the other side as the cathode. • The anode of the LED Bar Graph are connected to GP6~GP15. The cathode are connected to a 220 ohm resistor and then to GND.
  • Page 512 • [map value () from () to ()]: map a value from one range to another. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 513: Lucky Cat

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Ready to explore and create with us? Click [] and join today! 7.12 2.9 Lucky Cat In this project, we use pir and servo to make a lucky cat. The PIR Module is used to detect the visitors and servo is used to imitate the beckoning motion of the lucky cat.
  • Page 514 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Import 2.9_lucky_cat.png from the path of euler-kit\piper. For detailed tutorials, please refer to Import Code. • After connecting Pico, click the Start button and the code starts to run. • When the PIR module detects a customer arrival, the servo oscillates back and forth five times and then stops.
  • Page 515 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Set the rotation speed of pin15 (servo) to 15%. If GP14 is low, set the variable [prestate] to 0. When the variable [prestate] is 0 and GP14 is high (human detected), set the variable [prestate] to 1.

  • Page 516: Flowing Leds

    • [repeat () times do]: Loop through the code inside the do block a finite number of times. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.
  • Page 517 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Code Note: • You can refer to the image below to write code by dragging and dropping. • Import 2.10_flowing_led.png from the path of euler-kit\piper. For detailed tutorials, please refer to Import the Code.
  • Page 518 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Chapter 7. For Piper Make...
  • Page 519 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 After connecting Pico, click the Start button and the code starts to run. When the tilt switch is placed vertically, it makes the LEDs on the WS2812 RGB LED Strip light up one by one in green, and when the tilt switch is placed horizontally, the LEDs light up one by one in the opposite direction in green.
  • Page 520 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Step 3: Set the initial value of variable i to 1 (the LED near the wires), then in [repeat forever] block, use [() mod ()] to set the value of i from 0 to 7. e.g. 1 mod 8 = 1. . . 8 mod 8 =0, 9 mod 8 =1, etc.
  • Page 521 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Step 4: Set all neopixels to black to make all LEDs go off, then use [updates neopixels] to make this effect update to the WS2812 RGB LED Strip. 7.13. 2.10 Flowing LEDs...
  • Page 522 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • [set all neopixels to ()]: Use to set a color for all LEDs, there are 13*9 colors, the top right color is black to make LEDs to go off. • [updates neopixels]: Update the effect to the WS2812 RGB LED Strip.
  • Page 523 • [change () by ()]: Used to increase (positive) or decrease (negative) the value of a variable by a specific step. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 524: Reversing System

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 7.14 2.11 Reversing System For this project we used an ultrasonic module and an active buzzer to create a reversing alarm system. The ultrasonic module is used to detect the distance, and the buzzer emits different frequencies of alarm sounds depending on the distance.
  • Page 525 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • You can refer to the image below to write code by dragging and dropping. • Import 2.11_reversing_system.png from the path of euler-kit\piper. For detailed tutorials, please refer Import the Code.
  • Page 526 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 How it Works? Read the distance (in cm) of the ultrasonic detection, and store it in the variable [distance]. When distance is less than or equal to 5, set the variable intervals to 0.1s. The variable [intervals] is the interval between buzzer sounds.
  • Page 527 When distance is greater than 10, set the [intervals] time to 1s. Finally, make the buzzer sound every [intervals] seconds. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 528: Smart Fan

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 7.15 2.12 Smart Fan Here we make a temperature controlled smart fan with thermistor, L293D, motor, and power module. The fan rotates automatically when the set temperature is reached. • Breadboard •...
  • Page 529 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • After connecting Pico, click the Start button and the code starts to run. • Click CONSLE, you will see the current temperature in Celsius. • The fan starts spinning when it is above 25 degrees, and stops spinning when it is below 25 degrees.
  • Page 530 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 How it Works? The voltage of A0 (GP26) is read and assigned to the variable [Vr]. These calculations convert the thermistor values into centigrade degree. Note: Here is the relation between the resistance and temperature: RT =RN expB(1/TK –...
  • Page 531 When the temperature is lower than 25 degrees Celsius, set GP14 and GP15 both low to stop the motor. Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

  • Page 532: Reaction Game

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Expert Support: Solve post-sale issues and technical challenges with help from our community and team. • Learn & Share: Exchange tips and tutorials to enhance your skills. • Exclusive Previews: Get early access to new product announcements and sneak peeks.
  • Page 533 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • Their indicators are connected to GP15 and GP13, and output high to light them up. • Define a referee button connected to GP10, when the button is pressed, GP10 goes low.
  • Page 534 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Chapter 7. For Piper Make...
  • Page 535 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • After connecting Pico, click the Start button and the code starts to run. • Press the referee button and the buzzer starts to sound (continuously), representing the start of the game.
  • Page 536 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 When flag equals to 1 for game start, then read the value of GP14 (player1); if player1 button is pressed, store the number of presses in variable [count1], and make the indicator of GP15 light up.
  • Page 537 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Read the number of presses of GP12(player2) in the same way. 7.16. 2.13 Reaction Game...
  • Page 538 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Print the number of presses for player1 and player2 respectively. When the referee button is pressed again, the buzzer stops working and the game ends. Chapter 7. For Piper Make...
  • Page 539 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. Why Join? • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.
  • Page 540 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Chapter 7. For Piper Make...

  • Page 541: Faq

    CHAPTER EIGHT 8.1 Arduino 1. Code upload failed in Arduino IDE? • Check that your Pico is correctly recognised by the Arduino IDE, the port should be COMXX (Rasp- berry Pi Pico), for instructions please refer to 1.2 Setup the Raspberry Pi Pico.

  • Page 542: Piper Make

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 • If you used it on Thonny first and now you want to use it on Arduino IDE, you need to 1.2 Setup the Raspberry Pi Pico. 6. If your computer is win7 and pico cannot be detected.

  • Page 543: How To Re-Burn The Firmware For Esp8266 Module

    SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 8.4 How to re-burn the firmware for ESP8266 module? 1. Download firmwre and burn-in tool • ESP8266 Firmware After unzipping, you will see 3 files. • esp8266-uart-wsserver-v1.0.2.bin: The firmware to burn to the ESP8266 module.
  • Page 544 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3. Go to the Downloads folder and find the file you just downloaded, then drag picoprobe.uf2 to the RPI-RP2 storage drive. 4. The Pico will reboot and disappear from the File Manager, then Pico’s USB will be recognized as a serial port and you can see it in the Device Manager.
  • Page 545 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 4. Burn the firmware • Follow the steps below to burn the firmware if you are using Windows. 1. Double click install.bat to start the firmware burning. If you see the following prompt, the firmware has been installed successfully.
  • Page 546 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: If the burn-in fails, please check the following points. – If it does not work the first time, close the window and open install.bat again. – Reset the ESP8266 module by inserting the RST to GND and then unplugging it.
  • Page 547 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 Note: If the burn-in fails, please check the following points. – Reset the ESP8266 module by inserting the RST to GND and then unplugging it. – Check if the wiring is correct.
  • Page 548 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 2. As Thonny doesn’t come with a serial port tool, you’ll need to use the Arduino IDE’s serial monitor or another serial port tool to test it. The Arduino IDE 2.0 will be used here, open it and select the port. Note that your port is different from mine.
  • Page 549 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 3. Click on the Serial Monitor icon to open it and select the display mode (New line) and baud rate (115200 baud). 4. Type SET+RESET, and press Ctrl+Enter to send this command. Once the firmware has been burned success- fully, you will see a string of characters + OK.
  • Page 550 SunFounder Euler Kit for Raspberry Pi Pico, Release 1.0 5. At this point you can go ahead and finish the project - 1.1 First-time Use the APP. Note: • The Raspberry Pi Pico here uses the serial firmware, you need to 1.3 Install MicroPython...

  • Page 551: Copyright Notice

    NINE COPYRIGHT NOTICE All contents including but not limited to texts, images, and code in this manual are owned by the SunFounder Company. You should only use it for personal study,investigation, enjoyment, or other non-commercial or nonprofit purposes, under therelated regulations and copyrights laws, without infringing the legal rights of the author and relevant right holders.

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