Frequency Meter - Uctronics Ultimate Starter Kit for Arduino Manual

Overview
In this lesson, you will learn to build a simple frequency meter with UNO R3 or MEGA 2560.
The frequency of square wave is generated by 555 timer, and then it will be sent to the Arduino
GPIO pin, the result to serial monitor through USB port.
Components Required
Name
UNO R3 or MEGA 2560
NE555 Timer
10KΩ Resistor
DuPont Wire
Component Introduction
The NE555 Timer is an integrated circuit (chip) used in a variety of
applications like timer, pulse generation, and oscillator.
Connection Schematic
UNO R3/
Mega 2560
67
Lesson 28 Frequency Meter
/RESET SCL
3V3 SDA
5V AREF
GND2 GND
GND1 D13
VIN D12
D11
A0 D10
A1 D9
A2 D8
A3
A4 D7
A5 D6
D5
D4
D3
D2
D1
D0
ARDUINO-NOHOLE
Qty
1 10KΩ Potentiometer
1
1
13
Potenti
ometer
104
Name
104 Capacitor
Breadboard
GND VCC
TRIG DISCH
OUT THRES
RESET CONT
104
NE555
Qty
1
2
1
10K