Circuitpython Internal Rgb Led; Create The Led - Adafruit Feather M4 Express Manual

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CircuitPython Internal RGB LED

Every board has a built in RGB LED. You can use CircuitPython to control the color and brightness of this LED. There

are two different types of internal RGB LEDs:

section covers both and explains which boards have which LED.

The first example will show you how to change the color and brightness of the internal RGB LED.

Copy and paste the code into code.py using your favorite editor, and save the file.

import time

import board

# For Trinket M0, Gemma M0, ItsyBitsy M0 Express, and ItsyBitsy M4 Express

import adafruit_dotstar

led = adafruit_dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1)

# For Feather M0 Express, Metro M0 Express, Metro M4 Express, and Circuit Playground Express

# import neopixel

# led = neopixel.NeoPixel(board.NEOPIXEL, 1)

led.brightness = 0.3

while True:

led[0] = (255, 0, 0)

time.sleep(0.5)

led[0] = (0, 255, 0)

time.sleep(0.5)

led[0] = (0, 0, 255)

time.sleep(0.5)

Create the LED

First, we create the LED object and attach it to the correct pin or pins. In the case of a NeoPixel, there is only one pin

necessary, and we have called it

necessary, and so we use the pin names

single onboard LED, the last thing we do is tell it that there's only

DotStar

(https://adafru.it/kDg)

for easier use. In the case of a DotStar, however, there are two pins

NEOPIXEL

APA102_MOSI

https://learn.adafruit.com/adafruit-feather-m4-express-atsamd51

and

NeoPixel

and

to get it set up. Since we're using the

APA102_SCK

LED!

(https://adafru.it/Bej). This

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Circuitpython Internal Rgb Led; Create The Led - Adafruit Feather M4 Express Manual