Example Code for micro:bit-RGB LEDs

Hardware Preparation

• Math & Automatic expansion board for micro:bit, Quantity: 1
• micro:bit, Quantity: 1

Software Preparation

Makecode graphical programming, Mind+ platform.
Makecode Library Address.
About how to install a software library?

Wiring Diagram

Connect the RGB LED to p15 of micro:bit.

Other Preparation Work

Install the Makecode library from https://github.com/DFRobot/pxt-Math-Automatic.
About how to install a software library?

Sample Code

1. Set the brightness of RGB (0~255)
   
2. Set the LED No. 0 to blue
   
3. Set the LED 4 to 8 to yellow
   
4. Set LED 3 to purple
   
5. Light up RGB Matrix Pixel
   
   
6. RGB LED show Rainbow
   

Result

1. the brightness of the whole LEDs is 138
2. the LED 0 lights up in blue
3. the LED 4 to 8 light up in yellow
4. the LED 3 lights up in purple
5. Light up the LED in form of a matrix in purple. X=1, Y=2. (The original point of the matrix is the upper-left corner.)
6. the LED 0 to 15 show rainbow color.