Instructions

PROJECT 3. COLOR MIXER
You will need:
• micro:bit
• MonkMakes RGB LED for micro:bit
• Program: P3 Color Mixer
This project uses the same connections as Project
2, plus one extra wire from Pin 2 of the micro:bit to
Blue on the RGB LED. So, if you have just done
Project 2, you just need to add the extra wire.
This extra wire is needed because Project 2 only
used the red and green channels of the RGB LED,
whereas this project uses the red, green and blue.
Flash the program P3 Color Mixer onto your
micro:bit from the link below. When you tilt the
micro:bit, the color of the RGB LED will change.
https://makecode.microbit.org/_WyXhYDXe7h6r
How it Works
In this project, RGB (Red, Green, Blue)
LED is used to display different colors by
varying the brightness of the red, green
and blue channels of the LED. It does
this using the three pins of the micro:bit
as PWM (Pulse Width Modulation)
outputs.
It works by varying the duration of a
series of pulses sent the red green and
blue channels.
If the pulse is only high for a very short
time (say 5% of the time) then only a
small amount of power is delivered to that
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