RGB Etch-A-Sketch

Code for an Arduino-based simple Etch-A-Sketch-style tracing device using a 32x32 RGB LED matrix panel (for Swarthmore College ENGR 015 Final Project)

Authors: Thomas Makin, Katelynn Swaim

Components

• 32x32 RGB LED matrix panel
• Adafruit Metro M0
• Adafruit RGB Matrix Shield
• 2 rotary encoders (for x- and y-axis movement)
• Slide potentiometer (for color adjustment)
• 5x 10kΩ resistors

Notes

• Final code is in the etchASketch sketch
• debug_etchASketch sketch disables one encoder to use pins 0 and 1 for UART debug serial

Credits

Rotary Encoder Demo (source of rotaryEncoder sketch) © DroneBot Workshop 2019

RGBmatrixPanel library and testshapes_32x32 sketch © Adafruit 2021