This project contains code for an Adafruit RP2040 ThinkInk controlling a 7.5" ePaper display to act as a "magic" Etch-a-Sketch for a community theater performance of Elf Jr.
The main issue with the standard Adafruit_EPD library was getting the display to perform partial updates, and to do so quickly and without the "flashing" (inverted colors) effect that the default EPD refresh uses.