perigosoDec 18, 2024
cnlohr
I couldn't help but to play with these 21¢ LCDs on the 10¢ #riscv #ch32v003. Adding touch, LCD outputs USB to a processor that has none of them, and without a USB connector! Join me on this little side quest. https://www.youtube.com/watch?v=KNDRUWlsu0k
Bit Banging LCD + Touch + USB on the ch32v003

YouTube
Dec 17, 2024 at 9:08pmWeb
Show threaddoragasuDec 18, 2024
@cnlohr So fun project! I never would have thought about using the LCD as a touch input, cool!
Show threadOlimexDec 18, 2024
@cnlohr keep doing this magic !
Show threadgkrnoursDec 18, 2024

@cnlohr flyingtiger have these magic drawing boards for under 10 bucks that seems to be one A4 LCD panel + touch sensor and a single button to erase the whole screen. They are powered from a single CR2032 battery. I didn't take mine apart so no idea about the electronic

https://flyingtiger.com/en-fr/products/magic-drawing-board-3057029

Magic drawing board