Simple project (2 minutes) with an M5atom Matrix and an arduino module k-018 (https://arduinomodules.info/ky-018-photoresistor-module/). Just plug the module in the M5atom (the S pin of the module must be plugged in the g25, no way to plug it reverse) and upload the code, the M5atom matrix will be brighter as the light decreases. 5 led brightness and 5 different colors (changing color by clicking the screen)
I have encountered several problems with the leds: The screen has strange behaviour with some colors (especially with some predefined colors) and is white when the brightness is at 5. don't know why
