I purchased this 8 x 5 LED Matrix Display, CSM-58261EG-21, at a Hamfest several years ago (2017) and finally had the time to hook it up and make it work. The display has two LED's per "pixel" Red and ...

This is a tiny and clearly arranged Arduino library for the basic RGB LED functions, to easily drive an RGB color LED (common anode/common cathode) and mix the colors. It uses the principle of ...