This is simple code I modified to make a DIY macro keyboard for CAD shortcuts! Orginal code is here, i just modified https://www.makeuseof.com/tag/make-custom-shortcut-buttons-arduino/
Yukonus/Arduino-Macro-Keyboard
code I modified to make a DIY macro keyboard for CAD shortcuts! Orginal code is here, i just modified https://www.makeuseof.com/tag/make-custom-shortcut-buttons-arduino/