Arduino open-source hardware
https://github.com/Beat707/Wusik-SQ200-Remote
https://easyeda.com/williamkwusik/wusik ... ote-v1-0-0
Currently I have only done the initial design, now I will work on the PCB layout. The idea is to make two layouts, one with just the PCB headers and another with the buttons and LEDs attached to a larger PCB.
Cheers, WilliamK