It's an Arduino Mega2560. I'm doing an openTX project. The schematic calls for switches (or momentary buttons). I understand - yes maybe POTs better, except changing this is more involved.
If I want to change it to use POTs instead, I have to sort through the 10,000k lines of code from 30+ programmers, after figuring out which of the 8 other software packages the git-hub readme explains that I must install, just to compile the project myself. To get my stuff done some time this year, I will just be using their pre-compiled .hex files as software and deal with my customized modifications when time permits.