nearing the end of my first project. I am making sure everything is in working order before I paint and reassemble. I chose to go with LED buttons and a usb control board. I have a pi3 so the usb board hookup is great. Those controller pins look intimidating. I need help programming my led buttons and joystick however. I used an icade cabinet as my base for fabrication so I have 8 buttons and a joystick. I'm stuck and I'm not sure what to do next. Do I use the retropie main to program? Or is it in game programming? Or is it like programming any other controller in the main emulation station menu? Any help is appreciated. Thanks in advance.