gpio - Trying to use PiGRRL 2.0 Custom Gamepad PCB but there's no documentation on how to program the buttons - Raspberry Pi Stack Exchange
Raspberry Pi 2 PiGRRL Pack 2.0 and custo | ALLPCB
PiGRRL 2.0 Kit Pack - Build your own Pi Game Emulator! [CASE + RASPBERRY PI NOT INCLUDED] : ID 3014 : $59.95 : Adafruit Industries, Unique & fun DIY electronics and kits