Super Gamepad Zero: RetroPie in a Super Nintendo Controller - Howchoo
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 4 2gb 4gb Ram Game Kit With Usb Gamepad Joystick Acrylic Case Sd Card Power Supply For Raspberry Pi 4 Model B Pi 4b - Demo Board - AliExpress
Adding Controls: Hardware | Retro Gaming with Raspberry Pi | Adafruit Learning System