Alpakka (Input Labs)
Gamepads and adapters. Gyro-aiming gamepad with open firmware, a KiCad PCB and a 3D-printable case, designed so a soldering iron is the only tool you need. Input Labs also sells DIY kits.
Files: Open source and kits
Building electronics carries some risk: follow the project's own wiring and safety guide. Like every entry on FanGamesDB, this page links only to the maker's page and hosts no files. All fan-made hardware