Enthusiast reverse-engineers Steam Controller 2 puck, creates DIY 'OpenPuck' that works without Steam Input — custom firmware can emulate Nintendo, PlayStation, and Xbox controllers
AI disclosure
Summary
OpenPuck is custom, open-source firmware that can turn a microcontroller into a DIY Steam Controller puck in minutes. You can then use your Steam Controller as a native Xbox, PlayStation or Switch controller without even having Steam open in the background.