Enthusiast project turns the Steam Controller into a cross-platform gamepad
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First look: An open-source firmware project called OpenPuck lets Valve's Steam Controller mimic other gamepads without requiring Steam to run in the background. The project was built by an enthusiast known as Safijari and runs on a microcontroller that translates inputs on the device itself. The firmware reads the controller's raw input and, in real time, remaps it to Xbox, PlayStation, or Nintendo-style layouts.
Valve's new Steam Controller doesn't natively support XInput, even though XInput remains the standard for many PC games and devices. Typically, Steam has to stay open in the background to bridge that gap. With OpenPuck, the microcontroller handles the translation itself, so Steam doesn't have to.
Setting it up is straightforward if you're comfortable with basic microcontroller work. The firmware runs on boards such as the Pro Micro nRF52840,...
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