You can use a GameCube controller on your PC - here's how

If you've got a GameCube controller that you want to use with your favorite PC games, it's possible, but may require some ...

Enthusiast project turns the Steam Controller into a cross-platform gamepad

Valve's new Steam Controller doesn't natively support XInput, even though XInput remains the standard for many PC games and ...

The OpenPuck project allows the Steam Controller to emulate console controls, among other uses

A work in progress, but a very intriguing one.
Hackaday

DIY Steam Controller Puck Offers Xbox, Switch, PlayStation Emulation Modes

Valve recently released a new version of the Steam Controller, which features a wired USB puck that serves both as charger ...