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

A work in progress, but a very intriguing one.
Tom's Hardware on MSN

Enthusiast reverse-engineers Steam Controller, creates DIY OpenPuck that works without Steam Input

OpenPuck is custom, open-source firmware that can turn a microcontroller into a DIY Steam Controller puck in minutes. You can ...
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 ...
PCGamesN

This DIY Steam Deck controller splits in two, inspired by the Nintendo Switch

I'm a sucker for a DIY project, so this homemade Steam Deck controller is right up my alley. Using some spare parts, a 3D printer, and plenty of patient trial and error, a hardware modder has put ...
Geeky Gadgets

Is the Steam Controller Actually Good? What Reviewers Say

The Steam Controller has carved out a unique space in gaming hardware, blending the precision of keyboard-and-mouse setups with the comfort of a traditional controller. In this overview, NerdNest ...