Cemuhook DSU server for the 2026 Steam Controller's gyro and accelerometer. Runs on 127.0.0.1:26760. Steam Input handles buttons; this handles motion.
Download sc2dsu.exe from Releases and run it. Plug in the Puck, point your emulator at 127.0.0.1:26760, done. Only tested with Eden over the Proteus Puck.
If an axis is wrong, swap the source or flip invert in the settings window. Saved live; takes effect on the next IMU sample. Config lives at %APPDATA%\sc2dsu\config.toml.
Run modes: sc2dsu (GUI + server), sc2dsu --tray (start hidden), sc2dsu --headless (server only, log to stderr), sc2dsu --probe (enumerate Valve HIDs and dump 3 s of decoded IMU).
Only the Proteus Puck (0x1304) was actually plugged in during development. Wired (0x1302), BLE (0x1303), and Nereid Puck (0x1305) are listed in SDL's Triton driver as the same family, so the code path treats them identically but I have no idea if any of that actually works on real hardware. Reports welcome.
Build with cargo build --release. CI runs cargo fmt --check, cargo clippy -- -D warnings, cargo build --release --locked on every push.
HID protocol from SDL3 SDL_hidapi_steam_triton.c and steam/ headers. DSU protocol from v1993/gcemuhook. MIT.
Emulators that support the Controller Nativly like RPCS3 need the Steam Overlay disabled on their Shortcut to stop Steam Input from Injecting and Hiding the Controller. SDL Native Programms also do not need this Tool to access Gyro. So. No. You dont need this for RPCS3
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