Trackside
A desk mixer for per-app volume
A USB desk mixer that gives Windows programs physical faders. Four 60 mm faders, three keys and a 2.79" bar display sit beside the keyboard. Each fader controls one program (Discord, Spotify, a game, whatever's in front) or the master volume, and one key press switches the faders to another bank of programs.
Custom PCB, firmware and a desktop app, with about 3,800 automated tests behind them. The fader caps are dice, so the pips tell you which channel is which.
Hardware
- Custom PCB designed in KiCad, assembled by JLCPCB
- ESP32-S3
- 16-bit ADC for the faders
- Low-profile hot-swap keys
- Addressable RGB lighting