deej is a fascinating open-source hardware volume mixer for Windows and Linux PCs that allows users to control app volumes using real-life sliders like a DJ. The desktop client is lightweight, written in Go, and consumes minimal memory. Users can bind apps to different sliders, control the master channel, bind system sounds on Windows, and even control the microphone’s input level. The hardware setup, based on Arduino, is simple and inexpensive, with the possibility to build deej on cardboard, a shoebox, or a breadboard if a 3D printer is unavailable. Join the deej Discord server for assistance, and explore the FAQ and community-built versions.
https://github.com/omriharel/deej