He’s converted a mouse into a tuning dial. The scroll wheel on a mouse is nothing more than a rotary encoder, and can easily be used as a sort of tuning knob. Replacing it with a better encoder ...

Additional functionality is implemented using two rotary encoders and the Teensy encoder library. The first knob functions as a volume control with the push-button working as a mute button.

These interfaces add a physical ‘clicky’ knob to the front of a display without traditional rotary encoder electronics ... natively support the detection and reporting of KoD encoders, with ...