Taking inspiration from “The Contest Knob” which became the “FlexControl”, I started creating “MY KNOB” 🙂 It talks via CAT with PowerSDR and it will offer a tuning wheel and some buttons. The 6cm diameter wheel rotates on dual ball bearings and has an enhanced flywheel effect! An AMS AS5040 hall effect sensor  detects the angular position of a magnet located inside the wheel’s axis. A microcontroller will read the sensor as well as the buttons and communicate with the computer via a FTDI USB to serial converter.