SmartKnob: Open-Source Haptic Input Knob Demo

HN people hold it up as a polished solo hardware project and the go-to example of haptic knobs, including in discussions of physical car controls.

A two-minute demo of SmartKnob View, an open-source input knob built from a brushless gimbal motor, magnetic encoder and round LCD. Closed-loop torque control gives software-defined detents and end stops.