DIY haptic input knob: BLDC motor + round LCD
scottbez1 · 2 HN recommendations
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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.
Why HN recommends it: 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.
“I made a rotary input device that provides software-defined "virtual" detents and end-stops, implemented using a BLDC gimbal motor.” Read on HN ↗