h3Vqbp

Force feedback knob based on ESP32 S3, can be used as a Bluetooth controller

Overview

This work is inspired by smartknob (both hardware and software are incompatible) and achieves a thinner and smaller structural design.
A 24mm diameter brushless motor is used internally, with a single-stage gear transmission, and a 40mm large-diameter ball bearing is used to connect the rotating outer ring and the body to improve the feel.
The battery-less version is only 28mm tall, while the battery-powered version is 34mm tall, and both have an outer diameter of 55mm.

The circuit board is designed using the EDA pro version.
The software is developed based on Arduino and edited using VS Code.

Assembly: https://www.bilibili.com/video/BV1xe411j7kV/?spm_id_from=333.999.0.0
Demo: https://www.bilibili.com/video/BV1po4y1t7Jr/#reply163427131360

Design Files

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Update:2025-07-07 08:00:46

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