There’s a lot to like about this little remote, which is based upon a LilyGo TTGO ESP32 board with on-board display. The circuitry is basically that and a rotary encoder plus a tiny LiPo battery.

A lot of people have used brushless or stepper motors as rotary encoders, but they all seem to do it by using the motor as a generator and looking at the phases and voltages.

It has a rotary encoder and a button, making it easy and responsive to use. It also has a touchscreen, which adds a modern and easy-to-use feature to the device.

HEIDENHAIN’s RENCO brand of encoders are well suited and available for use within a variety of mobile robot applications. Specifically, the modular RENCO R35i and RCML15 rotary encoders have proven ...

Electronic enthusiasts, hobbyists and engineers looking for an open source rotary encoder complete with a circular 1.2 inch programmable TFT circular display may be interested in the Roendi.