In a recent email, Julian Lana-Sarrate, an independent embedded designer, described a good method for confirming the operation of a rotary encoder using a rising edge-count measurement. He included ...

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.

Adafruit has made an I2C interface for four rotary encoders. It comes in the form of a PCB with four footprints that accept one of the most common rotary encoder forms (Bournes PEC11 horizontal style) ...

HEIDENHAIN is meeting the market demand for high-speed, high-resolution modular rotary encoders for motion feedback with the launch of the ERO 2000 series encoder.

HEIDENHAIN’s RENCO brand of encoders are well suited and available for use within a variety of mobile robot applications.