If you have a brushless motor, you have some magnets, a bunch of coils arranged in a circle, and theoretically, all the parts you need to build a rotary encoder. A lot of people have used brushless… ...

Rotary and linear optical encoders are common in position and motion sensing. ... For each encoder position, there is a different binary output -- shaft position is absolutely determined.

17 thoughts on “ Use A Brushless Motor As A Rotary Encoder ” ... January 18, 2017 at 11:45 pm hmm, looks very much like what i got on my bench right now. but i will not use it as an encoder..

In devices which use rotary knobs, the AS5601 and its paired magnet may replace a rotary encoder without any change to the host microcontroller or its application software.