1 How to use linear encoders with Arduino. hardware, code, and demo.
Recommended as a clear explanation of how salvaged printer optical encoder strips produce quadrature signals you can read for position and direction.
Topic
quadrature
2 videos. Ranked by independent recommendations, not by views.
2 How Rotary Encoder Works and How To Use It with Arduino
A visual explanation of quadrature encoders, showing why comparing the two output signals reveals direction and why counts exceed the number of teeth.
