This encoder type is normally used to monitor shaft position during power up and power down. Unlike quadrature encoders, the encoded output lets you read the shaft position without moving the encoder.

Some encoder output types are more susceptible than others. The two main output types are push-pull and open collector.

Encoders are fantastically useful devices for human-machine interfacing. The issue for the makers, teachers, students, and engineers trying to use them is that many have less-than-ideal output ...