Low Res Optical Encoders for Speed Control

[BornaE]

Originally Posted by KrazyCarl92

This is the sort of workaround I'm interested in if we can't do it with a 360 count disc. The only thing that would usually concern me about this approach is a layer of tape (which if I remember correctly is thicker than the plastic disc) could change the tolerance on the encoder for the distance from the sensor to the disc. Was this even an issue, or could it be easily resolved if it does present a problem?

Since you only have 2 transitions, it would be better to space the disc off the actual distance so the image is not focused. When the encoder dist was spaced correctly, it was picking up an extra tick from a scratch on the aluminum. We put the disc closer to the sensor to make it blurry so it does not pick up small scratches.