Electronics > Electronics

color sensor aid

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Radiken:
I was doing research for a new robot in the works, and I came across these two videos:

http://www.youtube.com/watch?v=6960jAGCkiA
http://www.youtube.com/watch?v=EzClcwUqtlo


They both have a small black and white disc. As much as I can figure, They are there for the color sensors, but what specifically do they do?

Somchaya:
The small black-and-white discs are probably encoders, and they're used for feedback on the motors to determine how far they've turned. Encoders like those are usually used on DC motors for feedback.

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