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OpticalEncoder

An optical encoder is used to track the motion of the motor as the output shaft turns.

The Encoder: http://www.flickr.com/photos/stilldavid/2474950729/

Mounted on the back of the motor with photogate: http://www.flickr.com/photos/stilldavid/2475768802/

Motor mounted on the car: http://www.flickr.com/photos/stilldavid/2475770014/

And the output on an O-scope: http://www.flickr.com/photos/stilldavid/2474953559/

TODO: fix this page.