Reflectance Sensor

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Reflectance Sensor Description/Functions:

The sensors are the red small boards with the single LED and phototransitor. These are placed in front of the wheel that has the reflective tape. The reflective tape must be facing towards the sensors and it is advised the sensors are as close as possible to the wheel for good signal. The sensors ultimate function is to provide “marks” for the Arduino system to indicate when it has passed over a non-reflective surface by relying on the phototransitor (User Manual).