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Notify me when its in stockAnalog Grayscale Light Sensor - Line Tracking Module, The grayscale sensor is an analog sensor. It can be used with the Arduino sensor expansion board v5.0 to detect different colors of the ground or desktop and generate corresponding signals. It can perform interactive work related to color, and can also be used as a patrol car's tour. The power supply should be the same as the controller, usually 3.3V or 5V.
S:Signal output
+:Power supply (VCC)
-:Ground (GND)