Veerobot Assembled Double Sided Printed Circuit Board(Pack of 1)

These are tiny non-contact grayscale sensors which includes a 5mm photo resistor (light-controlled variable resistor) and an integrated 5mm White LED. Once the module is powered on, the analog pin can be connected to analog read of an Arduino or any other microcontroller board and can measure the ambient light falling on the photo resistor. The digital output can be tuned using the trimpot and can be connected to digital input pin of the microcontroller. The combination of both analog output and digital output in a single module is great for obstacle avoidance or for color detection (grayscale values)