This version of the QRE1113 breakout board features an easy-to-use analog output, which will vary depending on the amount of IR light reflected back to the sensor.
This tiny board is perfect for line sensing applications and can be used in both 3.3V and 5V systems.
These sensors are widely used in line following robots - white surfaces reflect much more light than black, so, when directed towards a white surface, the voltage output will be lower than that on a black surface.
Check description below for links to instructions and datasheets!