3DoT compatible Infrared (IR) sensor shield.
QRE1113 Reflective Optical Sensors measure reflectivity to detect a change in color or material. The two inner sensors on the IR Sensor Shield are at the perfect distance to follow a ~0.5″ thick line. The two outer sensors can be used to detect intersections and to aid in turning your robot.
The QR code on each of our shields links to its tutorial page. Click here to see the IR shield getting started guide on Arxterra!