Robot electronics sharp infrared distance sensors robot electronics shpgp2y0a21yk0f this 10 to 80cm infrared distance sensor is ideal for use in robotics projects because of its ease of use the sensor gives an analogue output which has a 2v variation between the maximum and minimum distances meaning it can be interfaced with just about any microcontroller robot electronics gp2y0a21 10 80cm optical sensor 5v