The GP2Y0D810 is Sharp’s smallest and fastest distance sensor. With a sample rate of almost 400 Hz and a sensing distance to 10 cm, this sensor provides an attractive alternative to shorter-range LED-phototransistor reflectance pairs and longer-range but slower sensors such as the Sharp GP2Y0A21YK0F analog distance sensor. The output (Vo) is driven low when the sensor detects an object 2 cm to 10.25 cm away from it, and the output is otherwise high. There is approximately ±0.25 cm of hysteresis around the 10.25 cm threshold, meaning that the detected object will have to get to approximately 10.0 cm before the output goes low, and once low, the object will have to get to 10.5 cm before it goes high. There is no hysteresis at the 2 cm threshold.
