Sharp GP2Y0A21YK0F

The GP2Y0A21YK0F Sharp distance sensor is a great way to add obstacle avoidance or motion sensing to your robot or any other project. With a detection range of 4″ to 32″ (10 cm to 80 cm) and an analog voltage indicating the distance, this sensor is very easy to use.

The Sharp distance sensor is a popular choice for application and development that require accurate distance measurements. This IR sensor is more economical than sonar range finders, yet it provides much better performance than other IR alternatives. Interfacing to most microcontrollers is straightforward: the single analog output can be connected to an analog-to-digital (ADC) converter for reading distance measurements. The output can also be connected to a comparator for threshold detection.