The GP2Y0A21 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" and an analog voltage indicating the distance, this sensor is very easy to use.
Indoor GPS Starter Kit featuring one Modem and five Beacons to get your project running. Accurately position your robot to a couple centimeters indoors! Kit includes one modem, 4 standard beacons and 1 beacon with built in IMU.