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.
This is a larger IG32 gear motor robot that utilizes three omni-wheels to vector it in any direction. By changing the speeds and directions of the motors the robot can drive in any direction without needing to turn. Customized version of TP-253-003.