With the use of ultrasound the LEGO Mindstorms EV3 & NXT Ultrasonic sensors could detect the distance to an object. You can use it in many different ways most of them very interesting and fun. Some of them a little more challenging, but rewarding.
This program uses the Ultrasonic Sensor and the yaw angle detected by it. It aligns the robots to a border and gently pushes on a mission models.
This program uses the Ultrasonic Sensor and the yaw angle detected by it. It aligns the robot to a border and gently pushes on a mission model.