This robot was mobile, and carried a camera. You might be wondering why did it have two ultrasonic sensors, and why was one in such a lofty position? Well, young humanoid had the idea that the robot was to follow a line to an object, stop and press the shutter button on the camera if both ultrasonic sensors saw it, meaning the object was a tall one. If only the bottom ultrasonic sensor saw it, it would follow the line more distance, then take a picture.
