The camera and laser guidance is built into the front transparent dome. The USB cable is connected to the Beaglebone Black via the USB hub and provides the video signal from the Full-HD camera (1920 x 1080) as well as the power for the two laser diodes. The two laser rays crosses approximately 25cm in front of the camera lens. An object in front of the camera at exactly this distance will only show a single red spot on its surface. Closer or farther away objects will show two spots. Moving closer to an object will either decrease or increase the distance between the two spots if the distance to the object is greater or smaller than the 25cm.
