For his senior design project, Brane was able to create a ROV without a tether. He used an Xbox controller that is connected to his laptop in order to control the vehicle’s movement. The motors are controlled with NXT Mindstorm parts. Communication to the device is made possible by an NXTBee on board and a XBee module connected to the PC.
Read more about the LEGO ROV on Dexter Industries
Read more about the LEGO ROV on Hackaday