(Remotely Operated Vehicle)
Here you can see our ROV with wires between the motor, the raspberry pi, the power station (the box on the right side on the desk) and the desktop.
On this picture, you can see (from left to right) the grappler, the motor controllers consisting of three circuit boards with plugs for the engines. And then the raspberry pi, which is the computer.
this image shows the back of our ROV. The cables are connected to the laptop and the powerstation.