I am currently building a ROV that will be controlled via an arduino microcontroller. It will have internal power. This submarine will use 6 12v bilge pumps with an amp draw of 2.5 amps. I plan to control them with 6 relays. This submarine will use 3 servos, 2 for camera pan and tilt and 1 for controlling a gripper. It will have to 12v lights which will be controlled with 2 more relays. I need a way of somehow controlling this whole setup over a 150ft cat5 cable*. I would like to be able to use a joystick for movement and a tumbstick for the camera pan tilt. I want to use a switch for the lights. Does anyone know how to control all of this?.
*voltage drop must be considered.