Hi, my problem is that I am trying to connect the ROV to my Computer to set up the Joystick Controller and this stuff. I am using a Fathom-X Tether Interface Board Set to connect my Computer to the ROV. This works with two Boards, one connected to the computer via USB (Power) and Ethernet (signal) and this board is connected to the other board through a signal cable (yellow and blue). The yellow cable is in the positive port on both boards, and the blue cable is in the negative port on both too. Using a multimeter, we can see that from one board to the other there is a connection, so this is not the problem. We have tried to replace the Ethernet cable multiple times, even if it works. The board in the ROV is connected to the Raspberry PI trough a Ethernet Cable, and the Raspberry PI is connected to the Pixhawk through USB and a voltage regulator (3A-6S UBEC)
Sorry for my English, and thank you everyone.