I have an Adwanced ROV Electronics package. I have now installed it and successfully tested it several times. Suddenly yesterday I could no longer establish a connection between ROV and ArduSub. I managed totrace the problem back to the Pixhawk. If I unplug the USB cable between Raspery and Pixhawk, I get a video signal. Unfortunately I cannot connect the pixhawk directly via USB to the laptop. It says owerpower on usb port. If I operate it with an external power supply via the SBus pin, the LEDs light up properly, but no USB connection can be established.
Can you help me?