Hi @ugurdemirezen, welcome to the forum
Unidirectional ESCs arenât expected to work with our normal ArduSub firmware, because it expects bidirectional ESCs and sets the âzero throttleâ point accordingly (1500us PWM pulse duration, which is at 50% throttle for unidirectional ESCs). If by âthere was a short circuit in the systemâ you mean âall the thrusters started going and wouldnât stopâ then thatâs likely the issue youâre running into there.
Assuming youâre using our T200 thrusters, note that theyâre only rated to 20V. Itâs possible to run them at higher voltages, but not recommended.