I have Ardupilot 4.0 with Pixhawk 4 mini FC. It is a large jet drive boat with petrol engine, steering is operated by the jet nozzle.
All controls work well in manual mode but when set to auto no throttle is applied. I have done the motor test which also doesn’t operate the throttle. steering operation is good. The channel assignments all appear correct and I have tried the various suggestions linked with this topic in the forums. there is no safety switch set and the throttle arms correctly in manual mode.
The throttle is operated by a servo and no reverse function is required.
Does anyone have any ideas please? I am new to this and struggling for what to try next! thanks in advance for your time.