thanks a log for your quick response. Well, this I tried already and then yes, it will work, since it basically just skips all pre-arm checks. But in my understanding "check board voltage" if I enable pre-arm checks should indicate that there is a problem, no? And I would rather be interested in how to solve it instead of applying a workaround. At least, if it is a problem. If for Erle-Brain the board voltage range on the pre-arm check in APM Planner should be modified in order to have a passed check then it would be ok to do so for me too.