Need help with this intermittent issue. On a regular basis, we get a mission planner warning “bad compass health” plus spike way down in voltage - almost like the pixhawk is experiencing a brownout. This is a Tarot 680pro hexacopter, 4s 5000mAh battery. Pixhawk is powered by 3DR power module. There is no back up power to the servo rail. I have attached the MP log - you can see the spike down in power at 17:22.
Does anyone know if this is indeed a brownout and would be solved by setting up a 5v bec to the ch8 main out?