Hello. I need help from you. I started building a F550 drone with 6 motors a week ago. I connected all the ESCs with approx. 2.8 and the receiver. I calibrate the compass, ESC, receiver, transmitter and flight modes. Everything works great, but when I turned on the drone and tried to take off, but only 4 motors out of 6 were working, the remaining 2 CW and CCW kept beeping. I restart APM, but nothing helps. I checked all the wires and connections. What should I do in this situation?
If you are using an APM 2.8 hardware, then you need to update your hardware. That board has been obsoleted nine years ago and un-supported for the past 7 years.
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