Hi there,
Our quadcopter is using pixhawk and we came to the ESC calibration process after the initial setups on mission planner. We plugged and unplugged the power, after that we powered it again following the instruction at: http://copter.ardupilot.com/wiki/initial-setup/esc-motor/
We did not hear the tone indicating the cell number just a long tone. After the whole calibration process, we turn the throttle up but the motors did not respond at all. It was as if we did not do the calibration.
We then tried to skip the esc calibration and straight to arm it. After arming the copter, we turned the throttle up but only one motor was spinning well and the other three unstable. And that only maintained for about 6 seconds. After that, the pixhawk automatically restarted.
We've gone through checking the ESCs, leads and motors problems and found that three of the ESCs did not work well so we were planning to change it. However, I wonder is there a problem related to the failed ESC calibration? Why all the motors stopped spinning after a few sec and the pixhawk restarted?
Replies
Thank you, Nolan. I found out that my problem is a quite unique one. I was using the power supply in the lab rather than the LiPo battery. When I turned on the throttle, the current in the circuit exceeded the max value in power supply and therefore it broke out every time. I guess hardly anyone else shares the same problem. Anyway, later that day I was using a 7.4V LiFe battery and the arming went well. The only concern is that the motor spinning was unstable. I've successfully done the radio and ESC calibration and the motors were spinning synchronously. My guess is that it might be the power source problem since it was not enough power?
Any suggestion would help.