HELP!! Problem with arming motors

I am new in building UAVs.

I am having some trouble with my quadcopter:

I try to arm the motors but they simply do not arm. SO I try to calibrate the ESCs an the throttle and it works fine, but I do not want to do this every time I want to fly. After calibrating I unplug the battery, plug it again and the motor do not arm.

Sometimes after some tries, the motors arm, so push to full throttle and when I lower the throttle the drone is still at full speed for some seconds, then the motors disarm and when I try to arm them again they simply don´t arm.

Help me please

Thank you 

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Replies

  • Hi Rafael, Can you tell us more about your quad?  Specifically, what Flight controller are you using and what firmware is it running.

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