I have a problem with one motor on my Erle Copter:
After connecting the LiPo battery (fully charged, measured OK), I can hear the start-up jingle from the three of the ESCs. The ESC, however, emits a continuous beeping sound, around once per second (video of the power-on sequence: https://youtu.be/n6kihd0BS8k).
I am able to calibrate the other ESCs fine and control the motors, while the other does not turn the motor at all.
For testing, I connected the suspected faulty ESC to a different motor, yielding the same beeping sound.
Is the beep code an indication of invalid calibration or a sign of a defective ESC in need of replacement?
Thanks a lot for your help in advance!