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ESC calibration motor "twitch"

Posted by Jeff Rousseau on September 19, 2011 at 6:15am

Hey Folks,


I just built my ArduCopter kit from jDrones and all seems to be going well up until ESC calibration.  Looks like 3 out of the 4 ESCs work, but 1 makes the motor "twitch" sometimes--seems kind've random when it chooses to twitch or not (see vid).  I've tried the suspect ESC on another motor that didn't twitch and the suspect ESC makes it twitchy--so it looks like an ESC issue and not a motor.

 

Here's a video I made of the problem:

https://www.youtube.com/watch?v=Xc7Qfv-NFb8

 

Is my hardware broken? What should my next steps be? Buy a new ESC?  The bullet connections look solid.

 

Thanks,

Jeff

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Replies

  • Kirill September 28, 2011 at 9:10pm
    And if you give a little throttle and motor starts twitching, what happens if you help him to start spinning by hand?
  • Developer
    Jason Short September 19, 2011 at 9:23am

    Swap the motor with another one to see which failed: the motor or the ESC.

    Do you really fly with your throttle inverted like that? Try reversing the throttle channel so neutral is low.

    Jason

  • Jeff Rousseau September 19, 2011 at 7:30am

    Just FYI if it's not immediately obvious from the video, I'm following the MANUAL instructions here:

    http://code.google.com/p/arducopter/wiki/AC2_ESC

     

    PS I just re-soldered the bullets on the ESC and no change...

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