Replies

  • MR60
    Hugues April 21, 2014 at 11:41am

    Could it not also be a way too high Rate D value in the PID settings ?

  • Vassilis Fotinopoulos April 21, 2014 at 10:30am

    I think it is an electric and not electronic problem, ie one of the motors is not well-connected.......
    Check wires and proper connections.

  • Antonie Kruger April 20, 2014 at 10:54pm

    Hi Mark,

    We need a bit more info, there can be various reasons for a twitch like that.

    1. The transmitter is transmitting a spike on one of the channels.

    2. Your receiver is generating a spike on one of the channels that was not transmitted by the radio.

    3. One or more of the ESC's or motors are heading south.

    The best way to try and isolate the source would be to download the log file and look at it. A lot of information is logged. Post it here and let's see if someone can isolate your twitch.

    Are you sure you are not in autotune mode.

  • Developer
    Randy April 20, 2014 at 9:47pm

    I'd guess that's it's one of these issues.  There are a lot of things that can lead to little twitches :-)

      1. Futaba receiver with 8+ channels paired with old ppm encoder firmware (if it's an old board or a clone which doesn't have the latest version).

      2. the missing GPS is causing little twitches as the auto gps detection runs.

      3. ESCs aren't calibrated so occasionally a motor is stopping (and then restarting)

      4. blown 3.3v regulator which is leading to bad info getting through on the Accels/Gyro.

  • Randy Brazeau April 20, 2014 at 9:17pm
    Have you logged the motors?
    Randy
    • mark > Randy Brazeau April 20, 2014 at 10:18pm

      no. but sounds interesting. how do i 'log' the motors?

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