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Fed up with Zenmuse H3-3D Gimbal...

Discussion in 'Zenmuse H3-3D/H4-3D GoPro Gimbal' started by RobertMfromLI, Sep 10, 2014.

  1. RobertMfromLI

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    So, first, the H3-3D started experiencing the yaw-jerk-left phenomena. And as standard/as always, the gimbal is really good at hitting the safety pins if the yaw motion is too much.

    Now, that same motor (the yaw motor) doesn't finish its calibration, and sounds like it is struggling through every motion. The gimbal almost looks like it is doing "the gimbal dance" that we've seen in the latest firmware update, while sounding like it is struggling (almost like a grinding sound).

    I'd flown a number of flights, done nothing with the Phantom 2, except sit it upside down so nothing was on or near the gimbal, took it back out for the next flight, stuck the battery in, and turned it on. And suddenly it's acting quirky and won't finish what seems to be its calibration.

    I sent DJI a "report" through their useless online system... I call it useless, because apparently reporting warranty issues through their tool makes them send a response saying to call them for warranty issues. How nice. I will do that tomorrow.

    In the meantime, here's my first note to them... I will let you know how this works out, but honestly, I have a feeling that the problem is in the design itself (as noted in my note to them):

     
  2. OI Photography

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    Robert, can you get a pic of your gimbal while mounted? Or better yet, a vid clip of its behavior when powering on?
     
  3. RobertMfromLI

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    Will do.
     
  4. RobertMfromLI

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    Here's what it does, and how it sounds... :cry:

    [youtube]https://www.youtube.com/watch?v=5hjm5skHtk0[/youtube]
     
  5. OI Photography

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    Ahh, I see now. I assume you've already checked to make sure the top motor isn't rubbing up against the battery or anything, yes?

    I saw a post a day or two ago, either on this forum or FB, that had a solution that might be worth trying for you. Basically there's a small set screw in the top part of the frame that can come loose and cause balance and behavior issues. I can't find it at the moment, but I'll keep looking and let you know if I turn it up.

    EDIT- Found it: https://www.facebook.com/groups/DJIGuys ... 253999879/

    Start with the 10th post and read from there.
     
  6. RobertMfromLI

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    I solved that after only the first few flights with the gimbal extension. :(
     

    Attached Files:

  7. RobertMfromLI

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    Thanks so much!!! Joined the group last night, and can see the post as of this morning. I will try this tonight, and report back. :) :D
     
  8. RobertMfromLI

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    You might have just saved me $400...

    That allen screw is easy to get to and tighten (after re-aligning the motor), and the gimbal now calibrates. It feels a little weak, but seems to work fine on ground tests.

    Sounds like another is loose (same sound, though much less prominent, seemingly from a different motor), and those are a bit more difficult to get to, requiring a bunch of disassembly, as noted in the links you provided.

    Thanks again!
    Rob