Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Gimbal acts weird on start up

Discussion in 'Standard/4k Discussion' started by copeland3300, May 7, 2016.

  1. copeland3300

    Joined:
    May 7, 2016
    Messages:
    7
    Likes Received:
    2
    I just replaced the flat cable for my P3S after a minor crash. Additionally, one of the gimbal motors separated, but it seems to go right back together without a problem. DJI Go just says there's a gimbal problem and I have to contact DJI.

    Here's a video and a picture to help show what I'm talking about.



    picture (sorry the URL is crazy long)

    I also have one where I'm rotating the gimbal and can't see any bends on the posts or anything like that.



    I've searched around, but I can't find any help, so anything you all could suggest would be great.

    Thanks!
     
  2. mdowney58

    Joined:
    Feb 15, 2016
    Messages:
    489
    Likes Received:
    113
    Location:
    Mountain City, TN
    Looks exactly how mine was doing after replacing the ribbon cable.
    My issue was due to me mistakenly installing the pitch motor shaft turned 180° from the correct position.
    If memory serves, I had the flat on the shaft facing forwards. After taking it all back apart, and rotating the pitch motor shaft, all was well.

    Sent from my SM-N910V using Tapatalk
     
  3. copeland3300

    Joined:
    May 7, 2016
    Messages:
    7
    Likes Received:
    2
    Nice, thanks for the info, I'll give that a shot.
     
  4. copeland3300

    Joined:
    May 7, 2016
    Messages:
    7
    Likes Received:
    2
    So rotating the shaft and the sensor seems to have stopped it from freaking out. Now the only weird thing it does is when it starts up, the camera is rolled at a weird angle until I manually reset the gimbal calibration.

    Perhaps I have to keep adjusting the sensor and shaft?
     
  5. mdowney58

    Joined:
    Feb 15, 2016
    Messages:
    489
    Likes Received:
    113
    Location:
    Mountain City, TN
    Which sensor and shaft are you referring to?
    And I assume you are saying the camera "roll" is tilted off to one side?
    That may be the adjustable shaft of the roll motor.
    I've not done this, but if it is the roll that's off, you can remove the back cover from the roll motor.
    There's a flat on that shaft (extending to the rear) that sits in a pot. That flat (I believe) should be aimed straight up.
    If it's out of adjustment, it can be adjusted. I've not done it, so I can't advise, but others have posted on how to.

    Sent from my SM-N910V using Tapatalk
     
    #5 mdowney58, May 7, 2016
    Last edited: May 8, 2016
  6. copeland3300

    Joined:
    May 7, 2016
    Messages:
    7
    Likes Received:
    2
    Yep that's exactly the one that's the problem. I'll keep tweaking it.

    Thanks again for your help with the first part of this, it helped a lot.

    EDIT:

    So ultimately I just had to get the roll sensor adjusted so that it was like it is in the photo.Now it's all working exactly as it should.
     

    Attached Files:

    #6 copeland3300, May 7, 2016
    Last edited: May 7, 2016
    Squirrel! likes this.
  7. mdowney58

    Joined:
    Feb 15, 2016
    Messages:
    489
    Likes Received:
    113
    Location:
    Mountain City, TN
    Wait!
    First, we discussed the pitch motor....the one the camera mounts to.
    After that, it was the roll motor.
    Your response sounded to me like you are going to tweak the wong one maybe. (Even though there's no minor adjustments possible on the pitch motor)

    Sent from my SM-N910V using Tapatalk
     
  8. copeland3300

    Joined:
    May 7, 2016
    Messages:
    7
    Likes Received:
    2
    Oh I see what you mean.

    I did the one that's giving me all the trouble. I believe it's the roll motor (the one behind the camera).
     
  9. mdowney58

    Joined:
    Feb 15, 2016
    Messages:
    489
    Likes Received:
    113
    Location:
    Mountain City, TN
    Interesting! So all that bad behaviour you showed in your video was from the roll motor out of adjustment?
    How far out was it?

    Sent from my SM-N910V using Tapatalk
     
  10. copeland3300

    Joined:
    May 7, 2016
    Messages:
    7
    Likes Received:
    2
    It was about 180 degree out of alignment, which ultimately I suppose make sense given how it was freaking out, haha
     
    mdowney58 likes this.
  11. mdowney58

    Joined:
    Feb 15, 2016
    Messages:
    489
    Likes Received:
    113
    Location:
    Mountain City, TN
    Good to know! Thanks.
    I knew the pitch motor 180° out would cause this, but I had no experience with the roll motor being out 180°

    Sent from my SM-N910V using Tapatalk