Gimbal creeps back to neutral at any maintained pitch - CC3D
« on: February 06, 2016, 02:23:39 pm »
I have a pitch Gimbal using an analog servo that for the most part works fine. Using a CC3D ..Nothing fancy in the setup. The problem is that when the pitch the craft up or down the servo will move as it should BUT hold it in that position for a few seconds, and the servo will creep back to the neutral position. It does not matter what angle of pitch it will move to where it should be, but then it slowly goes back to neutral. Pitching the craft up and down fast works, do it slow and the servo gets all out of whack until it stays level for a few seconds to "re-set itself. I have tried swapping it with a digital servo just to make sure it wasn't that particular one and have tested a few different frequencies with no help.  I use it for FPV flying so it is very important that it maintains horizon. Thanks for any assistance!

f5soh

  • *****
  • 4572
    • LibrePilot
Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #1 on: February 06, 2016, 02:54:00 pm »
Hi,

Which stabilization mode did you choose in Gimbal tab ?
Post a screenshot.

Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #2 on: February 06, 2016, 02:57:11 pm »
Attitude

Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #3 on: February 06, 2016, 03:00:16 pm »
I actually tried both settings and they seem to do the same thing.  The documentation section for this hasn't been created in the Wiki (That I could find) and OP is gone forever it seems.

I should probably add that I am not using any other input.  The default is Accessory 0 and I have set it to none. With this CC3D I am only using it as a Gimbal control nothing else (not sure that makes any difference)

Thanks for the assistance!
« Last Edit: February 06, 2016, 03:06:41 pm by upgraders »

f5soh

  • *****
  • 4572
    • LibrePilot
Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #4 on: February 06, 2016, 03:23:57 pm »
Remove the "Roll/Pitch mixed" Gimbal type: keep to "Generic"

Accesory0 can be removed if you don't need control over the pitch gimbal axis.


Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #5 on: February 06, 2016, 03:29:15 pm »
I removed the input and set to generic and still does the same thing :(

f5soh

  • *****
  • 4572
    • LibrePilot
Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #6 on: February 06, 2016, 03:57:05 pm »
Post your config file

File > Export UAV settings

Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #7 on: February 06, 2016, 04:12:15 pm »
sure  here you go

f5soh

  • *****
  • 4572
    • LibrePilot
Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #8 on: February 06, 2016, 05:24:12 pm »
Looks like you have a custom orientation for your board.

Go into Attitude tab and set board rotation (maybe Roll=180°?), save and next do the level calibration.
https://librepilot.atlassian.net/wiki/display/LPDOC/CC+Attitude+Configuration



Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #9 on: February 06, 2016, 06:05:14 pm »
Yes I do have a custom calibration and it is orientated correctly.  The camera moves as it should it's just the servo creeps back

f5soh

  • *****
  • 4572
    • LibrePilot
Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #10 on: February 06, 2016, 06:08:43 pm »
- Please set the Board Attitude Rotation first. (currently all zero)
- Save
- Redo Level calibration

You cannot fly safe with the Accelerometers settings you posted, just move the board and see the PFD behavior.

Jeuke26

  • **
  • 96
Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #11 on: February 06, 2016, 06:13:48 pm »
I did exactly the same a few weeks ago so it's certainly possible.



Re: Gimbal creeps back to neutral at any maintained pitch - CC3D
« Reply #12 on: February 06, 2016, 06:36:49 pm »
!!!  It works !!!  thanks guys.  Since I was only using it for a Gimbal stabilizer I didn't think upside down orientation would have mattered since the servo could be reversed...  oh well  thanks again for the Saturday afternoon help...  now if I can get another copter's esc's calibrated through a DJI Naza my day will be complete lol  another forum for that one!  :P