camera stablization twitching

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Arducoper v2.3
In camera stablization when copter is not moving, camera servo are twitching 
making small camera movement.

What steps will reproduce the problem?
1.Connect gimbal servo, and power everything
2.
3.

What is the expected output? What do you see instead?
The expected behavior should be no movement at all, when copter is not moving.

To check if problem was coming from servo, servo were tested and connected 
directly to the radio receiver, and no twitching when connected directly.

Original issue reported on code.google.com by airma...@gmail.com on 12 Mar 2012 at 7:32

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It seems that, somebody has the same problem 
http://diydrones.ning.com/forum/topics/channel-6-twitch?xg_source=activity

Original comment by airma...@gmail.com on 16 Mar 2012 at 2:19

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 I noticed the same problem, but  twitching appears around 1/2 throtle stick position (testet on the ground without ESCs). I wonder if it could be some channel interference and encoder problem ? 

Original comment by dj_...@wp.pl on 13 Apr 2012 at 10:17

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DJ,
     If you're using an APM1 and have an atmel programmer, could you try upgrading the ppm firmware according to the instructions on this wiki page?  I can't guarantee a solution but it seems to be helping some people.
     http://code.google.com/p/arducopter/wiki/Encoder

Original comment by rmackay...@gmail.com on 16 Apr 2012 at 12:38

• Changed state: Accepted

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I can't say I've noticed this any more on APM2, 2.5.5. 
Thanks all.

Original comment by crispin....@gmail.com on 31 May 2012 at 7:27

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I am also having problems with gimbal setup, The ch10. is twitching but 
working, The ch11 is twitching (more than ch10) and is working.

I have connected the servos to Ch 10 and Ch11, enabled tilt and roll servo in 
mission planner.

Running the V2.7.1 Hexa Firmware.

Tested with New Futaba S3156 Digital servos
Tested with New JR ES539 Analog servos

Results is consistent with all tested servos.

I am looking for a solution to the problems but have not been able to figure it 
out.

Helge.

Original comment by Laptop2...@hotmail.com on 20 Aug 2012 at 6:44

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Running MegaPirateNG 2.9r5 and the same problems exist on ch10&11 assigned to 
gimbal. Seems fine on the ground but once in flight the jitters start close to 
end of 4 minute flights. Tried 5&6 and the jitter was insane.

With MP 2.7r4 using channels 7&8 all was good. I realize that MP for the Crius 
is a port but the problems seem identical.

Cheers,
Andy

Original comment by andyho...@gmail.com on 13 Feb 2013 at 5:24

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I hawe twitches on my gimbal to on megapirateng 2.9 on both pitch and roll.
it works perfekt but it get twitches about avery 3 sek I think there is some 
problem with the signal not updating smothly enough. Conected to a reciver 
these hitec digital servos  I use are perfect smooth and flawless. Had same 
problem with cheap servos to but way way worse.

Original comment by EmilKar...@gmail.com on 30 Mar 2013 at 7:06

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I have the same twitch. Is there anyone working the problem? Or know of the 
solution?

Original comment by sto...@gmail.com on 29 Jun 2013 at 11:12

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Closing all issues on the old issues list by marking them WontFix.

If this is still a valid issue please re-raise it on the new GitHub issues 
list: https://github.com/diydrones/ardupilot/issues

Thanks!

Original comment by rmackay...@gmail.com on 21 Jul 2013 at 2:14

• Changed state: WontFix