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Zenmuse X5 Jello/Rolling Shutter (98% SOLVED) M600,D-RTK,X5
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11235 129 2017-1-3
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ricci2
Captain
Flight distance : 61158 ft
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France
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More testing today of the Ground station pro app and I used the geofence. Some very erratic behaviour from the controls, very jerky movements of the M600 near the fence boundary but the footage was rolling shutter free.  I think this is as a severe test as I can push it through and the footage is fine.

all the best ex, wobblers......

Ricci
2017-2-24
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ricci2
Captain
Flight distance : 61158 ft
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France
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You know when you should put a project to bed? when its sorted? Well I think I can now do this with the X5, the last test today gave me the information I have been looking for.
I wanted to know what direction the sensor travels in to generate the worst rolling shutter, now I know how to produce rolling shutter if anybody wants it as a special effect!!!!!
I was looking to do vertical testing only where the craft was lifted to the sky and then the ground at the highest accelerations possible, I changed the expo on the M600 to be very aggressive and took the craft to the top of the shop (max ceiling DJI allow) then plummeted the beast to the ground, repeat until board and do it once for luck or the batteries expire, depending on your attention span.
Results: the fix allowed me to isolate the severely impacted sensor and so on the vibration fixed craft I managed to induced some rolling shutter with extrem vertical movement, the horizontal movement did not induce R/S so the answer was the sensor is susceptible to vertical load transits or delta change velocity movement. This also answered the question as to why the R/s was bad when the camera is pointed down to the ground and the craft travels in a horizontal direction, the sensor rotates 90 degrees and its vonrable Y, axis now becomes a virtual X, axis and that's how the R/s takes hold, in theory the camera in the horizontal should have the least R/S under movement but if you add any inclination below or above 180 degrees it induces  a component of the Y, axis to be added and in my case that's what happened, rolling shutter increased as the craft was pitched in the vertical axis. Case closed I think.
Conclusion:  do the mods to the balance  the camera, locate the gimbal on the cog, and damp the top plate and that will reduce the effects of the R/S to a minimum, don't fly aggressively with the camera pointed to the ground ( diferent if taking stills as this is a snapshot in time, freeze frame.) don't use GSP if you are using a video pointing to the ground as it is very aggressive when it stops to take snapshots, 98% better with mods. Be realistic about the footage as you are hanging a camera in a floating fan in an unpredictable weather environment. Job Done.So far there have been only three people to acknowledge the rolling shutter on the X5, and IT, and myself have made huge improvements to our situation however if you have made any mods it could be good to get feedback.
Happy flying and a huge thank you to LT, and all who came together to fix this Non issue DJI.......

Ricci
2017-2-26
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MitchB
lvl.1
Flight distance : 140538 ft
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Australia
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Hi Everyone!!!
I just wanted to simplify and confirm your solution to this issue.

It appears you have all been though many struggles and eventually great outcomes - I'm hoping to limit my struggles through your help!

1. Adjust the arms on the plate to allow for the reverse mount of the X5R
2. Move the Camera pitch motor to the centre (approximate COG point) of the M600.
3. Fly and not cry!

Thanks!

Mitch
2017-7-30
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fansdcf8b0e0
lvl.2

Russia
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Dmitry_R Posted at 2017-1-22 10:27
hey lt, thank you for sharing and digging in! thank you ricci2 for your participation!  i did some tweaks and it went well.  
1. i moved the gimbal to the centre of the aircraft 2. i put back the front brackethttp://forum.dji.com/forum.php?mod=image&aid=38610&size=300x300&key=d29125a6e656a8e0&nocache=yes&type=fixnone[/img] 3. i put 2 washers and 2 ND filters for balance the gimbal with 45mm olympus lenses just for the testhttp://forum.dji.com/forum.php?mod=image&aid=38608&size=300x300&key=416898a0f9249e68&nocache=yes&type=fixnone[/img]
and i have cage for ronin mx installed with extra tough ruber bumpers.http://forum.dji.com/forum.php?mod=image&aid=38609&size=300x300&key=b0de844dfd89b358&nocache=yes&type=fixnone[/img]

Tell me where you can buy a mount camera gimbal? https://forum44.djicdn.com/data/ ... yyl9d5nz9999ld5.jpg
2017-9-30
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lt
lvl.4
Flight distance : 1975702 ft
South Africa
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fansdcf8b0e0 Posted at 2017-9-30 02:10
Tell me where you can buy a mount camera gimbal? https://forum44.djicdn.com/data/attachment/forum/201701/22/100703zyyl9d5nz9999ld5.jpg

I believe that mount is part of the Ronin upgrade/install.
2017-10-11
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DK-Fire
lvl.1
Flight distance : 973980 ft
Denmark
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Wow... this thread is really hard to digest when from Denmark and not having english as "my" language
2017-11-25
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DK-Fire
lvl.1
Flight distance : 973980 ft
Denmark
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Was there a solution to the jello ?
I'm having the same problem
2017-11-25
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lt
lvl.4
Flight distance : 1975702 ft
South Africa
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Hi DK-Fire.

It was quite hard to find the right solution and with all the inputs from the other flyers, we've managed to come to a manageable solution. Basically add weight (I've moved the RTK Receiver to the plate which also adds stiffness) to what DJI calls the Vibration absorbing board (Carbon fiber plate on the bracket) to reduce harmonics and vibrations from the craft. I've also since got into the habit of only recording video with a shutter speed of 1/60, 1/120 and in some extreme cases 1/240. Anything else will make jello appear since the camera resonates at a frequency very near the frame rate. There is a golden rule amongst the film makers to use shutter setting of no more than double the frame rate. Hope this helps and please feel free to leave your findings in this matter since we only managed to find a compromised solution.

Happy Flying
LT
2017-11-30
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VRpilot
lvl.3
Flight distance : 1544665 ft
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Spain
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Dmitry_R Posted at 2017-1-22 10:27
hey lt, thank you for sharing and digging in! thank you ricci2 for your participation!  i did some tweaks and it went well.  
1. i moved the gimbal to the centre of the aircraft 2. i put back the front brackethttp://forum.dji.com/forum.php?mod=image&aid=38610&size=300x300&key=d29125a6e656a8e0&nocache=yes&type=fixnone[/img] 3. i put 2 washers and 2 ND filters for balance the gimbal with 45mm olympus lenses just for the testhttp://forum.dji.com/forum.php?mod=image&aid=38608&size=300x300&key=416898a0f9249e68&nocache=yes&type=fixnone[/img]
and i have cage for ronin mx installed with extra tough ruber bumpers.http://forum.dji.com/forum.php?mod=image&aid=38609&size=300x300&key=b0de844dfd89b358&nocache=yes&type=fixnone[/img]

Hey Dimitry, where I can found those ronin mx extra tough ruber bumpers.
Cant find anything online, and DJI support have no idea.
Thanks
2018-1-25
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alvimMaico
lvl.2
Flight distance : 167999 ft
United States
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Hello friends. Sorry to bring this topic back. I recently bought an Inspire 1 and a gimbal zenmuse x5. When I'm using zenmuse x5 with OSMO I have no problems with jello effect, but when I'm using X5 in inspire 1 I have jello effect. Only with X5. I tested my X3 and my Z3 and they have no jello effect. Thank you
2018-12-27
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