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Mini 3 Pro compass/heading drift
381 8 7-1 20:56
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jefish
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United States
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I find that when sitting in one spot in the sky, the M3P will very slowly rotate to the left (CCW). I have to keep very slight pressure on the yaw stick to keep the subject centered. I've only tried "parking" like this at n hundred feet capturing large vistas, not down low with trees and other close-in objects. Need to try that, see if the sensors are maybe used to augment the compass? Dunno.

  • Happens in all three flight modes.
  • Happened in the original shipped firmware, and the 2 or 3 that have come since.
  • I've done a compass and a IMU calibration, no change.

Anyone else? What else can I try?


7-1 20:56
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hallmark007
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Flight distance : 7732080 ft
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Ireland
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Drone moving around like that will usually be down to IMU. It’s the job of IMU to maintain the aircraft in place. It’s not a compass problem and if it was you would get a warning. Weak GPS or sensors could also be the issue. I’m not sure if you can calibrate downwards sensors on Mini 3 in assistant it might help if you can. Also calibrating IMU “must” be done on a level surface and you should really use a spirit level to insure its correct.
7-1 21:27
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DJI Stephen
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Hello there jefish. I am sorry for the trouble this has caused and thank you for reaching out. May we please know if you are receiving any error message on the DJI Fly application when this is happening and may we also please know before having this issue was there a hard landing or a crash happened to your DJI Mini 3 Pro for us to be able to isolate the issue? Thank you.
7-1 21:56
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jefish
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United States
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DJI Stephen Posted at 7-1 21:56
Hello there jefish. I am sorry for the trouble this has caused and thank you for reaching out. May we please know if you are receiving any error message on the DJI Fly application when this is happening and may we also please know before having this issue was there a hard landing or a crash happened to your DJI Mini 3 Pro for us to be able to isolate the issue? Thank you.

No errors, no hard landings or crashes. It has done this since the day I unboxed it a week ago.

Again, it's a very slow rotation. If you watch the screen for only a few seconds, you'll never notice. But park the drone in one spot and record for 5 minutes, you'll definitely notice that it doesn't end up pointing the same direction as when it started.
7-1 22:04
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Blériot53
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Flight distance : 4301667 ft
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United Kingdom
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jefish Posted at 7-1 22:04
No errors, no hard landings or crashes. It has done this since the day I unboxed it a week ago.

Again, it's a very slow rotation. If you watch the screen for only a few seconds, you'll never notice. But park the drone in one spot and record for 5 minutes, you'll definitely notice that it doesn't end up pointing the same direction as when it started.

Are you sure it's the drone that's rotating, and not the gimbal that's drifting slightly?
I get that sometimes with my Mavic 2 Zoom.  I've not had the Mini3 Pro long enough yet to test
that out. Bad weather today is keeping me grounded.
7-1 23:01
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JJB*
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Flight distance : 8916014 ft
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Hi,

My first thought was a stick calibration should fix this issue.
If the yaw stick gives little input while in mid position than drone will yaw.
Do you have a 5 minute flightlog on this issue?If you like upload > https://www.phantomhelp.com/LogViewer/Upload/
Post the uploaded link on here

Low GPS reception gives horizontal instability, but the heading drone does not change.To keep the heading compass, gyro and acc meters for this.
Same for vision, not for keeping the heading correct.

cheers
JJB


7-1 23:44
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jefish
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United States
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Recalibrated the compass and IMU again, in a better location. No change. Today's flight started as a CW rotation, then kinda "corrected" itself when pointing downward, but then became a CCW rotation.

See here for an example of just one flight.


I'd immediately want to do a stick calibration in such cases, but that doesn't seem to be an option on the DJI RC controller. I'd upload a flight log, but not sure how to fetch it (this is my first DJI product). Tips?
7-2 19:28
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jefish
lvl.4
United States
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Heeyyyyyyy, I have an idea: I'm going to switch from Mode 3 back to Mode 2. If the movement changes from a yaw to a lateral drift, I know it's an issue with my right stick.
7-2 19:32
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Labroides
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Flight distance : 9991457 ft
Australia
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jefish Posted at 7-2 19:28
Recalibrated the compass and IMU again, in a better location. No change. Today's flight started as a CW rotation, then kinda "corrected" itself when pointing downward, but then became a CCW rotation.

See here for an example of just one flight.

I'd upload a flight log, but not sure how to fetch it
Go to: https://www.phantomhelp.com/LogViewer/Upload/
... where you'll find instructions to upload the data to that site and it will give a report
For help interpreting the data you can post a link for the report here.
Or just post the .txt file.
7-2 22:34
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