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RTH Cockeyed
384 9 3-15 11:03
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Edward J Smith
Second Officer
Flight distance : 1683707 ft
United States
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So I was wondering what causes this. As you can see my bird (P4P) is coming home sideways. I have done an IMU cal. and compass cal. but she almost always comes home this way. Any ideas?

3-15 11:03
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Mark The Droner
Captain
Flight distance : 2917 ft
United States
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I suspect your imu calibration may have been done too close to a metal object.
3-16 07:16
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Hellsgate
Captain
Flight distance : 1991555 ft
Australia
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Mark The Droner Posted at 3-16 07:16
I suspect your imu calibration may have been done too close to a metal object.

How can metal objects effect imu calibration?
3-16 18:03
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Cetacean
Captain
Flight distance : 2271506 ft
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Hellsgate Posted at 3-16 18:03
How can metal objects effect imu calibration?

Aloha Hellsgate,

     The compass is part of the sensor system involved with Inertial Measurement Units.  The inertia has to be measured against environmental factors and a compass is close to an ideal sensor for the measurement unit in a simple system like you would want in small aircraft.

     Hope this helps!

Aloha and Drone On!
3-17 01:51
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Cetacean
Captain
Flight distance : 2271506 ft
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Aloha Edward,

     Could wind be a factor?

Aloha and Drone On!
3-17 01:53
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Labroides
Captain
Flight distance : 9991457 ft
Australia
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Mark The Droner Posted at 3-16 07:16
I suspect your imu calibration may have been done too close to a metal object.

Metal (you really mean steel) has no effect on the IMU calibration.
None at all as there are no compasses or magnetic sensors involved.
You canrecalibrate your IMU on a steel surface without a problem.
All that matters is that it is level and still.

3-17 04:13
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JJB*
Captain
Flight distance : 1176729 ft
Netherlands
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Hiya,

Can you upload your flightlog, using > https://www.phantomhelp.com/LogViewer/Upload/

Mayby your camera is pointing not straight fwd, so it looks as the drone is drifting.

cheers
JJB
3-17 04:34
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Mark The Droner
Captain
Flight distance : 2917 ft
United States
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I have 3 different p2s that insist on pointing slightly to the right when on the way home from nnw to sse whether in rth or not.  Otherwise they fly perfect.  The one consistent thing is that all 3 are imu calibrated in the exact same spot near my desktop and ups.  Perhaps too near?  I need a longer USB cord.  Will advise.
3-17 08:31
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Labroides
Captain
Flight distance : 9991457 ft
Australia
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Mark The Droner Posted at 3-17 08:31
I have 3 different p2s that insist on pointing slightly to the right when on the way home from nnw to sse whether in rth or not.  Otherwise they fly perfect.  The one consistent thing is that all 3 are imu calibrated in the exact same spot near my desktop and ups.  Perhaps too near?  I need a longer USB cord.  Will advise.

The one consistent thing is that all 3 are imu calibrated in the exact same spot near my desktop and ups.  Perhaps too near?
IMU calibration is not affected at all by electromagnetic effects.
3-17 22:34
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Edward J Smith
Second Officer
Flight distance : 1683707 ft
United States
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Cetacean Posted at 3-17 01:53
Aloha Edward,

     Could wind be a factor?

There was a 7-10 mph wind but it was a tail wind.
3-20 06:52
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