Do i need to be in a big open field to calibrate IMU? i know compass i need to be away from any interference but what about IMU?

Only if you have a nice flat level table to do it on in the middle of a field, otherwise don't do it.
Had my Mavic since Nov 2016 and have never re-calibrated the IMU, factory settings are best unless the app tells you its needed.

Harbourside Posted at 1-17 05:27
Only if you have a nice flat level table to do it on in the middle of a field, otherwise don't do it.
Had my Mavic since Nov 2016 and have never re-calibrated the IMU, factory settings are best unless the app tells you its needed.

Okay one more question the other day when i did setup my drone for the first time and went to the park to fly it. my app told me compass error and i need to calibrate the compass. so i did that. But i felt i did it wrong. somehow the app said the compass calibration completed. maybe because i was next to my car. Which i shouldn't be i know. Can i just do th compass calibration again to put my mind at rest?

charbel1011 Posted at 1-17 05:32
Okay one more question the other day when i did setup my drone for the first time and went to the park to fly it. my app told me compass error and i need to calibrate the compass. so i did that. But i felt i did it wrong. somehow the app said the compass calibration completed. maybe because i was next to my car. Which i shouldn't be i know. Can i just do th compass calibration again to put my mind at rest?

Yes, ofcourse you can calibrate it again.

Just be carefull where you do a calibatration, choose an open field without metal etc nearby.

cheers
JJB

Hi Charbel1011,  thank you for reaching out. Make sure to calibrate your IMU on a level surface, and don’t move the aircraft during calibration. If you calibrate on an angled surface or move the aircraft during calibration, the aircraft’s attitude will be angled by default and it won’t hover stability, even without magnetic interference or other environmental issues. If your drone drifts a lot, IMU calibration may help resolve the issue. You may follow the video tutorial below on how to properly calibrate the IMU. If you have other concern, please feel free to contact us. Thanks for your support.

No, but  you need a flat surface to calibrate IMU

charbel1011 Posted at 1-17 05:32
Okay one more question the other day when i did setup my drone for the first time and went to the park to fly it. my app told me compass error and i need to calibrate the compass. so i did that. But i felt i did it wrong. somehow the app said the compass calibration completed. maybe because i was next to my car. Which i shouldn't be i know. Can i just do th compass calibration again to put my mind at rest?

Hi Charbel1011, You can calibrate the compass when flying in a new location, or a location that is different from your last flight. When the aircraft moves erratically during flight and the drone doesn't fly in straight lines. You can go this route: MC Settings--Advanced Settings--Sensor--Compass--calibrate. If you have other questions, please let us know. Thanks for choosing DJI!

Drameee Posted at 1-17 06:42
No, but  you need a flat surface to calibrate IMU

Not just flat.  It needs to be LEVEL for IMU calibration.

Harbourside Posted at 1-17 05:27
Only if you have a nice flat level table to do it on in the middle of a field, otherwise don't do it.
Had my Mavic since Nov 2016 and have never re-calibrated the IMU, factory settings are best unless the app tells you its needed.

I disagree, who knows how many time a drone has been dropped during its shipment from half way across the world. I checked my M2P's IMU when I first got it and found one of the sensors to be a little bit off. Luckily I have access to an one ton granite level table at my work for calibrating instruments.  

Maxi3D Posted at 1-17 12:19
I disagree, who knows how many time a drone has been dropped during its shipment from half way across the world. I checked my M2P's IMU when I first got it and found one of the sensors to be a little bit off. Luckily I have access to an one ton granite level table at my work for calibrating instruments.

Do u need the flat surface to calibrate anything beside IMU.

charbel1011 Posted at 1-17 14:09
Do u need the flat surface to calibrate anything beside IMU.

It's also useful to calibrate the gimbal on a flat and level surface. I use an app on my tablet to check for a level surface clinometer

Boffin Posted at 1-17 14:16
It's also useful to calibrate the gimbal on a flat and level surface. I use an app on my tablet to check for a level surface clinometer

Okay so the compass calibration must be made in a field. Imu and gimbal on a flat surface. Do i need to calibrate the RC or not necessary?

charbel1011 Posted at 1-17 14:25
Okay so the compass calibration must be made in a field. Imu and gimbal on a flat surface. Do i need to calibrate the RC or not necessary?

I would calibrate it if it was my drone. You just have to make sure the surface is level. and when you go through the motions of switch the drone's positions smoothly and gently during IMU calibration.

Maxi3D Posted at 1-17 14:43
I would calibrate it if it was my drone. You just have to make sure the surface is level. and when you go through the motions of switch the drone's positions smoothly and gently during IMU calibration.

Are u talking about the RC calibration or the IMU?

charbel1011 Posted at 1-17 14:45
Are u talking about the RC calibration or the IMU?

Sorry, I did't know you were talking about the RC instead of the aircraft. No, unless the you feel the RC is doing squirrely things to your drone.

AG0N-Gary Posted at 1-17 10:47
Not just flat.  It needs to be LEVEL for IMU calibration.

YOU ARE CORRECT!

Maxi3D Posted at 1-17 12:19
I disagree, who knows how many time a drone has been dropped during its shipment from half way across the world. I checked my M2P's IMU when I first got it and found one of the sensors to be a little bit off. Luckily I have access to an one ton granite level table at my work for calibrating instruments.

Lucky you, I bet DJI didn't have it calibrated on a one ton granite level table at the factory