Anyone ever get too close to a big magnet??

Howcroft22 · Mar 4, 2018

I had a recent post and put up some screen recordings of my Mavic acting up. I’ve been getting all kinds of I MU and compass warnings. almost lost the bird. After trying to recalibrate everything and doing everything I can think of under the sun. I noticed I had large magnetic parts tray on the floor of my truck. I totally forgot it was there because it was under piece of paper. Anyways I put the controller next to it. and got a warning saying move away from magnetic interference. I know I had my Mavic on the floor the other day and I believe the magnet did something to my drone. It always wants to fly crooked As well. Anyone have any advice how to deal with this? I believe the magnet screwed up the compass somehow so calibration won’t do fix it. I’ve read about people degaussing. But not sure if that is the right way to do it and if I could make it worse.

The Moment Thinker · Mar 4, 2018

Honestly. I wouldn’t recommend doing that. It might cause permanent damage.

Howcroft22 · Mar 4, 2018

I’m hoping what’s done isn’t permanent. I just got this thing back a couple days ago for repair.

sar104 · Mar 4, 2018

It's unlikely that the compasses were directly affected by the magnet, but it is possible that other ferromagnetic components (e.g. screws) were magnetized enough to affect the compass readings. You could try a compass calibration to zero out those components, but if the acquired field strength is too large then degaussing is the way to go.

Howcroft22 · Mar 4, 2018

sar104 said:
It's unlikely that the compasses were directly affected by the magnet, but it is possible that other ferromagnetic components (e.g. screws) were magnetized enough to affect the compass readings. You could try a compass calibration to zero out those components, but if the acquired field strength is too large then degaussing is the way to go.

I tried compass cal a couple times. Did nothing. Still flys crooked and getting gps and compass warnings.i actually did everything just to be sure. IMU, compass. Gimbal, and RC. Didn’t fix. Also updated to newest firmware

sar104 · Mar 4, 2018

Howcroft22 said:
I tried compass cal a couple times. Did nothing. Still flys crooked and getting gps and compass warnings.

If you want to post a flight log from one of those then it might shed some light on the problem. Best of all would be an aircraft DAT file, if you can get it, since those include the raw magnetometer data for both compasses.

Howcroft22 · Mar 4, 2018

sar104 said:
If you want to post a flight log from one of those then it might shed some light on the problem. Best of all would be an aircraft DAT file, if you can get it, since those include the raw magnetometer data for both compasses.

Can I do that from an iPad?

sar104 · Mar 4, 2018

Howcroft22 said:
Can I do that from an iPad?

I don't think so - you need to run DJI Assistant 2 from a Mac or PC.

How to retrieve a V3 .DAT File from the AC

Howcroft22 · Mar 4, 2018

sar104 said:
I don't think so - you need to run DJI Assistant 2 from a Mac or PC.

How to retrieve a V3 .DAT File from the AC

Great. I have no access to a computer. And if I used someone else’s it would have to have iTunes. What a pain. Why can’t they just make life easy.

sar104 · Mar 4, 2018

Howcroft22 said:
Great. I have no access to a computer. And if I used someone else’s it would have to have iTunes. What a pain. Why can’t they just make life easy.

No - it would not need iTunes - just the DJI Assistant app.

Howcroft22 · Mar 4, 2018

Hope someone chimes in with experience around magnets.

droneuser · Mar 4, 2018

there is a post on here a guy that bought one of those ( I forgot the name of it) let me see if I can find that post

Howcroft22 · Mar 4, 2018

droneuser said:
there is a post on here a guy that bought one of those ( I forgot the name of it) let me see if I can find that post

It’s the thing I mentioned. But it’s probably just a gimmick.

droneuser · Mar 4, 2018

yes but a guy on here is getting one in a couple of days and he will post if it helps him

droneuser · Mar 4, 2018

grrrrr I cant find that post

Howcroft22 · Mar 4, 2018

droneuser said:
grrrrr I cant find that post

I’m sure I already saw it. I did a search before posting and there wasn’t anything that helped anyways.

droneuser · Mar 4, 2018

well once he gets it and posts the info on what he finds! but personally I think there is some effect on the aircraft when it place close to a magnet the reason why I think this is cause there is some metal in the mavic that could be come magnetized

Howcroft22 · Mar 4, 2018

droneuser said:
well once he gets it and posts the info on what he finds! but personally I think there is some effect on the aircraft when it place close to a magnet the reason why I think this is cause there is some metal in the mavic that could be come magnetized

Definitely.

droneuser · Mar 4, 2018

lets hope that guy posts back what he finds out! cause I want to know too...

Cuervo · Mar 4, 2018

I have to get well away from my truck before the 'Magnetic Disturbance' warning quits, also remove my cell flip phone from any pocket close to the controller.