Phantom Drifting

[campingtomz]

now I know that sounds like the next cool drone sport, but I am having issues with my drone drifting to one side. i turned off compass mode. this was suggested in another post, but it still drifts. i ended up replacing the motors because one of the shafts was bent. i thought this was the issue but apparently not.

im wondering if anyone has any idea?
more info its a phantom fc40, the compass doesnt work right, but thats another issue all on its own.

 

[Fplvert]

Drifting is usually an indication that the compass needs calibration, so I think that the compass is the problem.

 

[IflyinWY]

About all I know to do is buy a new compass, $20 give or take, comes attached to a new landing gear in some cases.

OR

Do a good Compass Calibration and make a note of the numbers you will find in the NAZA assistant.
They should be MOD =1400 +/- 200, and the XYZ numbers should be ZERO +/- 300.
Take a look at this video, I'm not suggesting you do it, but if you believe your compass is shot, it can't hurt anything.

Go here and click "Fix the compass"; there are some other helpful pages as well. www.wynotweb.com

AND

Once you've eliminated any possible compass issue, I suggest doing an Advanced IMU Calibration. The tricks with this calibration is to make sure the bird is perfectly level, cool, and allowed to remain perfectly stationary throughout the calibration.

I think crashing them upsets the inner workings of the NAZA module. Mine still flies well, but not like it did when it was new. I crashed it a lot when it was new...

 

[campingtomz]

my compass is x: 65, y: 446, z: 765, mod: 418
i do the manual calibration the turning of the phantom and that seems to work. but as soon as i turn it off and then power it back on, it flashes yellow red

 

[Marlin009]

Those are not good numbers. I don't think the compass "is another issue all on its own".

It seems to me bending a motor shaft would take a pretty good hit. An IMU cal is definitely in order.

 

[campingtomz]

well the motor was replaced, and i did the IMU cal a few times, it seems like it just doesnt want to work.
i tried the magnet fix from the video, but it each time it just returns to around those numbers

 

[Marlin009]

What do you mean it doesn't work? Do you get an error? It won't effect the compass values.

 

[campingtomz]

the magnet fix from the video will change the values while the magnet is around the compass, but as soon as i move the magnet away the go back to the values from the previous post. the IMU cal completes with no errors, but it doesnt fix the compass values, also when i power cycle the phantom it will continue to flash yellow and red.

ive done the manual cal where you physiclly move the phantom around its axis, this will produce a green steady light, but when i power cycle it will go back to blinking red and yellow

 

[Marlin009]

I don't know the FC40 lights. Should be in the manual or online.
Sounds like your compass might be toast.