Replies to This Discussion

Permalink Reply by Sebastian Gralla on January 18, 2011 at 1:23pm

yes, it's directly near the power line of one ESC

the powerline causes a magnetical field which affects the magneto readings

 

solution: move the magneto somewhere else, like on top of APM

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Permalink Reply by geir on January 18, 2011 at 1:25pm

I moved it... the hading still changes when i roll/pithch the quad, with constandt yaw.. And the esc is not powerd right now..

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Permalink Reply by geir on January 18, 2011 at 1:46pm

Still cant fly it :(

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3D RoboticsPermalink Reply by Chris Anderson on January 18, 2011 at 2:52pm

Did you calibrate the magnetometer in the CLI, as instructed in the manual?

 

http://code.google.com/p/arducopter/wiki/CLI

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Permalink Reply by geir on January 18, 2011 at 2:54pm

yes I use the default "components up pins forward". As you can see in the image this should be correct

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Permalink Reply by geir on January 18, 2011 at 3:13pm

yes i did, still no good :( I'll try more tomorrow, but it looks broken :(

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DeveloperPermalink Reply by Randy on January 18, 2011 at 5:10pm

How much does the heading change when you change the roll or pitch by say 45 degrees?  if it's 7~10 degrees or so that's normal.  It's a bit inevitable that it changes that much and it's good enough to do your heading hold and GPS pos hold.

 

Also can you paste the offsets you see from the CLI Menu here?  I strongly suspect that you didn't quite do the calibration correctly so your offsets are off.

 

The kinds of mag problems we see when it's really broken are:

    1. it returns all zeros

    2. it returns very shakey values (sometimes after a delay)

when it's the heading changing when you roll or pitch it's always the orientation or offsets.

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3D RoboticsPermalink Reply by Chris Anderson on January 18, 2011 at 6:32pm

Please post data from your CLI mag setup.

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Permalink Reply by DODY on January 18, 2011 at 3:15pm

I placed the magnetometer on the floor at the top and stuck with double face and I do not have a problem.

Warning, the screws can to make of the vibrations!!!!!

++ DODY

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Permalink Reply by geir on January 19, 2011 at 10:11am

I did the exact same thing i did 10 times yesterday. Today it works fine, strange. But im verry happy, first GPS hold flight 10min ago :)

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