Replies to This Discussion

3D RoboticsPermalink Reply by Chris Anderson on June 21, 2011 at 5:56am

You have have seen the "declination" command in the CLI setup menu. I've updated the manual to show better how to use it.

3D RoboticsPermalink Reply by Chris Anderson on June 20, 2011 at 1:14pm

See my comment below (previous version was truncated)

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Permalink Reply by Brett Horton on June 29, 2011 at 4:53am

K, got the declination in, but ALL references to offsets, utilize the arducopter software to correct the offsets. When I test using the cli and compass, my offsets do move around quite a bit.

Permalink Reply by Brett Horton on June 20, 2011 at 7:42am

I can enable the compass, do the testing (looks good) through terminal. Utilizing Happykillmore's GCS the A/V's yaw is very stable for tens of minutes at a time. But again flying, the A/V just circles, at least for 10 seconds, then I switch back to manual...

Update, After I move the A/V in yaw the compass shows incorrect positioning including drift..

 

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3D RoboticsPermalink Reply by Chris Anderson on June 20, 2011 at 7:52am

John, if you answer my questions above I will be able to help you.

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Permalink Reply by Andke on March 5, 2012 at 4:24am

Arduplane 2.28 - I recognize all the symptoms you have, as my own problems.

have fun with the log: it even flies backwards..  http://code.google.com/p/ardupilot-mega/issues/detail?id=537&q=...

So - did you find a solution ?

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DeveloperPermalink Reply by Randy on March 5, 2012 at 5:17am

Andke,

     I've updated that issue you've linked above with some details on what to do.  Also the mag wiki where you commented as well :-).

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Permalink Reply by Andke on March 5, 2012 at 5:29am

thank you - do you have any other ideas ? - long into the values are not 0 anymore, but how can I know if/when the auto-tuning works ?

may it be that it tunes *very* slowly ?

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DeveloperPermalink Reply by Randy on March 5, 2012 at 5:35am

The only way I know they're done is when the values stop changing much.  When they're still down in the low single digits (like -1 or 3) it's definitely not done yet.  It's got a long way to go.  Best to try waving it around in your hand while looking at that status tab.  By waving it around you can get them to change a lot more quicklky.

 

There's really nothing better about changing them very slowly I think.

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Permalink Reply by Andke on March 5, 2012 at 5:45am

thanks

-So no GPS for "learning" needed - it does not learn from proper GPS heading - vs compass indication (once I believed I needed to fly a lot in big circles or at steep angles/turns for it to "learn")

- I'll do so lots of "waving" - in all directions, at all angles, 

- I guess the values can be saved and re-used after a firmware upgrade.(?)

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DeveloperPermalink Reply by Randy on March 5, 2012 at 5:53am

Tridge modified the parameters code so that the mag offsets can be manually overwritten from the mission planner.  This new feature is only in trunk but it will be released and available via the mission planner once we push out another arduplane release.  I'm not sure exactly when that will be for arduplane (Arducopter should be released in about a week or so if all goes well)...I'd guess within a month but not really sure really!

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Permalink Reply by Andke on March 5, 2012 at 5:57am

"... so that this can be done now..."   is it the "save/restore" you are commenting on or other part. ?

BTW: how many minutes of "waving" the plane should I expect ? - (- just to avoid looking like an idiot any longer than necessary)  :)   

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