Compass set up

Posted by Paul N Braida M.E on March 22, 2016 at 9:13am

Just setting up my APM 2.6 with M8N external GPS/compass. All went well for the calibrate except that the compass seems to be out 180 degrees. Anyone have an idea on this issue?

Thanks

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Replies

  • Paul N Braida M.E March 22, 2016 at 5:56pm

    I was wondering if there was a parameter in Mission Planner to orientate the compass.. There is a small white arrow on the compass that needs to point the same direction as the APM control.  I point this to N it actually tells me it's south on the Mission Planner screen.Do you know what parameter it is or is called?

    • Clifton Hipsher > Paul N Braida M.E March 22, 2016 at 7:18pm

      Its on the Compass Setup screen.

      Set the orientation to Rotation_Roll_180

      Read this page again:  http://copter.ardupilot.com/wiki/common-compass-setup-advanced/

    • John O'Brien > Clifton Hipsher March 23, 2016 at 2:06am

      Rotation Roll refers to the compass upside down - if the compass thinks its simply facing south then the COMPASS_YAW should be 180. There is a drop down menu item in config.

      Just verify that the compass is not upside down.

      Look up Compass Yaw in the Wiki in MP - Ill try and look it up. It would explain your issue tho'

      Cheers

    • Paul N Braida M.E > John O'Brien March 23, 2016 at 5:47am

      Thanks for all your help. I'll poke around and come up with a solution.

  • John O'Brien March 22, 2016 at 5:02pm

    I think you need to check the arrows on the top. If you cant turn it round you can set Compass YAW to 180 in Mission Planner. Good luck

  • Clifton Hipsher March 22, 2016 at 9:57am

    What compass orientation did you use?

    • Paul N Braida M.E > Clifton Hipsher March 22, 2016 at 10:28am

      I did not select any orientation. I just followed the instructions in " initial set up"

      rotated the compass all around till I got maybe 4,000 points then it stopped on it's own and said compass data saved

      I was not aware of any selection. At least it said nothing.

      I'm thinking there maybe a parameter to set this up?

    • Clifton Hipsher > Paul N Braida M.E March 22, 2016 at 10:32am

      This should have been done during initial configuration:

      http://copter.ardupilot.com/wiki/common-compass-setup-advanced/

    • Paul N Braida M.E > Clifton Hipsher March 22, 2016 at 10:45am

      Thanks. I do not recall seeing this screen before. I went through the initial set up procedure and did the "live" compass calibration.

      It finished and said good to go.

      I will try to find this page.

    • Paul N Braida M.E > Paul N Braida M.E March 22, 2016 at 11:49am

      I went through initial set up step by step.  Firmware, magnetometers etc. Next came the compass and I clicked on live calibrate. Immediately it told me to start rotating the compass to fill in all the points which I did until about 4000 points were found then it said done and calibration saved. That's it.

      I will go back through it again.

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