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Permalink Reply by Eoin on June 4, 2011 at 7:25pm

Hi ip9,

I just made the transformation today from + to X. I have rotated my APM to face forward and it is my understanding that this is necessary. In terms of specifying the configuration, you can do this easily in the setup mode of the CLI from the APM planner or Arduino.

Hope this helps

Eoin

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3D RoboticsPermalink Reply by Chris Anderson on June 4, 2011 at 9:06pm

ip9: you load the quad firmware and set + or x in the Mission Planner setup. This is all in the manual.

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Permalink Reply by estebanflyer on June 28, 2011 at 8:03pm

My APM is facing between the front motors, and I update the firmware to x frame. When the GPS locks, showing my house on Mission Planner, the airplane silhouette is facing 45 degrees to the left, even though my quad is facing 0 degrees. Does this mean the silhouette on Mission Planner is off or the quad will fly wrong? thank you!

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3D RoboticsPermalink Reply by Chris Anderson on June 28, 2011 at 8:15pm

No, that's just cosmetic. The Mission Planner doesn't know if you're flying x or +.

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Permalink Reply by estebanflyer on June 28, 2011 at 9:21pm

Ah! Interesting!

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Permalink Reply by Niklas Goddemeier on June 29, 2011 at 12:46am

Actually, this is what I see as well. As the APM is always pointing forward, no matter of the configuration, the compass also should point in the same direction. In my understanding, therefore the MP does not need to consider the configuration and the heading should be ok.

I was told by Chris that the heading of the compass might be off of few degrees due to some local influences on my board. As far as I understand, absolute orientation is not that important. It is important that the compass works correctly for relative rotations.

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