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Help! Almost lost it in ATTI mode!
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<blockquote data-quote="Dronason" data-source="post: 14099" data-attributes="member: 553"><p>Back to the original question, now, thanks to [USER=787]@BudWalker[/USER], we have more data.</p><p>As previously said, your compass seems to change a lot. As you where high in altitude, the compass output should not change that much when you rotate. it change from 1600 to 1900. </p><p></p><p>In blue first, there was already some error between the compas and the yaw position calculated by the Spark flight controller. In a second rotation maneuver there was again some error, but not enough to trigger an error. Finally in red, again an error and this one triggered the ATTI mode. During the ATTI mode you where able to stop its drift and the error becomes low enough to stop the ATTI and be back to GPS control.</p><p>[ATTACH=full]1322[/ATTACH] </p><p></p><p>So the compass need to be recalibrate in an open area, better in a remote area.</p><p>You would also do an IMU calibration as it is quick to do.</p><p>If it happen again, there is also the possibility that the compass sensor has a problem.</p></blockquote><p></p>
[QUOTE="Dronason, post: 14099, member: 553"] Back to the original question, now, thanks to [USER=787]@BudWalker[/USER], we have more data. As previously said, your compass seems to change a lot. As you where high in altitude, the compass output should not change that much when you rotate. it change from 1600 to 1900. In blue first, there was already some error between the compas and the yaw position calculated by the Spark flight controller. In a second rotation maneuver there was again some error, but not enough to trigger an error. Finally in red, again an error and this one triggered the ATTI mode. During the ATTI mode you where able to stop its drift and the error becomes low enough to stop the ATTI and be back to GPS control. [ATTACH=full]1322[/ATTACH] So the compass need to be recalibrate in an open area, better in a remote area. You would also do an IMU calibration as it is quick to do. If it happen again, there is also the possibility that the compass sensor has a problem. [/QUOTE]
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Help! Almost lost it in ATTI mode!