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DJI Spark Compass Calibration
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<blockquote data-quote="msinger" data-source="post: 74174" data-attributes="member: 18"><p>And now I guess you can see why I was questioning your reps.</p><p></p><p></p><p>The only purpose of compass calibration is to measure the components of the aircraft's magnetic field so that they can be subtracted from the total measured magnetic field. Rotating the three-axis magnetometers allows the aircraft's flight controller to separate the surrounding magnetic field from the magnetic field of the aircraft itself. It's able to separate them since the aircraft's magnetic field remains constant <em>(in the frame of reference of the magnetometers)</em> while the surrounding magnetic field rotates.</p><p></p><p></p><p>It's necessary when:</p><ul> <li data-xf-list-type="ul">Compass interference values are out of whack or DJI GO is displaying a compass error <em>(check area for magnetic metal objects before calibrating)</em><br /> <br /> </li> <li data-xf-list-type="ul">The Spark is circling in flight while hovering in place <em>(also check for other possible causes)</em><br /> <br /> </li> <li data-xf-list-type="ul">New metallic equipment has been attached or removed from the Spark <em>(e.g. GPS tracker)</em><br /> <br /> </li> <li data-xf-list-type="ul">If you just degaussed your compass <em>(don't degauss the compass unless instructed)</em></li> </ul><p></p><p></p><p>Frequent calibrations will do no harm as long as you're calibrating in a location where the compass is not being negatively affected by some type of nearby magnetic metal source. Recalibrating the compass is a waste of time unless you're calibrating because of one of the four listed bullet points above.</p></blockquote><p></p>
[QUOTE="msinger, post: 74174, member: 18"] And now I guess you can see why I was questioning your reps. The only purpose of compass calibration is to measure the components of the aircraft's magnetic field so that they can be subtracted from the total measured magnetic field. Rotating the three-axis magnetometers allows the aircraft's flight controller to separate the surrounding magnetic field from the magnetic field of the aircraft itself. It's able to separate them since the aircraft's magnetic field remains constant [I](in the frame of reference of the magnetometers)[/I] while the surrounding magnetic field rotates. It's necessary when: [LIST] [*]Compass interference values are out of whack or DJI GO is displaying a compass error [I](check area for magnetic metal objects before calibrating)[/I] [*]The Spark is circling in flight while hovering in place [I](also check for other possible causes)[/I] [*]New metallic equipment has been attached or removed from the Spark [I](e.g. GPS tracker)[/I] [*]If you just degaussed your compass [I](don't degauss the compass unless instructed)[/I] [/LIST] Frequent calibrations will do no harm as long as you're calibrating in a location where the compass is not being negatively affected by some type of nearby magnetic metal source. Recalibrating the compass is a waste of time unless you're calibrating because of one of the four listed bullet points above. [/QUOTE]
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DJI Spark Compass Calibration