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Compass Reading on the DJI GO 4 App?
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<blockquote data-quote="Silversand" data-source="post: 21998" data-attributes="member: 3411"><p>...I have 2 phones and a tablet with magnetometer apps (I use these for other readings, not drone-related); wouldn't a magnetometer check (on a nice level surface near where you'll launch the drone) be beneficial? And, if beneficial, what reading would be a tolerable "field" to safely take off within?</p><p></p><p>....further to the above: now, the Spark's internal megnetometer. The reason why you would calibrate the quad (at a different launch site), is that depending on the patch of ground (and z space) you are launching from/up into, the calibration process would correct for different flux density/ies around your new patch of launch ground (this differing flux density would affect your yaw, pitch and roll (on edit: <em>and cardinal orientation</em>) as your quad crosses the different flux density x, y z at your new launch site, of course)...so, the trick is to calibrate your quad correctly (spinning it properly within its calibration timeframe)</p><p></p><p>So, concluding, you never know if your new launch site is perched over a seam of hematite, old dump site of rusting steel under the soil, or "other"; this is why I would do a quick check with a magnetometer phone app always before launching a drone at any site I have never flown at previous...</p></blockquote><p></p>
[QUOTE="Silversand, post: 21998, member: 3411"] ...I have 2 phones and a tablet with magnetometer apps (I use these for other readings, not drone-related); wouldn't a magnetometer check (on a nice level surface near where you'll launch the drone) be beneficial? And, if beneficial, what reading would be a tolerable "field" to safely take off within? ....further to the above: now, the Spark's internal megnetometer. The reason why you would calibrate the quad (at a different launch site), is that depending on the patch of ground (and z space) you are launching from/up into, the calibration process would correct for different flux density/ies around your new patch of launch ground (this differing flux density would affect your yaw, pitch and roll (on edit: [I]and cardinal orientation[/I]) as your quad crosses the different flux density x, y z at your new launch site, of course)...so, the trick is to calibrate your quad correctly (spinning it properly within its calibration timeframe) So, concluding, you never know if your new launch site is perched over a seam of hematite, old dump site of rusting steel under the soil, or "other"; this is why I would do a quick check with a magnetometer phone app always before launching a drone at any site I have never flown at previous... [/QUOTE]
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Compass Reading on the DJI GO 4 App?