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<blockquote data-quote="Povl H. Pedersen" data-source="post: 21905" data-attributes="member: 4634"><p>I trust GPS and RTH 100% in my drones and planes. So do many others. I am not afraid to fly missions way beyond video/tx signal range. It will come back, unless it as a mechanical error. Friend did a 120km autonomous there and return flight with a plane this summer (60+60km). Over open ocean when out of range.</p><p>The old M6N compass takes forever to lock to sats, but are fine once locked in. And there are more sats than 6 above ground.</p><p>Modern GPS like M8N / or BN-880 locks on in seconds, and gets way more sats. Really good. GPS in spark is super as well.</p><p></p><p>My planes with iNav does not use the compass at all. Knowing a plane always moves forward, it will do fine with GPS only (until the wind is strong enough to blow it backwards). My planes usually needs at least 10-12 m/s airspeed to stay aloft.</p><p></p><p>iNav on quads need the compass, like the DJI drones. And if the compass works, and the drone has a valid home position, it will return if wind permits. If not, take over manual control, go as low as possible (5-10-15ft) and use the controller to go home. Wind at <15ft is likely way less than above. Some fly aways (especially with phone as controller) has been due to going up in too strong winds, getting clrea of the house, and wind just taking it for a ride.</p><p></p><p>Be aware the Spark allows for dynamic home position in tracking mode. So home position can be near its current position depending on how you fumble with the controls on the phone/tablet.</p></blockquote><p></p>
[QUOTE="Povl H. Pedersen, post: 21905, member: 4634"] I trust GPS and RTH 100% in my drones and planes. So do many others. I am not afraid to fly missions way beyond video/tx signal range. It will come back, unless it as a mechanical error. Friend did a 120km autonomous there and return flight with a plane this summer (60+60km). Over open ocean when out of range. The old M6N compass takes forever to lock to sats, but are fine once locked in. And there are more sats than 6 above ground. Modern GPS like M8N / or BN-880 locks on in seconds, and gets way more sats. Really good. GPS in spark is super as well. My planes with iNav does not use the compass at all. Knowing a plane always moves forward, it will do fine with GPS only (until the wind is strong enough to blow it backwards). My planes usually needs at least 10-12 m/s airspeed to stay aloft. iNav on quads need the compass, like the DJI drones. And if the compass works, and the drone has a valid home position, it will return if wind permits. If not, take over manual control, go as low as possible (5-10-15ft) and use the controller to go home. Wind at <15ft is likely way less than above. Some fly aways (especially with phone as controller) has been due to going up in too strong winds, getting clrea of the house, and wind just taking it for a ride. Be aware the Spark allows for dynamic home position in tracking mode. So home position can be near its current position depending on how you fumble with the controls on the phone/tablet. [/QUOTE]
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