jarmow
lvl.1
Finland
Offline
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Hello. I just recently bought me a Phantom 3 advanced and since it was recommended I upgraded all firmwares before my first flight. The issue I'm having is that calibrating the compass fails every time. Closest metal things are 10 meters away at least, depending on the place I'm at. (I think the manual mentioned 1,5 meters should be ok) There is a TV / mobile link tower some 500 meters away though. Controller is also several meters away, less than 10 though. (Phone I'm using is sony xperia Z5 premium which isn't really supported but seems to work just fine. Tried with ipad mini2 but the video feed lagged too much)
I do the calibration procedure as instructed but then there will be a big warning saying that Compass error, Exit P-GPS mode etc in status window. Controller does say safe to fly on the top though. (and iirc green lights flicker on the rear) However if I then shut down the copter and turn it on again it won't say anything about compass errors. (same if I just start flying without trying to calibrate) If I fly it, it will work just fine most of the time but at some point it will start to drift (rotation+wind obviously) a bit and will give out the same error and drop out of gps mode. It's not a problem as I can fly copters in atti mode too as long as the compass issue won't mess it up. (having working video feed does help, though) So far these in flight errors have been less than 10 seconds and if I leave the switch to P it will usually return to that mode shortly.
So what I'm wondering now is that:
A: How far from metal things and / or tv etc transmitters should I really be? (I'll go to some in the middle of nowhere area next to try calibrating again) Can things like one button on my pants mess it up? (I've tried it with metal free clothing though, same thing)
B: If the compass goes to crap can I still fly normally if I switch to atti mode manually? I've understood yes, but after checking some videos on youtube I'm not sure. (or do some people just try to fix similar issues by using return to home instead of switching to A mode? (and thus having the copter go to random directions because compass is messed)
C: If this happens should I just switch to A mode and land or is it safe to keep it on P mode? Can that cause the flyaways where the copter just hits full throttle and flies somewhere until battery dies or are those some other issues?
D: If I hit return home (or lose connection) and the compass error hits while it is returning what happens? Does it stop and wait or run off into cliffside somewhere far, far away?
E: Does the Dji care do anything if the copter just flies away, never to be found again?
I'm kinda concerned about the compass issue and reliability in general as should it happen it will make all the fancy failsafes useless (especially if the compass doesn't recover at all) and thus I don't really feel comfortable to fly very far. (even in visual range) Not a chance I would fly this over populated areas as some people seem to do after seeing how it can just fail. I will probably get over the initial lack of trust though at some point but this wasn't an optimal start to my multicopter career. (these things should have build in parachutes, really)
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