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Hyperlapse Waypoints Not Consistent
1775 12 2023-3-8
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fansa2641d2f
lvl.2
Flight distance : 586745 ft
United States
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I am flying Mavic 3 Classic with RC Controller.. Getting very frustrated.. I have benn trying for the last week to use Hyperpalse with waypoints.. But the results have been very inconsistent.. I do a hyperlapse using the waypoints option..in the daytime.. Everything works fine.. I save the hyperlapse for later use.. I then come back to the same location in the evening  And I launch the drone from the exact same spot.. I launch the drone .. Recall the previous saved hyperlapse from earlier that day.. But the drone seems to not return exactly to the same first waypoint as from earlier.. It is higher and off by what looks to be about 15 or 20 yards from the original starting waypoint??  What is causing this to be that far off ?? I have been very careful to launch the drone from the exact same spot.. ( i have it marked) Anyone have any ideas on this??  Does it have anything to do with the amount of light?? I launced the second time right as it got dark??? Any feedback is appreciated..
2023-3-8
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Mobilehomer
First Officer
Flight distance : 18150351 ft
United States
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I run the same mission several times a week. The altitude is always spot on. Waypoint one can be off by a little bit. This is GPS tolerance. Check the specs on your drone to find out what they are.
2023-3-8
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fansa2641d2f
lvl.2
Flight distance : 586745 ft
United States
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Mobilehomer Posted at 3-8 17:55
I run the same mission several times a week. The altitude is always spot on. Waypoint one can be off by a little bit. This is GPS tolerance. Check the specs on your drone to find out what they are.

Its way to high.. Maybe 15 or 20 feet higher that it should be..  If you look at the first hyper lapse and the second hyper lapse.. it is  really not close.. This has happened several times this week..
2023-3-8
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fansa2641d2f
lvl.2
Flight distance : 586745 ft
United States
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fansa2641d2f Posted at 3-8 17:58
Its way to high.. Maybe 15 or 20 feet higher that it should be..  If you look at the first hyper lapse and the second hyper lapse.. it is  really not close.. This has happened several times this week..

I tried another Hyperlapse ( using waypoints) again today..First part day, second part night.. Different location , downloaded all the latest firmware for Drone and Controller.. Very careful to launch drone from exact same spot and elevation.. Same result.. Second flight does not match first flight.. This feature DOES NOT WORK to do REPEATABILITY !!!!  I can understand that there could be a little wiggle room.. but it is off.. Definatley to high.. and the GPS position is slightly different.. I am trying to do 2 identical flights and do a day to night transition in post... Just not matching up.. Hey DJI, any help here????.. I am pulling my hair out.. And this does not work ( NO CONSISTENT REPEATABILITY) !!
2023-3-9
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DJI Gamora
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Hi, fansa2641d2f. Thank you for reaching out. The light has nothing to do with it. The points of the waypoint function are recorded according to the GPS physical location, due to the gap in the map, the GPS accuracy of the aircraft and the accuracy of the barometer (around a 10-meter gap) have gap changes over time, so there is a certain gap between the actual flight position and the waypoint set position. Hope this answers your questions and we're sorry for the inconvenience.

2023-3-9
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fansa2641d2f
lvl.2
Flight distance : 586745 ft
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OK.. Thanks.. So there you have it people.. I was correct and this is confirmation that it does not work with the accuracy needed to fly multiple flights on the same path...There is no repeatability of using Waypoints !!  Hopefully this helps someone else from wasting a bunch of time..
2023-3-10
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djiuser_dOqxS7MfMKQr
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Flight distance : 2450135 ft

Greece
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I have the same problem with my Air 3 and i'm really upset! Sometimes is changing angle of view too or altitude difference about 1-3 meters and sometimes the starting position is wrong about 20 meters! I always take off from exactly same spot.
2023-11-11
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digibud
Second Officer
Flight distance : 8043855 ft
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United States
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     I am familiar with GPS and barometric  variations and when I began using Waypoints I was not at all shocked or surprised by what I experienced. I never even gave it a second thought but I can understand how many people would expect greater accuracy.  The barometer changes regularly so we can or should understand that changes to that would affect the accuracy from day to day and even from hour to hour. With regard to GPS altitude the triangulation of an object on the surface can be pretty accurate but GPS satellites can't provide the same accuracy with regard to the height of an object.  The position of the satellite group from day to day and over several hours will cause significant variations in the GPS reading for the height of any object. This is not a fault of DJI, it's a matter of triangulation. We should be able to expect a decent accuracy with regard to the horizontal position of our drones but the vertical accuracy will always be a crap shoot and that reflects my experience.
2023-11-14
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Clouseau
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Flight distance : 1138192 ft
Denmark
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digibud Posted at 2023-11-14 10:11
I am familiar with GPS and barometric  variations and when I began using Waypoints I was not at all shocked or surprised by what I experienced. I never even gave it a second thought but I can understand how many people would expect greater accuracy.  The barometer changes regularly so we can or should understand that changes to that would affect the accuracy from day to day and even from hour to hour. With regard to GPS altitude the triangulation of an object on the surface can be pretty accurate but GPS satellites can't provide the same accuracy with regard to the height of an object.  The position of the satellite group from day to day and over several hours will cause significant variations in the GPS reading for the height of any object. This is not a fault of DJI, it's a matter of triangulation. We should be able to expect a decent accuracy with regard to the horizontal position of our drones but the vertical accuracy will always be a crap shoot and that reflects my experience.

I'm experiencing the exact same issues with my Mavic 3 Classic.
According to the specs, the drone should be accurate to within 3 feet vertically and 10 feet horizontally.
It's not even CLOSE to that! Despite calibrating and taking of at the exact same location, every time.
I took a job filming the progress of a construction  and am struggling to bring myself to charge for the resulting video.
Worse than the huge drifts of the drone itself, is that it can’t event orient itself towards the POI consistently, making it close to impossible to join the footage, even with excessive cropping. Sometimes the POI is centered in the frame, sometimes waaay to the left or right – even if I fly the waypoint mission several times back to back on the same day, it’s positioning and orientation shifts each time.
When confronting DJI with the appalling gap between the specs and the actual performance, the supporter – after conferring with the “engineers”, said it was because the waypoints – get this – WASN’T DRAWN IN A PERFECT CIRCLE AROUND THE POI!!!
5-22 07:32
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AlexCarboni
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Italy
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today I had the same problem that you have encountered
I use the mavic3 classic
I agree that the barometer and the gps can have differences in reading during a day
but the problem is in the dji fly app
I saved a waypoint mission to perform a hyperlaps
point A 40m height
point b 50m height
point c 60 m height
this was marked on the telemetry, the information that we have on the remote control screen regarding the height and distance.
but then ... when the drone returns to perform the mission
it goes to point a and matches on the map and the distance is the same
but the height is visibly different and even on the remote control screen the telemetry only reports 30m height.

so it is not a barometer problem, but a real positioning problem regarding the height that also on the remote control monitor is reported differently.

on the saved waypoint it was 40m
while when the drone performs the mission the second time on the monitor it reads 30m height

if it had been a barometer problem
the drone would have positioned itself on a different height but the telemetry on the remote control monitor would have reported the same height 40m

instead even on the remote control monitor there are two different heights reported ... first flight waypoint at 40m, second flight same waypoint at 30m ....
the drone and the flight system know they are at two different heights

dear dji this is a clear bug of the system rather than different readings of the barometer
8-22 16:33
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fansa2641d2f
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Flight distance : 586745 ft
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AlexCarboni Posted at 8-22 16:33
today I had the same problem that you have encountered
I use the mavic3 classic
I agree that the barometer and the gps can have differences in reading during a day

Makes sense.. what you are saying.. DJI blamed it on Barometer...Did you launch the drone from the exact same position?  
8-22 16:37
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GuiG
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Flight distance : 887457 ft
Netherlands
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I have the same problem but with a Mavic 3 Pro. I stopped using Hyperlapse waypoints because my Mini 3 Pro wanted to start every mission directly at ground level or max altitude. At the same time, it flew precisely the same position every week with a tolerance height of a few meters.
It's really annoying. I reported it last year, and nothing has been done about it—and probably won't. It has something to do with the barometer and the Hyperlapse module.
I now fly it by hand, which is much less accurate and renders my project useless.

In the end, it's a minor problem. I do not use hyperlapses for the majority of my work, but for this specific one, I wanted the better Hasselblad camera.

So I hope the Mavic 4 Pro have RTK. and a better 3x and 7x zoom lens. That would help a lot. And maybe even RTK out of the box instead as an add-on module.
8-28 11:33
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djiuser_ZRYtNSaBxuL3
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Indonesia
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For me the diferent gap for position is not realy ptoblem, the very frustated problem is the high, for example at 6 am the drone start waypoint at 30m high, but the same location use the same waypoint at 8pm the drone change the high and become 40m,because i am very curious then i try again at 6am next day, the result is the high 50m,
First way point 30m
2nd waypoint 40m
3rd waypoint 50m
8-31 16:37
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