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Did I nearly crash my drone the first week?
421 13 2020-3-15
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Bloodied_Mini
Second Officer
Flight distance : 145361 ft
Malaysia
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Just checking with experts here, I've just learnt to review my logs I found this log to be very odd:

https://www.phantomhelp.com/LogViewer/WJWESC4ZRUP4R1OQCRDI


In actual, I took off at the back of the row of houses (where I landed), was there to inspect the roof. Done my inspection, landed where I took off. But upon reviewing the logs, it seems I had very poor GPS, and the drone tend to think my home point is very-very far away. If I've lost connection then and there, will this be considered a fly-away?

Take note: I got my drone on 1st Feb, 8th Feb is just my 7th day with the MM.
2020-3-15
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DaMa
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Crazy, are you sure you had no contact with the Enterprise – "beam me up Scotty"...?  Houston we have a problem...
2020-3-15
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JJB*
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Hiya,

Your flight started in ATTI and OPTI, HP was recorded at 11seconds ; 4 bars for reception needed.
Best to wait for good GPS lock; enough satelliets and 4 bar for reception to get a HP set.
Why did you think that your HP was far away from your start point?

cheers
JJB

analysis1.png
analysis2.png
2020-3-16
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Labroides
Captain
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Australia
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the drone tend to think my home point is very-very far away.
Your flight data shows the drone landed  just 15 feet from where it recorded its home point.
That's because your drone recorded its home point about 15 feet from the launch spot.
That's not a long way.

If I've lost connection then and there, will this be considered a fly-away?
There's no such thing as a "flyaway" and your drone didn't fly away.

2020-3-16
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DaMa
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Apparently he didn't fly 400 m?
Unbenannt-1.jpg
2020-3-16
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JJB*
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DaMa Posted at 3-16 01:52
Apparently he didn't fly 400 m?

nope, just max 14 meter away from HP.
2020-3-16
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Labroides
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DaMa Posted at 3-16 01:52
Apparently he didn't fly 400 m?

For the first 4.6 seconds, the GPS location data was showing very wrong locations and the flight controller recognided this and assigned GPS Health = zero because the data was unreliable.
It's those locations that are shown in the map, but the drone never flew there.
The flight controller did not trust any GPS location data until 0:10.8.

2020-3-16
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Bloodied_Mini
Second Officer
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Malaysia
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Thanks everyone for your feedback. Was a newbie and still is. Quite scary when I reviewed the logs. Now I check drone direction, homepoint and wind directions before I fly.
2020-3-16
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Bloodied_Mini
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JJB* Posted at 3-16 01:18
Hiya,

Your flight started in ATTI and OPTI, HP was recorded at 11seconds ; 4 bars for reception needed.
[Image]

I thought the flag was the homepoint.
Screenshot_20200316-185844_Samsung Internet.jpg
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JJB*
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Bloodied_Mini Posted at 3-16 02:59
I thought the flag was the homepoint.

Nope, the mark H

PhantomHelp is only reliable if GPS signals and reception are in good order.
With 'zero' for reception GPS data/logging is not accurate.

cheers
JJB
2020-3-16
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Bloodied_Mini
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JJB* Posted at 3-16 03:40
Nope, the mark H

PhantomHelp is only reliable if GPS signals and reception are in good order.

Ok, thanks for the guidance.
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JJB*
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Bloodied_Mini Posted at 3-16 04:56
Ok, thanks for the guidance.

My pleasure, see this > https://forum.dji.com/forum.php?mod=viewthread&tid=203659

Happy many landings,
cheers
JJB
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DaMa
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Labroides Posted at 3-16 02:15
For the first 4.6 seconds, the GPS location data was showing very wrong locations and the flight controller recognided this and assigned GPS Health = zero because the data was unreliable.
It's those locations that are shown in the map, but the drone never flew there.
The flight controller did not trust any GPS location data until 0:10.8.

OK, I also say thx. but it's crazy anyway ...
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Labroides
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DaMa Posted at 3-16 09:09
OK, I also say thx. but it's crazy anyway ...

It's not crazy .. he had poor GPS for a while and the Flight controller realised this and did not accept the data.
But Phantomhelp shows all the data, even what was not used because the flight controller rejected it.
2020-3-16
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