I recently lost my dji mini 2 drone
494 8 2024-8-18
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perplokos
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Cyprus
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Tonight my drone lost its GPS connection while in midair so I was unable to see where it was on the map. Furthermore I was not able to bring it back at my position before I completely lost connection to it. The drone hopefully landed somewhere but I was unable to find it.The area where it probably landed is residential so I was wondering of the likelihood of someone finding the drone and reporting it to the lost items service or something.
What usually happens after one loses their drone in a similar way?How likely do you think it is that someone will find the drone and report it?
2024-8-18
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Sean-bumble-bee
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Impossible to predict the behaviour of people.
However if you post the .txt flight log there maybe a chance of estimating where it is likely to have landed.
Go to
https://www.phantomhelp.com/LogViewer/Upload/
read the instructions lower down the page, retrieve the logs from your phone, upload the last one to that website and post the resulting URL here.
2024-8-18
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perplokos
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Thank you for the informative answer. Here is the kmz file of the flight recording of the drone file:https://file.io/iUa8HaKYCfPE .  How much can we infer from the information there?
When does it automatically start to land? How far could it have gone from its last known location?
2024-8-18
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Sean-bumble-bee
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perplokos Posted at 8-18 13:15
Thank you for the informative answer. Here is the kmz file of the flight recording of the drone file:https://file.io/iUa8HaKYCfPE .  How much can we infer from the information there?
When does it automatically start to land? How far could it have gone from its last known location?

"How much can we infer from the information there?"
Probably very little.

What is needed is the ,txt  flight log,presumably
"DJIFlightRecord_2024-08-18_[20-10-28].txt"
Upload that file to Phantomhelp and post the URL here  or upload the file to the file.io page.
2024-8-18
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perplokos
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Cyprus
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Sean-bumble-bee Posted at 8-18 15:43
"How much can we infer from the information there?"
Probably very little.

Here it is https://www.phantomhelp.com/LogViewer/20240819WT67BCIRR40X5GSCD1NBEVM6YYAQN9H0 .
The previous file was the same info exported to kmz
2024-8-18
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Sean-bumble-bee
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Have a look here
34.71329427, 33.02747506
I think the GPS is of sufficient quality to be reliable but, with only 8% battery remaining, the drone had a fair height to lose, I think it was at approximately 440ft AG,.
I don't understand why the log shows it climbing when there is no throttle input, I would have thought the critical battery would have over ridden the go home command.

Whether or not it would have made it down to the ground before the motors stopped I do not know, in addition as the charge level dropped it would become more susceptable to wind and if it lost GPS it descended it would have switched to ATTI mode and been blown by the wind.

Airdata reports the wind as 3.3m/s from 260deg, given the nature of the flight I don't know how accurate that is.

2024-8-19
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perplokos
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Sean-bumble-bee Posted at 8-19 02:08
Have a look here
34.71329427, 33.02747506
I think the GPS is of sufficient quality to be reliable but, with only 8% battery remaining, the drone had a fair height to lose, I think it was at approximately 440ft AG,.

I went to that place today and I think if it did emergency landing there it would have easily made it to the ground. The field there is somewhat large and sloppy so I didn't search it thoroughly but if it tried to land there it probably did rather successfully. What I am concerned is that it may have tried to reach the home point and moved further from there. What is the likelihood of that?
2024-8-19
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Sean-bumble-bee
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perplokos Posted at 8-19 03:26
I went to that place today and I think if it did emergency landing there it would have easily made it to the ground. The field there is somewhat large and sloppy so I didn't search it thoroughly but if it tried to land there it probably did rather successfully. What I am concerned is that it may have tried to reach the home point and moved further from there. What is the likelihood of that?

The RTH height was set at 210m, 689ft.
When the signal was lost for the last time the drone was at 361ft, 110m, meaning it had 100m still to climb before it started to attempt to fly home.
The battery percentage was critical, I am surprised it  was not in "forced landing" mode.
It was climbing at 3m/s meaning it had at least 33sec to reach RTH height with a dying battery.
The battery averaged around 13.8seconds per percent of charge and its ability to climb should , soon, have been restricted by lack of battery power.
To be honest I doubt it reached RTH height and therefore would be surprised if it attempted to fly towards home from there.
JJB* might be better able to judge that but that is my thinking.
Personally I think it that if it isn't at those coordinates then it will be down wind of those coordinates not closer to home.

2024-8-19
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DJI Gamora
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Hi there,

Thank You for reaching out. We are truly sorry for the inconvenience you are experiencing.

You can follow the steps in this site, and if you are till unable to retrieve the lost drone it will fall under flyaway case and you can submit a flyaway case.
Flyaway Tips: What to Do When Drone Flies Away

I hope this information has helped to clarify your inquiries. If you have any other questions, kindly let us know. Thank You!
2024-8-19
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