WARNING: long mapping flights might crash QGC and reset HereLink

HereLink
1

We had an issue with a freezed HereLink (showed fastboot on the screen and did not react) which still transmitted SBUS signals recently.

I think I have now narrowed the problem down to an issue reported before here: QGC freezes mid flight in Stable Release - #7 by Albert_martinez

So I want to warn everyone who performs long mapping missions and uses camera feedback that this might result in a dangerous freezing of the remote controller.

You can avoid that by regularily restarting QGroundControl during and before each mission.

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2

will be good an explanation of this issueā€¦

3

Hi Tobias,

How long was your mission which potentially caused this problem?

Sven

4

Hi Sven,

QGC begins to slow down after more than 300 images and freezes somewhere after more than 400 images.

With our system that happens after 10 to 15 mins (~10 ha).

That the system resets completely is not always the case. This was actually the first time during a flight.

We have a workaround now. But I think it is something one should keep in mind.

Tobias

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5

I think it is a memory issue. It would be quite easy to fix but unfortunately this has not been done. I donā€™t understand why. I think this is a serious issue.

6

Hi,

I had something weird happen today. Had a mapping mission on repeat and in solex I believe the app crashed after I had about 200-250 waypoints sequences. I had to close down the app and use my secondary telemetry to trigger a RTL

7

Hi @hextd ,
i do not know if this problem is solved. But the problem relies on QGControl.

I donā€™t know if the Cubepilot developer had already merged this.

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