highaltitude.log.20200614

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[04:49] <SpacenearUS> New position from 03BB10 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=BB10
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[05:31] <OZ1SKY_Brian> gm
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[07:10] <SpacenearUS> New position from 03YO3ICT-PITS after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=YO3ICT-PITS
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[10:04] <SpacenearUS> New position from 03VK2FRRW after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=VK2FRRW
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[11:10] <SpacenearUS> New position from 03KK6BJ-11 after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KK6BJ-11
[11:19] <SpacenearUS> New vehicle on the map: 03PA3FNT_chase - 12https://tracker.habhub.org/#!qm=All&q=PA3FNT_chase
[11:20] <bertrik> Hi all, I updated the ttnhabhubbridge today, fixed an issue with the automatic reconnect to MQTT
[11:21] <PC4L> ahaa.. what do we need to do? update or re-install?
[11:22] <bertrik> git pull and recompile with gradlew assemble
[11:26] <PC4L> can you add some lines on your github page how to update :shame: I´m not sure in what dir to do the git pull.. My directory is now in a sub sub sub map. ~/ttnhabbridge/ttnhabbridge/build/distributions/ttnhabbridge$
[11:26] <PC4L> many many ttnhabbridge ;)
[11:30] <bertrik> hm yes, the main project is called ttnhabbridge, then the sub-project is also called ttnhabbridge ...
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[11:46] <SpacenearUS> New vehicle on the map: 03YO5VEB_chase - 12https://tracker.habhub.org/#!qm=All&q=YO5VEB_chase
[12:22] <SpacenearUS> New position from 03KD0HIP-7 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=KD0HIP-7
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[13:04] <SpacenearUS> New vehicle on the map: 03F4HVZ_chase - 12https://tracker.habhub.org/#!qm=All&q=F4HVZ_chase
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[13:55] <SpacenearUS> New vehicle on the map: 03F5OZK_chase - 12https://tracker.habhub.org/#!qm=All&q=F5OZK_chase
[13:56] <SpacenearUS> New vehicle on the map: 03GOFISH - 12https://tracker.habhub.org/#!qm=All&q=GOFISH
[14:14] <SpacenearUS> New vehicle on the map: 03KF4ZT-11 - 12https://tracker.habhub.org/#!qm=All&q=KF4ZT-11
[15:20] <YO3ICT> YO3ICT-PITS flew today. The Taoglas active GNSS antenna worked very well. Stopped receiving image packets at around ~14000m. Only null packets. Official RPi camera.
[15:21] <PC4L> Hi Eduard, that also means no more pictures on SD card?
[15:22] <YO3ICT> Nope. Only up to that point.
[15:22] <PC4L> Too bad, but you recovered, so it van fly again : thumb up :
[15:23] <YO3ICT> :)
[15:24] <YO3ICT> Bad forest in the area, got a lot of leg scratches
[15:24] <YO3ICT> Near a factory under military rule.
[15:25] <PC4L> how long did it take 4,5 hours ? :)
[15:26] <YO3ICT> around 4 hrs
[15:26] <YO3ICT> initial descent was at Mach 0.5 haha
[15:27] <PC4L> whooo .. after the big bang we saw it comming at 150 km/h
[15:27] <YO3ICT> 168m/s at first
[15:27] <PC4L> almost back to the future
[15:28] <PC4L> so what have we learned today?? cut engine works great?!
[15:29] <YO3ICT> 3rd flight with servo cutdown. Very reliable
[15:30] <PC4L> now finding out what happened to the camera
[15:34] <YO3ICT> camera looks to be working...
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[16:11] <YO3ICT> https://imgur.com/a/TODjWON Why are those left behind....and not in their folder
[16:32] <YO3ICT> Daveake: Any ideas what might have happened? Is there any log to check, besides the GPS and telemetry.txt ?
[16:32] <daveake> sec
[16:32] <daveake> 10p says those stopped updating at the same time, ish
[16:33] <YO3ICT> What's 10p?
[16:33] <daveake> A small bet
[16:34] <daveake> So SD stopped working or the OS stopped writing to the SD. You can tell because there's a .JPG~ file which is a temporary file created by raspistill
[16:34] <daveake> How old is the Raspbian on that SD ?
[16:34] <YO3ICT> https://imgur.com/a/TSWkhVU If it helps. VCC jitter dissapeard when camera stopped
[16:35] <daveake> So failed at coldest point. What make SD card ?
[16:36] <daveake> And what batteries ?
[16:36] <YO3ICT> its the 2019-09-26-raspbian-buster-lite
[16:36] <daveake> yeah that's OK AFAIK
[16:36] <YO3ICT> Toshiba SD card and 3xAA Energizer Ultimate
[16:37] <daveake> Dunno what the min Vin is but I always use 4AAs
[16:37] <daveake> Oh wait this isn't PITS h/w is it ?
[16:37] <YO3ICT> Nope
[16:38] <chris_99> just wondering, if you recovered it, do you have system log files too? once when i made a wildlife camera, i left the camera cable out in the rain and i believe moisture in the cable made the camera stop working
[16:38] <daveake> Right, probably power-related then
[16:39] <daveake> Anyway, as I said, the temporary JPG file shows that SD card writing stopped. So then new images couldn't be stored, and those JPGs couldn't be moved.
[16:39] <YO3ICT> The buck on the Pi is rated up to 100% duty cycle. So theoretically it should work down to 3.3 (with losing the feedback loop as well)
[16:40] <daveake> I've run them down to 2.9V but anywhere near that you risk funnies when the power glitches e.g. when taking a photo, which is what seems to have happened
[16:41] <YO3ICT> I understand. It never got below 4V anyway...so if this was a power issue, it would have recovered?
[16:44] <YO3ICT> It happened on my first PITS flight to have some files left behind, but no temp files(~)
[16:46] <daveake> The JPG~ is because the SD writing stopped during raspistill taking a photo
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[17:04] <YO3ICT> Any possibility of some camera connector issue at cold?
[17:06] <SpacenearUS> New position from 03W5KUB-18 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=W5KUB-18
[17:08] <YO3ICT> If it has any help, last 2 FULL images are a bit overexposed
[17:22] <SpacenearUS> New position from 03K9APX-3 after 033 days silence - 12https://tracker.habhub.org/#!qm=All&q=K9APX-3
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[17:38] <YO3ICT> daveake: And how would this work...something fails within the SD writing but the txt logs are complete?
[17:39] <daveake> Odd
[17:41] <daveake> Those left=behind JPGs are from before SSDV stopped?
[17:41] <daveake> n/m they must be
[17:42] <YO3ICT> Yes
[17:42] <daveake> Well.. . dunno. If those files could be opened then the tracker would have sent one of them and would have moved all of them to a dated folder
[17:44] <PE2BZ> daveake, sorry for hopping on ;-) if the process_image file would have failed on something / anything the FULL folder still would have contained all images, Right ?
[17:44] <YO3ICT> Terribly confused.
[17:46] <daveake> Well it sounds like raspistill got stuck mid-action. If it never returned then there would be no more images of any type. If the SD could not be appended to then there would be no more images either.
[17:46] <daveake> The thing that's different with the log files is that they can be appended to without (for a while) needing any more frames on the SD
[17:47] <daveake> Anyway, bottom line, it couldn't take any more photos.
[17:50] <daveake> raspistill failed mid-image, and that was the end of that.
[17:55] <YO3ICT> Any possibility of detecting this and trying to restart?
[17:57] <daveake> There's a Pi watchdog you could try that
[17:57] <daveake> But if the SD card gets corrupted as a result of the power glitches, then good luck with that
[17:59] <PE2BZ> Wasn´t there a bit of something about the GPU memory on a Pi Zero when running 5 or 8 MP camera´s ? YO3ICT was using an 8 MP camera.
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[18:10] <daveake> There was an OS issue ages ago that only affected the 8MP camera because the images are larger, but the fix was in the code not by increasing GPU memory. Worth a try though.
[18:19] <SpacenearUS> New position from 03PS-76 after 0315 hours silence - 12https://tracker.habhub.org/#!qm=All&q=PS-76
[18:22] <YO3ICT> daveake Is there any way to replay the flight, based on the txt logs on board?
[18:23] <daveake> Yes you can copy gps.txt to something else, then do iirc gps_source=myflight.txt
[18:44] <YO3ICT> daveake If from two takes at cloning the SD card with Win32Imager, one take failes, thats a definite SD card bust or not?
[18:45] <daveake> Doesn't sound good
[18:47] <YO3ICT> thanks. will commence testing tomorrow, will let you know if i find something obvious
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[21:30] <SpacenearUS> New position from 03TRILO after 038 days silence - 12https://tracker.habhub.org/#!qm=All&q=TRILO
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[23:03] <SpacenearUS> New position from 03VK2FRRW after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=VK2FRRW
[23:06] <SpacenearUS> New vehicle on the map: 03KJ6PBS-3 - 12https://tracker.habhub.org/#!qm=All&q=KJ6PBS-3
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[00:00] --- Mon Jun 15 2020