PAW Crash after takeoff

[a.alexeev.p]

Thank you! I will check. I remember trying to replay a file, replay not working and me deleting it… but it might have been a different one. Otherwise I’ll make sure to save the track if that happens again.

I’m actually quite keen to investigate the wifi matter as I have a feeling (and that one is super subjective) that whenever I replay I see more traffic in SD than in real life.

In general what would you recommend if find track files being perfectly ok? I have seen some recommendations in older threads to try use FLARM setting in SD instead of PAW due to it using TCP

[Admin]

UDP is a better system for this type of data than TCP
TCP employs retries, totally useless in data that requires no latency
So I assume you connect using PilotAware

Are you using android or ios ?
What is your device ?

Thx
Lee

[a.alexeev.p]

Yes was always using paw setting. IPad air 4th gen

[schweboo]

I had seen the 'waiting for device' message appearing on my cheap Lenovo android device every few seconds and suspected it was a power problem based on messages in this Forum.

I replaced the battery pack and USB power cable.

The problem did not go away.

I then increased the PAW WIFI power to 100mW and the problem was solved.

The 'waiting for device' messages stopped and I was able to use the device.

[Admin]

I had seen the 'waiting for device' message appearing on my cheap Lenovo android device every few seconds and suspected it was a power problem based on messages in this Forum.

I replaced the battery pack and USB power cable.

The problem did not go away.

I then increased the PAW WIFI power to 100mW and the problem was solved.

The 'waiting for device' messages stopped and I was able to use the device.

That is surprising, 100mw is very high power for something so close
Even flarm only use 25mw in their transmissions !

Thx
Lee

[a.alexeev.p]

Hi!


Just have been testing PAW at home, which I appreciate is the worst environment, but may be there is something about it... so, satellites view was 12, but view only 3.

I have done a full playback and was watching SD on iPad and Home page from laptop. "GPS signal lost" message on iPad happened couple times (only about for a second though), but Home Screen GPS status has always been green and satellites use never dropped below 3.

Track file available to download here: https://www.icloud.com/iclouddrive/00ajBHGmEW3fusWccY7G5PbNw#2022-06-09_15-14

Is there a manual re how to read it by the way?

[steveu]

Is there a manual re how to read it by the way?

Upload to Aircrew and play it back by dragging the the white button at the bottom of the frame:

https://aircrew.co.uk/playback/

[a.alexeev.p]

Is there a manual re how to read it by the way?

Upload to Aircrew and play it back by dragging the the white button at the bottom of the frame:

https://aircrew.co.uk/playback/

did that as well actually... not skipped a bit there – at east the aircraft position was always visible... however in SD I got the message first time live and even in playback, which means probably that GPS drop was real?

[Admin]

Hi!

Just have been testing PAW at home, which I appreciate is the worst environment, but may be there is something about it... so, satellites view was 12, but view only 3.

is the unit indoors ?
If so unlikely to get a good GPS, remember your iOS device is using location services, not only GPS - which is why it works indoors

I have done a full playback and was watching SD on iPad and Home page from laptop. "GPS signal lost" message on iPad happened couple times (only about for a second though), but Home Screen GPS status has always been green and satellites use never dropped below 3.

please try with the unit outside - or with a good view of the sky without windows containing metal coating

Track file available to download here: https://www.icloud.com/iclouddrive/00ajBHGmEW3fusWccY7G5PbNw#2022-06-09_15-14
Is there a manual re how to read it by the way?

Track file is for engineering purposes - not really user consumption
at no point does that track report a loss of GPS, look at the GPGGA / GPGSA messages

thx
Lee

[steveu]

did that as well actually... not skipped a bit there – at east the aircraft position was always visible... however in SD I got the message first time live and even in playback, which means probably that GPS drop was real?

If there is no GPS loss in the PAW trackfile but there is in the SD version of it then you have to assume that SD lost its NMEA stream from the PAW or something similar, like the Wifi connection glitched.

As you say, testing GPS indoors is not the best, I assume that when you "went flying" on SD, you used the PAW GPS signal?

I see Lee has replied, so that's the real deal...

[a.alexeev.p]

Track file available to download here: https://www.icloud.com/iclouddrive/00ajBHGmEW3fusWccY7G5PbNw#2022-06-09_15-14
Is there a manual re how to read it by the way?

Track file is for engineering purposes - not really user consumption
at no point does that track report a loss of GPS, look at the GPGGA / GPGSA messages

thx
Lee

so, does that mean that GPS Lost message was likely caused by wifi drop? It would have made 100% sense, but the fact that I get it even in playback makes me doubt...

[Admin]

Wifi drop would produce the message
Waiting for device

[a.alexeev.p]

Wifi drop would produce the message
Waiting for device

Sounds like back to square 1 without much idea What's behind the drop?

[Admin]

Is the reported loss of gps during replay always reproducible?
If so, I should be able to reproduce this in the same way

[a.alexeev.p]

Is the reported loss of gps during replay always reproducible?
If so, I should be able to reproduce this in the same way

Yes, I was able to reproduce it couple times