Mobile Subsurface app? Does that work?
I will have to get a Mobile phone to test ( I manly use linux based mobile OS KDE on pine64pro ) later on today I will get subsurface on a droid platform and check... I did not know my research and 180 day rage run would break open today the way it did... I will test later need to see how long it takes for it to forget bluetooth pair attempts and also how many bluetooth radios can be in operation around it ( this also seems to be a big issue as it does not keep any pairing keys )
#shearwater_bluetooth_Issue
TO point the following has been determined which is scary for anyone with a Shearwater device ( in hindsight of the ultimate bad day event )
1.) you are diving dual dive computers one dies ( not the perdix2 )
2.) your perdix2 is paired to your cell phone
3.) you take a DCS incident in water + injury [shark] etc shock "emergency surfacing required" decompression skipped....
4.) you need a evac ... phone dies or is left on the boat
5.) you arrive re-compression [no data] just a circus clown perdix2 and hopefully your written dive plan
.......
Why is this scary
1.) the perdix2 will not pair with anything but your phone unless it is wiped ( it also is in calculation mode so thus LOCKED to a pier to pier memory )
2.) Why do you think the shearwater clowns made the cloud offering... 2 fold data harvesting for FREE and liability absolution for this hardware issue which was introduced in 2019... when the firmware or hardware build had a broken bluetooth stack.. <--- thinking hardware as if it was firmware then there is no excuse why it has not been patched or rebuilt.
3.) even if it managed to ping your phone turn on sync using a jedi idiot trick and sync to the cloud there would be no way for you to give them access to your account if you are unconscious or in surgery
=================================================================================
2023 at 3:19 PM wrote:
>
> The only way I'm able to download dives is to remove my Perdix from
> the OS and from Subsurface. Then I connect the Perdix as a new device
> and it will then download the dives.
This sounds very much like the traditional "Shearwater can be *very*
fussy about downloading from multiple different devices".
We never figured out exactly what the problem was, but it often seems
like the Shearwater BLE has some internal odd pairing thing, and it
remembers devices it has downloaded from before, and if it can still
see that old device, it won't talk to a different new one, no matter
what you do.
The solution to make it work fairly reliably was to always use the
same device to download from, and never *ever* mix devices. Once you
mix devices you end up with problems, and then getting back to a
working situation can be problematic.
The only thing that seemed to really clear the BLE stack in those
Shearwater computers was the computer actually turning off. And to
make things more exciting, that's not the same as "black screen".
While the Shearwater is still doing deco calculations (ie a few days
after the last dive), it's not "off" even if the screen is black, it's
in some low-power mode.
And again: the above is random rantings just based on the behavior
we've seen. I don't _know_ how it works. I just know that the trick to
make it work was generally to try to never ever connect to the
Shearwater from more than one device.
Once it gets confused, the "try to fix it" has ranged from "make sure
all other computers are far enough away to not be visible in BLE
scanning, or have their bluetooth turned off" to "actually remove the
battery from the Shearwater dive computer to really reset it".
Btw, in case it wasn't obvious: please do *not* do that battery
removal if you are still diving the computer in the next few days. It
also makes it clear any deco state and time settings, so it's really a
last option if nothing else has worked.
