<div dir="ltr"><div>HI Mark,</div><div><br></div><div>I have an Ioniq 5.</div><div><br></div>I have no idea if it's related to the CAN bus. I have had lots of hypotheses but nothing has stuck. I know at one point polling too fast seemed to totally freeze out the GPS updates from getting to the Maps UI and from Android Auto. But I'm suspecting there is other things going on. I tried it with the GSM switched off on startup and it was still happening (GPS Drift).<div><div><div>The antennae cords are quite long, so I tried placing then on opposite rear seats, which should be far enough away, and it was still happening. I rearranged cords so they weren't next to each other. And anyway I TRIED SWITCHING GSM OFF.</div><div><br></div><div>I really didn't expect removing the daughter board to work btw. I swapped back to my old OVMS and the drifting went away, so I removed the GSM module from the new OVMS and was really not expecting any difference, as I thought I'd eliminated that module by turning the power off!! I was totally expecting it to be an issue on the main OVMS board.</div><div><br></div><div>More clutching at straws: At one point I noticed that both the GSM and GPS antennae had come slightly loose at which point I tightened them.</div><div><br></div></div></div><div>Any other thoughts would be welcome. I really would like to have the GSM + GPS back on board. I can use an external GSM to wifi extender ... but GPS would be harder.</div><div><br></div><div>//.ichael</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 3 Jul 2023 at 10:33, Mark Webb-Johnson <<a href="mailto:mark@webb-johnson.net">mark@webb-johnson.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>Michael,<div><br></div><div>I don’t see how that board is related to CAN bus at all. It does have an incremental power draw, so could affect 12V supply (but unlikely).</div><div><br></div><div>Far more likely is the antenna placement and direct RF interference. Where did you place the two OVMS antennas (GPS and GSM), and are they anywhere close to the original GPS antenna in the car? What is your car type?</div><div><br></div><div>Regards, Mark.<br><div><br><blockquote type="cite"><div>On 2 Jul 2023, at 4:24 PM, Michael Geddes <<a href="mailto:frog@bunyip.wheelycreek.net" target="_blank">frog@bunyip.wheelycreek.net</a>> wrote:</div><br><div><div dir="ltr"><div dir="auto">It's definitely something to do with the daughter board for GSM+GPS since I've take it out and it all seems fine!!! I have the OBD2ECU updating the speed at an acceptable rate too.</div><div dir="auto"><br></div><div>//.ichael</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 19 June 2023, 10:02 pm Michael Geddes, <<a href="mailto:frog@bunyip.wheelycreek.net" target="_blank">frog@bunyip.wheelycreek.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="ltr"><div dir="auto"><div>*sigh* I'm now at the point where my OVMS is next to unusable because of the GPS interference issue. I switched back to my old ovms unit (no GSM daughter board and the external power doesn't work)... And the problem went away. Even with the faster polling. So it seems something is possibly wrong with the OVMS hardware itself.. Maybe some noise on the can bus is playing havock? It's most peculiar. </div><div dir="auto"><br></div><div dir="auto">It might also make sense of something I'm seeing on the HUD which is that it periodically stalls and resets. </div><div dir="auto">I guess I should move the daughter board across to check out that. </div><div dir="auto"><br></div><div dir="auto">Michael </div><div dir="auto"><br></div><div dir="auto"><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Mon, 29 May 2023, 4:06 pm Michael Balzer, <<a href="mailto:dexter@expeedo.de" rel="noreferrer noreferrer" target="_blank">dexter@expeedo.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
Michael,<br>
<br>
if the module affects your car's builtin navigation system, I think
that points to some EM interference. While the module has passed the
EM tests for certification, it still emits some EM noise, and some
devices are more sensitive to this than others. There also may be a
satellite outage affecting Australia currently, that adds to the
sensitivity.<br>
<br>
You could try to selectively switch off Wifi and the modem when the
issue occurs, to see if one of these cause it.<br>
<br>
If not, you could try reorienting and replacing the module in the
car, especially if it's very close to the nav system's GPS antenna.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div>Am 27.05.23 um 10:07 schrieb Michael
Geddes:<br>
</div>
<blockquote type="cite">
<div dir="auto">Latest: I changed the startup vehicle to None and
turned off the mobile. Still getting drifting vehicle GPS until
I unplug the OVMS. Hardware issue? Does anybody have any clues?
<div dir="auto"><br>
</div>
<div dir="auto">Michael </div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sun, 21 May 2023, 11:41 am
Michael Geddes, <<a href="mailto:frog@bunyip.wheelycreek.net" rel="noreferrer noreferrer noreferrer" target="_blank">frog@bunyip.wheelycreek.net</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Hi all,<br>
<div>I'm having a bunch of weird things going on which seem
correlated to having the OVMS running. I'm not convinced
of causation yet.</div>
<div><br>
</div>
<div>My car's Nav system is drifting out majorly (like by
>100m) and then seems to stay out. This causes major
distractions as the nav system keeps giving me warnings
about going down one-way roads and it makes the navigation
'interesting' to use.</div>
<div><br>
</div>
<div>I also noticed that Android Auto location was frozen in
one place, so I assumed this was coming from the car - or
meant to be anyway. I reduced the polling rate (new work
I'm doing) slightly and this freezing no longer happens.
(To 3 speed queries per second). But the drifting out on
the Navigation still happens... but then not on AA!? Very
very weird.</div>
<div><br>
</div>
<div>If I unplug the OVMS from the OBD port (as I'm driving)
it seems to (but not immediately - after a minute or so)
correct itself. It's hard to confirm this is directly
resulting .. but it seems to be?</div>
<div><br>
</div>
<div>I turned off my ECU2OBD which should mean that it is
resorting to 1 per second POLL with a low throttle value.
I'll run with some logs to make sure this is what is
happening.. but it still seems that this hasn't stopped
this issue from happening.</div>
<div><br>
</div>
<div>I've tried turning the GSM power off. No result.</div>
<div><br>
</div>
<div>Another note: I seem to have stopped getting anything
near regular updates from the OVMS GPS. Every now and
again it gets a successful change come through. Still
working on diagnosing that.. maybe it's related?</div>
<div><br>
</div>
<div><br>
</div>
<div>Any thoughts / help would be useful.</div>
<div><br>
</div>
<div>//.ichael</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
</blockquote>
</div>
<br>
<fieldset></fieldset>
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