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Michael,<br>
<br>
did you check the SW_12V level with the HUD connected?<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 16.10.22 um 06:36 schrieb Michael
Geddes:<br>
</div>
<blockquote type="cite"
cite="mid:CAH0p7u+MNu=SFDDjZAVcskjMyL13wKmgEk4BMOM429kXEQeToQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div dir="ltr">Thanks for the response Greg.
<div><br>
</div>
<div>I tried what you suggested and it still doesn't turn on.
(The 'on/off' is a slider switch rather than a momentary
button)</div>
<div><br>
</div>
<div>I also went into Jaycar and tried this simple HUD: <a
href="https://www.jaycar.com.au/gps-speedometer-head-up-display-with-obdii-data/p/LA9036?gclid=CjwKCAjwtKmaBhBMEiwAyINuwAF-ZMXvydGdYsUu--w37CmHr6mf1Emx_o2shbA3IvUNUQ4k-ZWtcBoCwQoQAvD_BwE"
moz-do-not-send="true" class="moz-txt-link-freetext">https://www.jaycar.com.au/gps-speedometer-head-up-display-with-obdii-data/p/LA9036?gclid=CjwKCAjwtKmaBhBMEiwAyINuwAF-ZMXvydGdYsUu--w37CmHr6mf1Emx_o2shbA3IvUNUQ4k-ZWtcBoCwQoQAvD_BwE</a></div>
<div>Results were the same (didn't have time to find any
settings though - as I got permission to try it before I
bought it).</div>
<div><br>
</div>
<div>I also confirmed that the cable is wired exactly as
specified (no more, no less) including 120ohm resistor.</div>
<div><br>
</div>
<div>I'm starting to think there's an issue with the OVMS
board itself!?</div>
<div><br>
</div>
<div>//.ichael</div>
<div><br>
</div>
</div>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sun, 16 Oct 2022 at
02:09, Greg D. <<a href="mailto:gregd2350@gmail.com"
moz-do-not-send="true" class="moz-txt-link-freetext">gregd2350@gmail.com</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 bgcolor="#FFFFFF"> Hi Michael,<br>
<br>
Yeah, odd. <br>
<br>
I see in the description that there's a power switch on
the side of the unit, so that will probably interact with
the voltage transition. After turning Ext12v on, and
pushing the on/off button on the HUD unit, I would expect
it would turn on. After that, transitioning Ext12v on/off
should trigger the unit to turn on/off as well.<br>
<br>
Assuming you do get it running, what I would suggest is to
create a pair of Events to force Ext12v on and off when
the car state transitions. For my car, the states are
vehicle.on and vehicle.off, but yours might be different.
In the "on" event script I also stop and restart the
obd2ecu process, as that will clear the CAN3 bus hang that
I've experienced. It's a long shot, but perhaps the HUD
isn't turning on because it's not seeing CAN traffic. You
might try the 12v off / ecu stop / ecu start / 12v on
sequence manually and see if that wakes the HUD up.<br>
<blockquote>OVMS# vfs cat /store/events/vehicle.on/myevent<br>
power ext12v off<br>
obdii ecu stop<br>
obdii ecu start can3<br>
power ext12v on<br>
<br>
OVMS# vfs cat /store/events/vehicle.off/myevent<br>
power ext12v off<br>
</blockquote>
Good luck!<br>
<br>
Greg<br>
<br>
<br>
<div>Michael Geddes wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">More information:
<div><br>
<div>I'm definitely getting power on the OVMS ->
OBDII cable. 11 volts when the car is off, and
12.6 volts when the car is on. I'm assuming this
is quite deliberate. (And like 0.2 volts when the
power to the ext12v is off).</div>
<div><br>
</div>
<div>By default, the HUD was needing (according to
docs - probably) 13.2v to trigger it to turn on..
so I connected it directly to the car OBD and
changed that setting to 11.5 volts.</div>
<div><br>
</div>
<div>When I turned the car off (still connected
directly).. the HUD remained on as it was still
getting > 12V.. so the setting definitely
worked.</div>
<div><br>
</div>
<div>Unfortunately when I then connected the OVMS to
the OBDII and the OVMS -> OBDII cable to the
HUD - it still didn't turn on. :( (oh and yes -
"power ext12v on". </div>
<div><br>
</div>
<div>Any thoughts on this would be welcome.</div>
<div><br>
</div>
<div>//.ichael</div>
<div><br>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sat, 15 Oct 2022
at 07:15, Michael Geddes <<a
href="mailto:frog@bunyip.wheelycreek.net"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">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>Anybody got any experience with HUDs?</div>
<div><br>
</div>
<div>I bought this simple HUD from FastTech:</div>
<div><a
href="https://www.fasttech.com/products/9686283"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.fasttech.com/products/9686283</a></div>
<div>When connected direct to the OBDII port, it
powers on and seems to function. When I connect
it to the OVMS module with the standard <a
href="https://www.fasttech.com/products/9652027"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.fasttech.com/products/9652027</a>
the HUD doesn't even power on.</div>
<div><br>
</div>
<div>It's stated draw is 200ma which afaict should
be fine. I'm pretty sure the 12V power is
getting to PIN 16... though I will try again to
make sure. I only have a crappy little
Multimeter.</div>
<div><br>
</div>
<div>On the Troubleshooting it states:</div>
<div> "HUD only available for cars with OBD2 and
EU-OBD agreements ... HUD Products don't support
JOBD and OBDI protocol."</div>
<div><br>
</div>
<div>The OBD HUD connector has the following pins:</div>
<div>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">4*
Chassis</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">5*
Signal Ground</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">6
CAN High</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">7
<b>ISO9141 K Line</b></p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">14
CAN Low</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">15
<b>ISO9141 L Line</b></p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">16
Vehicle Battery +ve</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">*
Long pins</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent"><br>
</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">These
are the standard OVMS supplied pins:</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">4
Chassis Ground</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">5
Chassis Ground</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">6
CAN H (Primary)</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">14
CAN L (Primary)</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">16
+12V</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">So
obviously the main difference is the lack of K
/ L lines in the OVMS ... but I wouldn't have
thought that would have prevented it from
powering up.</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">Does
anybody have any thoughts on this?</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent">//.ichael</p>
<p
style="line-height:100%;margin-bottom:0cm;background:transparent"><br>
</p>
</div>
</div>
</blockquote>
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<pre class="moz-signature" cols="72">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
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