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Is there a list of which Garmin nuvi models support "fleet management
mode"?<br>
I'm looking to replace my Streetpilot 1 (the monochrome screen model
that DOESN'T support<br>
NMEA In mode).<br>
<br>
Otherwise, any way to adapt your cable to the round garmin plug and
serial interface?<br>
<br>
Scott Miller wrote:
<blockquote cite="mid:48C46877.3020700@opentrac.org" type="cite">
<pre wrap="">I've got the first couple of prototypes of my Garmin <> NMEA converter
board build and running - beta testing will be starting soon. This
board is intended to work with the nuvi and StreetPilot models that have
a mini-B USB connector (and support fleet management mode.) Here's a
picture of my TH-D7A hooked up to a nuvi 350:
<a class="moz-txt-link-freetext" href="http://n1vg.net/images/nuvi_d7.jpg">http://n1vg.net/images/nuvi_d7.jpg</a>
So far only the nuvi 350 works right for waypoint display, but I think
Garmin's going to have a solution for that soon. Here's another shot of
the converter circuit, this one with a DB9:
<a class="moz-txt-link-freetext" href="http://n1vg.net/images/nmea_converter.jpg">http://n1vg.net/images/nmea_converter.jpg</a>
It'll probably get overmolded directly into the cable eventually, but
for now it's just encapsulated in adhesive-lined heat shrink tubing.
Here's the PCB itself:
<a class="moz-txt-link-freetext" href="http://n1vg.net/images/nmea_pcb.jpg">http://n1vg.net/images/nmea_pcb.jpg</a>
Afraid I only had my phone camera handy when I took that, so the quality
is bad. The whole thing is about 2mm thick. I probably could have made
it a little narrower, but I got tired of playing with the routing. It's
got a 20 MHz HCS08 processor on it, a clock crystal, ESD protection, and
an RS-232 transceiver. It's all powered by the nuvi (but not when the
nuvi is on battery power).
I've only got a few prototypes, and I've already got beta testers lined
up. I'm afraid I can't build any more until I get more USB cables
(they're non-standard 5-conductor cables with a custom right angle
overmold, and the factory is just getting started on them) and soldering
a 7mm, 48-contact QFN chip by hand is exceedingly tedious. I also
haven't built a programming fixture yet, so loading the firmware
requires soldering wires to test pads and then removing them again when
it's done.
But it works! Plug it in to the nuvi and it starts spitting out GPGGA
and GPRMC sentences. It'll take GPWPL and PKWDWPL (D710) waypoint
inputs, and in the case of the PKWDWPL format it'll pick an appropriate
symbol as well.
I'm planning on a retail price of $48 for the converter cable. I'll let
everyone know when it's available.
Scott
N1VG
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</pre>
<pre wrap="">
<hr size="4" width="90%">
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
* My favorite law: The Law of Unintended Consequences *
* -- John Vause *
* "Over here, over there, everywhere, *
* Today, tomorrow, always: *
* Bad men there are. *
* Hate you they do. *
* Kill you they will. *
* Watch out you better!" -- Shoshone refrain *
* *
* You can fool yourself if you want, and you can fool *
* as many as will follow for as long as you can get *
* away with it. But you can't fool reality. *
* - James P. Hogan in "Kicking The Sacred Cow" *
* *
* Si vis pacem, para bellum - Cicero *
</pre>
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