<div dir="ltr">Does it power the GPS from the de-9?<br clear="all">Wes<br>---<br>Our lives begin to end the day we become silent about things that matter<br><br><br>
<div class="gmail_quote">On Sun, Sep 7, 2008 at 7:49 PM, Scott Miller <span dir="ltr"><<a href="mailto:scott@opentrac.org">scott@opentrac.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">I've got the first couple of prototypes of my Garmin <> NMEA converter<br>board build and running - beta testing will be starting soon. This<br>
board is intended to work with the nuvi and StreetPilot models that have<br>a mini-B USB connector (and support fleet management mode.) Here's a<br>picture of my TH-D7A hooked up to a nuvi 350:<br><br><a href="http://n1vg.net/images/nuvi_d7.jpg" target="_blank">http://n1vg.net/images/nuvi_d7.jpg</a><br>
<br>So far only the nuvi 350 works right for waypoint display, but I think<br>Garmin's going to have a solution for that soon. Here's another shot of<br>the converter circuit, this one with a DB9:<br><br><a href="http://n1vg.net/images/nmea_converter.jpg" target="_blank">http://n1vg.net/images/nmea_converter.jpg</a><br>
<br>It'll probably get overmolded directly into the cable eventually, but<br>for now it's just encapsulated in adhesive-lined heat shrink tubing.<br>Here's the PCB itself:<br><br><a href="http://n1vg.net/images/nmea_pcb.jpg" target="_blank">http://n1vg.net/images/nmea_pcb.jpg</a><br>
<br>Afraid I only had my phone camera handy when I took that, so the quality<br>is bad. The whole thing is about 2mm thick. I probably could have made<br>it a little narrower, but I got tired of playing with the routing. It's<br>
got a 20 MHz HCS08 processor on it, a clock crystal, ESD protection, and<br>an RS-232 transceiver. It's all powered by the nuvi (but not when the<br>nuvi is on battery power).<br><br>I've only got a few prototypes, and I've already got beta testers lined<br>
up. I'm afraid I can't build any more until I get more USB cables<br>(they're non-standard 5-conductor cables with a custom right angle<br>overmold, and the factory is just getting started on them) and soldering<br>
a 7mm, 48-contact QFN chip by hand is exceedingly tedious. I also<br>haven't built a programming fixture yet, so loading the firmware<br>requires soldering wires to test pads and then removing them again when<br>it's done.<br>
<br>But it works! Plug it in to the nuvi and it starts spitting out GPGGA<br>and GPRMC sentences. It'll take GPWPL and PKWDWPL (D710) waypoint<br>inputs, and in the case of the PKWDWPL format it'll pick an appropriate<br>
symbol as well.<br><br>I'm planning on a retail price of $48 for the converter cable. I'll let<br>everyone know when it's available.<br><br>Scott<br>N1VG<br><br><br>_______________________________________________<br>
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</blockquote></div><br></div>