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[aprssig] D700/D710 to Garmin adapter

Scott Miller scott at opentrac.org
Mon May 26 15:12:16 UTC 2008

I don't think the 2610 has the right interface.  Any of these nuvi, 
zumo, and StreetPilot models should work, at least for position data:



Ben Lindner wrote:
> will it work with the Garmin Street Pilot 2610 or does it have to be 
> serial GPS
> Ben Lindner
> Scott Miller wrote:
>> Just wanted to give a quick update on a project I mentioned at Dayton. 
>> I've built a protocol translator (largely based on code from the T2) 
>> that converts Garmin asynchronous binary protocol (including FMI data 
>> from the newer nuvi and StreetPilot units) to NMEA (GPGGA, GPRMC, and 
>> GPGLL), and also functions in reverse to create waypoints from GPWPL 
>> and PKWDWPL (D710) sentences.
>> For the D710, it does symbol translation (picking the closest 
>> available Garmin native symbol), and includes the course/speed and 
>> altitude data in the comment details.  Waypoint display works on just 
>> about any of the serial interface units (chartplotters, GPSmap 
>> handhelds, serial eTrex, etc), but so far of the nuvi/StreetPilot 
>> series, only the nuvi 350 works right.  The rest will output position 
>> data, but not display waypoints.
>> Anyway, the point is that there'll be an alternative to the $700 AvMap 
>> displays.  Hopefully Garmin will come through with some fixes for the 
>> other models soon.
>> For what it's worth, I've also added experimental support for the 
>> AvMap to the Tracker2.  There doesn't seem to be much interest when it 
>> works natively with the Garmins, though.
>> Next up, I get to squeeze this whole thing into a little tiny 
>> connector shell.  Looks like I'll get to try my hand at soldering 7mm 
>> QFN48's...
>> Scott
>> N1VG
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