Re: Why would I send data to a GPS unit?
From: Jack Erbes (jackerbes_at_adelphia.net)
Date: 12/12/04
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Date: Sun, 12 Dec 2004 14:45:27 -0500
Isaac Wingfield wrote:
> I recently got my hands on a "Furuno" OEM GPS module.
>
> Thanks to a web page I googled up, I found the pinout and got the thing
> working, but I couldn't find anything about what messages it might
> accept.
>
> I intend to use the thing with my laptop and something like
> "StreetAtlas", so I'm not sure if I need to send it anything at all...
Even if it does not have a display or store waypoints and tracks, you
might want to communicate with it if it is configurable.
> It's a Furuno GN74; does anybody have anything on it?
Peter Bennet's GPS page has a little info on the Furuno GP-31, you might
look at that on the chance that your GPS engine might use the same
communication scheme or commands.
http://vancouver-webpages.com/peter/index.html
That page and this one, http://gpsinformation.net/, are pretty
enlightening for people that like to play around with GPS.
Here is a page with some info on your receiver. Looking at the specs it
is fairly old technology. Maybe you can help the guy fill in some of
the missing data for that receiver.
http://www.rhel.cnchost.com/rh/oemtable.html
> I'm still a newbie at GPS, so I wonder what messages I might want to
> send it, and how I'd know if they "took"?
Some of the passive receivers can be configured for language, units of
measurement, NMEA versions, timing signal output, and things like that.
Without a display or keyboard, configuration is usually done with a
small executable (from DOS or even Windows) that communicates with the
receiver via the data I/O leads.
Jack
-- Jack Erbes in Ellsworth, Maine, USA - jacker at midmaine dot com
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