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NMEA output from a Nuvi?

 

Is the fact that there is no NMEA output from A Nuvi simply a result of there being no serial port on the device? I'm wondering if there was some sort of converter than could obtain NMEA data via the Nuvi's USB port ? Perhaps the Nuvi does not output this data at all.

Might need a marine product

You might need to go with a marine product: https://buy.garmin.com/shop/shop.do?cID=148

Although theres a lot of undocumented features of the Nuvis, there doesn't seem to be a NMEA output feature.

--
Chuck - Nuvi 200, Nuvi 255W

Options

k3uk wrote:

Is the fact that there is no NMEA output from A Nuvi simply a result of there being no serial port on the device? I'm wondering if there was some sort of converter than could obtain NMEA data via the Nuvi's USB port ? Perhaps the Nuvi does not output this data at all.

If you've got a specific application in mind, then maybe these Garmin offerings are more appropriate:-
arrow https://buy.garmin.com/shop/shop.do?cID=157

Re: the serial port..the Nüvi series does have one - it's used for the Fleet Management interface (and I'll bet for the Traffic Receivers). Physically it seems to be either the mini-usb port, selected by a special value resistor or the flat-plug on the cradle...depending on unit). I don't think the output is NMEA, but there is an SDK available for it.
See:
arrow http://www.garmin.com/garmin/cms/site/uk/fleetmanagement

(although I've just noticed that the Nüvi 2xx/7xx don't get a mention).

The StreetPilot C3xx (and also C5xx &Zümo? - at push) can be made to output positional data over USB, but it's in Garmin's own format. This works with their NRoute program (though it was quite unpredictable with the Streetpilot C510). This o/p can be converted to NMEA using Franson's GPSGATE product.
See:
arrow http://www.franson.com/

It probably depends if you have something specific in mind - or are just "having a play!" grin

--
------------------------ Phil Hornby, Stockport, England ----------------------               http://GeePeeEx.com - Garmin POI Creation made easy           »      

Translator cable

Pardon the commercial plug, but I just finished my FMI to NMEA translator cable:

https://www.argentdata.com/catalog/product_info.php?products...

As someone else mentioned, many models DO have a hidden serial output, which rather inconveniently happens to use a variation of the old Garmin asynchronous binary protocol. My translator cable has a microcontroller inline that speaks Garmin and translates it to NMEA (GPGGA, GPRMC, and GPGLL, at least) and can even accept waypoints (GPWPL, PKWDWPL), but the waypoint display isn't part of the FMI spec and it only happens to work properly on the nuvi 350, and apparently that was an accident.

Don't get me started on how broken the POI upload mechanism is in FMIv2.

Scott

D700/D710

One more thing - judging by the fact that your username is your ham callsign, I'm guessing you might be after something for APRS. If you've got a Kenwood D7, D700, or D710, I've got a version of the cable with the proper 2.5mm plug on it:

https://www.argentdata.com/catalog/product_info.php?products...

The d-sub version will work with most other trackers.

Scott

NMEA output - connecting nuvi 550 to OpenCPN

Found this thread whilst trying to find out if I could use my nuvi with OpenCPN charting software on my laptop. With the help of various posts on the web, I have managed to connect my nuvi 550 to my notebook running windows 7 I know it's not really POI stuff, but it is related to an earlier post!

Power up the nuvi in battery mode
Press the battery icon until it goes into diagnostic mode.
Whilst in diagnostic mode, connect to the USB port. (Hopefully) Windows will install the software and then recognise the nuvi as a Garmin GPS device.

Now exit diagnostics - the garmin soft reboots and goes into normal function.

I then powered up OpenCPN (free chart plotting software) and in tools selected Garmin as the GPS source. I think at this point, if your charting software doesnt have Garmin as an option you may need to install GPSGate to do the connection.

Once the garmin has acquired the satellite, openCPN shows that it's receiving GPS input and our boat is in the right place on the chart! BTW The acquisition takes longer than when the garmin is not connected to the pc. Just be patient.

The chart itself was doing some strange things, changing its orientation, and I wondered if the garmin was conflicting in some way. So, nothing ventured, nothing gained, I pressed the power button to switch it off. Lo and behold, OpenCPN is still showing a satellite link, although the garmin is off and just charging.

I have no idea why this works and I have no idea if I'm likely to damage the garmin, or whether it'll work on other models. We have yet to move the boat either, so have no idea if it 'really' works!! I'll report back in a few days time!

Lesley

Navsync

I own a Navsync model CW46.

It provides a GPS disciplined highly accurate 10Mhz clock pulse for my Flex 5000a SDR.

It also provides NMEA data via COM port.

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