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Old 02-11-2010, 09:41 PM
Ray Van Dolson
 
Default USB GPS

Anyone ever used the iGPS-500 under CentOS 5? Any recommendations on a
USB-based GPS that "just works"?

Ray
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Old 02-12-2010, 04:00 AM
"Michael A. Peters"
 
Default USB GPS

Ray Van Dolson wrote:
> Anyone ever used the iGPS-500 under CentOS 5? Any recommendations on a
> USB-based GPS that "just works"?
>

I do not have personal experience but I hear the Garmin models work
well. I have a serial port Garmin model that works well with gpsbabel,
and I believe the setup for USB is similar.

http://www.gpsbabel.org/os/Linux_Hotplug.html

has instructions for fedora - I'm guessing the fc{5,6,7,8} instructions
are what would work in CentOS.
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Old 02-12-2010, 07:05 AM
Mathieu Baudier
 
Default USB GPS

> Anyone ever used the iGPS-500 under CentOS 5? *Any recommendations on a
> USB-based GPS that "just works"?

I use the Garmin GPSMAP 60CSx on CentOS.
This is a very good device (but more for "offroad" activities).

When you connect the USB cable it is identified as a /dev/ttyUSB0
device that you can use with GPSBabel.
You need to give the proper permissions for your user on this device
(I had an udev rule for Fedora, but on CentOS I did not yet too time
to set it up again).

>From the GPS unit itself you can activate an 'USB mass storage' mode
which will make the internal SD card appear as an USB mass storage
(like an USB stick).
This is very handy if you want to retrieve automatically generated
track files in GPX format or update the maps (although I recommend
using a card reader for that: much much faster).

A bit OT but still making sense in this answer: you may be interested
by the excellent community developed maps of OpenStreetMap
(http://www.openstreetmap.org/ , licenses and production mechanisms
similar to Wikipedia), which can be downloaded in Garmin format:
http://wiki.openstreetmap.org/wiki/OSM_Map_On_Garmin/Download (or the
Garmin maps can be generated using
http://wiki.openstreetmap.org/index.php/Mkgmap)

Most of the above probably applies to all other recent Garmin devices
but you should double check.

You can also have a look at the GPS review from OpenStreetMap users here:
http://wiki.openstreetmap.org/wiki/GPS_Reviews
(but you won't find much information on supported OSes, esp. CentOS)
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Old 02-12-2010, 07:29 AM
John R Pierce
 
Default USB GPS

Mathieu Baudier wrote:
>> Anyone ever used the iGPS-500 under CentOS 5? Any recommendations on a
>> USB-based GPS that "just works"?
>>
>
> I use the Garmin GPSMAP 60CSx on CentOS.
> This is a very good device (but more for "offroad" activities).
>

there's two generic families of GPS's, simple antenna+radio-only units
which just report position over USB (or on older ones, rs232 serial),
and fancy handheld units that have mapping and tracking and all kinda
bells and whistles such as the various Garmin units

most folks who want a GPS to connect to a computer are probably more
interested in the simple kind, as they want to use the computer for any
mapping etc. most all simple GPS's speak in NMEA, which just transmits
a constant stream of simple ascii 'sentences' with the current location
and some metadata. fancy GPS's like the garmins can speak either
simple NMEA or their own Garmin protocol which supports mapping,
waypoints, etc

typical NMEA output is...

$GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545. 4,M,46.9,M,,*47

(12:35:19 UTC, 48 deg. 07.038' N, 11 deg 31.000' E latitude), quality 1, 8 sats, etcetc


most any NMEA USB simple GPS should work, they all emulate a USB serial
port on the PC side, and just spew their NMEA stream over this 'serial'
port. for instance, this
http://www.amazon.com/GlobalSat-BU-353-Waterproof-USB-Receiver/dp/B000PKX2KA
which uses thee excellent SIRF GPS chip, uses a Prolific PL2303
USB-serial adapter chip, which I'm pretty sure is easily supported on
linux (havent tested it, hwoever)



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Old 02-12-2010, 08:35 AM
"Michael A. Peters"
 
Default USB GPS

John R Pierce wrote:
> Mathieu Baudier wrote:
>>> Anyone ever used the iGPS-500 under CentOS 5? Any recommendations on a
>>> USB-based GPS that "just works"?
>>>
>> I use the Garmin GPSMAP 60CSx on CentOS.
>> This is a very good device (but more for "offroad" activities).
>>
>
> there's two generic families of GPS's, simple antenna+radio-only units
> which just report position over USB (or on older ones, rs232 serial),
> and fancy handheld units that have mapping and tracking and all kinda
> bells and whistles such as the various Garmin units
>
> most folks who want a GPS to connect to a computer are probably more
> interested in the simple kind, as they want to use the computer for any
> mapping etc.

Guess I'm not most.
I use my GPS to collect data on reptiles and amphibians, dump the data
to gpx, pass it through http://www.gpsvisualizer.com/elevation to fix
the elevation (which can sometimes be considerably off in the unit,
especially with tree cover), and provide georeference data when I submit
the data to the nafha database.

I don't do any mapping with the computer, unless you count finding spots
that look interesting in google earth and uploading them to the unit for
me to then find out in the field.

Lot of people just like me, too.
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Old 02-14-2010, 12:27 PM
Pasi Kärkkäinen
 
Default USB GPS

On Fri, Feb 12, 2010 at 12:29:25AM -0800, John R Pierce wrote:
> Mathieu Baudier wrote:
> >> Anyone ever used the iGPS-500 under CentOS 5? Any recommendations on a
> >> USB-based GPS that "just works"?
> >>
> >
> > I use the Garmin GPSMAP 60CSx on CentOS.
> > This is a very good device (but more for "offroad" activities).
> >
>
> there's two generic families of GPS's, simple antenna+radio-only units
> which just report position over USB (or on older ones, rs232 serial),
> and fancy handheld units that have mapping and tracking and all kinda
> bells and whistles such as the various Garmin units
>
> most folks who want a GPS to connect to a computer are probably more
> interested in the simple kind, as they want to use the computer for any
> mapping etc. most all simple GPS's speak in NMEA, which just transmits
> a constant stream of simple ascii 'sentences' with the current location
> and some metadata. fancy GPS's like the garmins can speak either
> simple NMEA or their own Garmin protocol which supports mapping,
> waypoints, etc
>
> typical NMEA output is...
>
> $GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545. 4,M,46.9,M,,*47
>
> (12:35:19 UTC, 48 deg. 07.038' N, 11 deg 31.000' E latitude), quality 1, 8 sats, etcetc
>
>
> most any NMEA USB simple GPS should work, they all emulate a USB serial
> port on the PC side, and just spew their NMEA stream over this 'serial'
> port. for instance, this
> http://www.amazon.com/GlobalSat-BU-353-Waterproof-USB-Receiver/dp/B000PKX2KA
> which uses thee excellent SIRF GPS chip, uses a Prolific PL2303
> USB-serial adapter chip, which I'm pretty sure is easily supported on
> linux (havent tested it, hwoever)
>

PL2303 USB-serial adapters work for me on Linux.. I'm mainly using them
to configure switches/routers or occanional serial console dumping.

I think I have some Belkin branded PL2303 based usb-serial adapter.

-- Pasi

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