Thanks for your additions Dan !
I locked on SiRF3 because it is said to be much more powrfull than every others, but I think I'll begin with known things.

In fact I would like to know data (speed,etc) during my trip AND look at all data at home. gpsd whould be helpfull, but I like to know exactly what I get from gps (NMEA sentences).
I'll experiment with little things at first, and complete it progressively.

2005/7/27, Jérôme Multrier <jerome.multrier@gmail.com>:
It looks too easy ....
Thanks a lot for your reply !
I think I'll begin with that type of stuff (without bluetooth first).

Just another question : do you know a simple way (chip) to follow the battery charge ? I won't really like the system poweroff sporadically without a pretty "battery low".



2005/7/27, Doug Sutherland <doug@proficio.ca>:
You can easily attach GPS to gumstix right now. They only need a UART
connection, so can be done with breakout-gs, with a 2-wire connection
to GPS. Check out lassen IQ and the compact embedded antenna:

http://www.sparkfun.com/shop/images/374.jpg
http://www.sparkfun.com/shop/images/378.jpg
http://www.sparkfun.com/shop/index.php?shop=1&cart=291615&cat=63&
http://www.sparkfun.com/shop/index.php?shop=1&cart=291615&cat=64&

It's easy to solder wires onto the connector that plugs into the GPS
receiver, and to the breakout-gs. The connector is meant to board
connection, but I have soldered similar connector for the laipac GPS
shown on the same page. All the GPS needs is 3.3v power and ground,
and a 2-wire connection (rx/tx) to the gumstix. Everything could run
off one or two cells of lithium ion or lithium polymer batteries.

For a bluetooth display, you can connect a bluetooth module right
onto an LCD:

http://www.sparkfun.com/tutorial/BlueTooth/blutoo10.jpg
http://www.sparkfun.com/tutorial/BlueTooth/bluetooth_primer.htm

  -- Doug


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Jerome



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Jerome