Gps Speedo / Odometer

hi there.

since i'm working on a carputer system ( not installed yet ) im wondering if there is a GPS speedometer software.

for example in the NMEA string from your serial port is one line:
$GPRMC,195607,A,3925.6409,N,10438.7308,W,55.266,93 .9,120300,10.4,E*58

the ground speed is given on this position

$GPRMC,xxxx,A,xxxx,N,xxxx,W,[GroundSpeed!],xxxx,xxxx,xxx,E*xx

what i am searching now, is a program for windows (not for PPC) that can (graphically) display this string.

any ideas.. or even any finds?

anyone?

Do a search of mp3car.com they have a lot of experiance and some neat programs and add-ons. hope this helps G/L

[mikegett]

I have no idea what your strings represent, but my microsoft streets and trips has a gps locator that shows your speed. I found that my alero goes two miles under the speedometer while my corolla goes two miles over. I don't know if this will help out, but good luck.

Hey Ronin your gonna need to make a program that will do that for you. Its not that hard acctually. You'll read the COM port, take in the large data from its buffer, use something called a token to sift to the forth "," (comma) in the string, save the number in a variable, display that number in a text box. Hope that helps.

BTW, im working on an Alero setup simaler to this, gonna run my own software. Getting Temp sensors GPS and intergrating them all in my own software, but it should be a year till its done.

yeah cro THATS what i speak of. but since im not good in c++ and java i dunno how to realize it. if you write ur own software for the alero i'm interested in it. will it be something like mediacar - but better?

Im doing it in C++, I've got a Motorola interface board that i've used in collage with a CPU on it as well as analog and digital I/O's. I dont have a lot of time but im working on the interface now. Should look pretty good, i hope that i can get this done. Theres a lot of work but it'll be worth it.