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View Full Version : Gps Speedo / Odometer

RoninKouga
07-20-2005, 04:49 AM
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?
RoninKouga
07-22-2005, 10:34 AM
anyone?
snake_eyes2
07-22-2005, 11:18 AM
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
07-23-2005, 01:20 AM
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.
Crolero
07-25-2005, 02:07 AM
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. :thumb:

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. :(
RoninKouga
07-25-2005, 06:52 AM
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?
Crolero
07-25-2005, 01:35 PM
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.