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Guest Croccy22
Posted (edited)

Just a simple program designed to be a digital speedometer for the car.

Things I already know: The 0-60 function doesn't do anything yet, The speed is currently in knots and not mph, The exit function seems to have problems closing the serial port so you have to restart your phone.

Basically just want someone to test to see if it reads the data succesfully from a bluetooth gps device.

Would test it myself but my gps has broken and my new one isn't coming until next week.

If you havn't already done so you will need to install the .net cf from microsoft which can be found here:

http://www.microsoft.com/downloads/details...&displaylang=en

Then copy the gps2.exe from this thread and stick it on your storage card or something.

Pair your bt gps and create an outgoing serial port (Make a note of whether you use COM6 or COM7)

Launch the gps2.exe using filemanager. Choose options and select the com port you have choosen.

If all goes well you should see the NMES GPS data and the bottom of the screen. The time should display the gps fix time (Think it is UTC). And the speedometer should now work.

If anybody can be bothered to do all that them please let me know if you get it to work.

Cheers,

Matt. Croccy22.

GPS2.exe

post-1840-1139153133_thumb.jpg

Edited by Croccy22
Guest ElGato65
Posted

It runs and displays speed. (Only walked around with it).

Guest Croccy22
Posted

Thanks for the test.

I've only been able to transmit NMEA string to it via hyperterminal, but at least now i know it works.

Gonna start on the 0-60 timer now. Push the button whilst car is stationary, then floor it. Phone will display your 0-60 time with reasonable accuracy (Hopefully).

Will post another version once i have got rid of some of the bugs and added some more functionality.

Matt.

Guest newtonmj
Posted (edited)

Is there really a need for the user to press a button when stationary? Presumably you'll know when the car isn't moving, and when it starts, so why the user input?

However, and perhaps a little more fundamental to the (in)accuracy of measuring 0-60 times, have you considered the effect of the GPS receiver only updating every second? I was under the impression this is standard across all receivers?

Mathew

Edited by newtonmj
Posted

tryed it but all i get is an error and the application closes , i get this when choosing the com on the menu. :| looks cool though :)

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