Mobile Phone GPS Lap Timing

Anything to do with the MX5 and Motor Sport

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Damo
Fast Driver
Posts: 232
Joined: Tue Mar 25, 2008 12:39 pm
Vehicle: NB8A
Location: Thornbury, VIC

Mobile Phone GPS Lap Timing

Postby Damo » Thu Apr 30, 2009 8:19 pm

Guran wrote:Thanks Damo. I thought it must have been something like this.

Well, I presume that's the case.

Guran wrote:Not that I've noticed. The software has been updated though, and perhaps there's an option to extrapolate to 1/100s. I'll check. The Vbox and similar units log at 100Hz, so they do report to 1/100s. But they cost a hell of a lot more!

If they use interpolation (and I'd imagine they would because it's not exactly difficult or computationally expensive to at least use linear interpolation of speed) then 10 Hz is fine for laptiming but the VBox would get used for more standing start logging in which case you need the high sampling frequency for accuracy.

Guran wrote:It's a cool toy alright. Have you earmarked your Kruddy payment yet?

Already gone to fixing the car and I need new tyres, brake pads, rotors... and saving to go overseas so it's not gonna happen any time soon unfortunately. :cry:
NB8A (2000 Highlight Silver), KU36, Kaaz LSD, QFM A1RM, Mazda Competition engine/differential mounts, Town & Country cat-back.


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