iphone lap timers
08-02-2009, 07:57 PM
#2
Rennlist Member
My buddy used "Harry's" this past week, once you realize you have to put the start/finish as a POI I guess it's pretty darn nice for $5.00! Good strong velcro on the dash works...
08-02-2009, 09:14 PM
#3
Drifting
Will it give you anything besides lap time?
08-02-2009, 09:25 PM
#4
Rennlist Member
08-03-2009, 12:41 AM
#5
Instructor
Join Date: Jan 2006
Location: Minneapolis
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A couple of mediocre reviews at the iTunes store.... How did it work for you guys?
I would imagine putting it in a good spot where it can see the satellites would make a difference.
Seems pretty great if it does the job....
I would imagine putting it in a good spot where it can see the satellites would make a difference.
Seems pretty great if it does the job....
08-03-2009, 01:54 AM
#6
Race Director
I've used "trackday" a little bit....but sometimes it takes a LONG time to achieve a start finish point....so it might not be right at start-finish...it might be somewhere else...but will use the same point every lap after that...
08-03-2009, 02:05 AM
#7
Three Wheelin'
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The iphone GPS does not use satellites, it uses cell phone towers.
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08-03-2009, 02:31 AM
#9
Three Wheelin'
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EDIT-I have a 3GS
EDIT 2- Looks like you're right, but it didn't work for me this past week. http://www.apple.com/jp/iphone/features/gps.html
08-03-2009, 05:53 AM
#10
Drifting
The mountains probably blocked the satellites, too, or at least impeded the reception from enough of them so you were unable to get enough for reliable location fixes.
08-03-2009, 11:53 AM
#12
Rennlist Member
08-03-2009, 12:22 PM
#13
Burning Brakes
I bought the g-tac pro app. Used it once. While I am sure that there is some decent accelerometer data in the output that someone with talent could use, as a lap timer, it just doesn't work well enough. I suspect that the iPhone doesn't poll its gps position frequently enough for this to work reliabilty. The lines on the application output follow the track inconsistently and the speed data seems off. I think that the iPhone hardward (3G) is simply not up to the task.
08-03-2009, 01:38 PM
#15
Drifting