Originally Posted by Mech33

Apple iOS App Store on an iPhone. Not sure if the Android version is available yet.

Originally Posted by mundman

I can't find it! What's it called?

Originally Posted by mundman

I can't find it! What's it called?

Originally Posted by Zucc

My original order was a 2014, when they bumped me to a 2015 they honored the original price since I had speced that car with Sports Chrono.

Originally Posted by Mech33

Thanks again for the effort! Any chance you'd be willing to post a link to an example datafile output (or perhaps email it via PM)? I'm curious on how much data is available, what the data rate is (especially on the position tracking), etc.

The main potential complaint with this Porsche Track Precision solution is that the GPS data rate is too low (1 Hz from the phone, or 1 Hz from the car's GPS), compared to the 10 Hz or 20 Hz of the "professional" VBox systems.

Originally Posted by provoke

Here ya go.. There are 3 images. 2 are of the data points and 1 is of the "lograte hz" error.. I put in1hz based on ur comment but the speed is way off.. I wasn't doing over 100mph on a 25mph road.. I think I was doing about half of that..

Originally Posted by Mech33

Thanks. What's the file format? Could you just post the data or link to the log file itself? I assume the position coordinates are embedded in the file along with time stamps showing the log rate.

Originally Posted by provoke

.vbo you can also export in .csv and .kml or Porsche track precision app. Let me go over the file.. I just don't necessary want to post the logfile if it contains my vin#.

Originally Posted by Mech33

Sounds good. If you could export in CSV and then just paste some of the lines here we should be able to tell the logging rate for position (if it is in the file, that is).

Originally Posted by provoke

Try this....

https://www.dropbox.com/sh/hznnblbsb...9TARktHTa?dl=0

Originally Posted by orthojoe

Based on the data in that file, it looks like output at 10Hz, which means lap times are accurate down to 0.1 seconds.

However, it's not clear if data points are interpolated. Harry's lap timer interpolates data points, IIRC.

Originally Posted by orthojoe

Based on the data in that file, it looks like output at 10Hz, which means lap times are accurate down to 0.1 seconds.

However, it's not clear if data points are interpolated. Harry's lap timer interpolates data points, IIRC.

Originally Posted by provoke

When I load the file at 10Hz it has the max rate of speed at 105mph.. Something is off.. I recall maybe doing like 65or so...

Originally Posted by Slip

Looking for the best way to mount the iPhone for video duties so that it can link / feed video to the track precision app. Have just ordered this setup:

http://www.optrix.com/store/roll-bar-xd5-bundle/

I got the cage mount but you can also get it for a dash or windscreen mount.