12 replies to this topic

[davecarama]

Just downloaded it to my iPhone. Pretty cool app. The data is pretty good and it even logs video. There are a bunch of hardware attachments you can use (like OBDII plug and external GPS antennas).

This is a sample video I tried out to see what the data overlay would look like. It is pretty cool gadget! I faced the camera to me because I don't have something to mount it to the dash facing out yet.

http://youtu.be/bN3vTg8hoKs


It tells you your sector times, how you did compared to last time you were in that sector (or fastest lap) and shows you lap times. Pretty nice!

Yeah, my lap times are slow... So what

Dave

[Don]

I used Harry's Lap Timer for the first time this weekend at CMP (w/ an external GPS sensor). I had a few issues on Saturday with the start/stop trigger on the default CMP map layout. A few people at the track with Harry's Lap Timer had this issue. We ended up manually marking the start/finish line when no cars were on track and it worked great after that. I have not used it for video yet. Like I mentioned, it works great ... especially considering how cheap it is (even with the external sensor).

[ryoung99]

<sup>Has anyone gotten the OBD data for Harry's Lap Timer to work with a pre-1996 Miata?
I see that the app will recognize an OBDII reader, pre-1996 are ODBI readers. I have a OBDII gopoint cable on the way with a OBDI (Mazda specific) to OBDII output interface cable on the way. I hope it works as it would be great to get the computer data into the app.

From what I see if you have a post 1996 Miata, this app would work for you almost as well as the costly systems.
We will be trying the app and OBDII reader out on our 24 Hours of Lemons car in a few weeks (Eagle Talon 1996).

Thanks,
Rick</sup>

[Don]

^{Has anyone gotten the OBD data for Harry's Lap Timer to work with a pre-1996 Miata?
I see that the app will recognize an OBDII reader, pre-1996 are ODBI readers. I have a OBDII gopoint cable on the way with a OBDI (Mazda specific) to OBDII output interface cable on the way. I hope it works as it would be great to get the computer data into the app.}

Keep us updated on how this works for you. I did not think it was possible on non-OBDII cars, but would like to have the functionality also.

[ryoung99]

Keep us updated on how this works for you. I did not think it was possible on non-OBDII cars, but would like to have the functionality also.

Will do, I should have all the stuff this weekend, when I get back from hawaii I will hook it all up and run the car around the block to see what works.

[dstevens]

ODB and ODBII are different animals. Unless there is some sort of middleware in the adapter cable or the Harry program can speak Mazda specific ODB1 it's likely not to have full functionality. Looks like you could still do the video and timing, just not anything from the ECU. I'd be interested to see if you can get it to read ODB1. A big issue with ODB1 was that everyone pretty much went their own way and it didn't start to standardize until later versions. Even with ODBII there are still VIN specidic codes but at least the primary sets of P codes, etc are standard.

[cpdenis]

Pretty cool.
What I-Phone version are you using?
Any ill effects (for the phone) with the heat inside the cabin?
Are you running it plugged into a power source?
What and where do you get the OBD-II sensor?
What and where do you get the external GPS sensor?
What does the external GPS add compared to no external GPS?
Can you transfer the data to another device?

Thanks for all your help

CP

[Don]

I have used it with the iPhone 4. I had no issues with heat in the cabin (had my phone mounted up high on the windshield). I did not have the phone plugged into a power source in the car, but I also have not used video either (would probably drain the battery faster). I can not comment on the OBDII adapter, my Miata is a '94.

I use this http://www.amazon.co...45923789&sr=8-2 bluetooth GPS adapter. It has a higher sampling rate that the internal sensor on the iPhone (more accurate). You can transfer data via email from the device and there is also an iPad app (cost extra ... of course) to view the results on a larger screen.

[cpdenis]

Thanks, I appreciate the information.
CP

[DrDomm]

I use the iPhone (4S) internal GPS sensor. One time, the program stopped/crashed. Otherwise, no problems. Times are very close (within 0.1s) to transponder data.

I don't use the phone for video. Typical session prolly uses 25% of battery.

[davecarama]

Here is a video pointing out the front window (this was an HPDE, and I was playing with a friend who was a little timid in some spots... and it was pass with a point by)

Not sure you 'll be able to see it (stupid facebook)
https://www.facebook...151210151379120

It has some awesome data to review too:

Track Map:


Speed graph:


Lat Accel:


You can zoom in on a particular piece of any graph (see map in background) and see what you did in that specific section of the track:


Lineal accel:


Lineal accel (zoomed in):


Alt changes:

[Go Time Racing]

I have never used Harry's Lap Timer, so I have no opinion on it. I have however used Ian Hawkins App 'Torque WIKI' on my Android phone. (Motorola Electrify). Then I use an add-on called 'Track Commander'. I purchased a generic OBD2 wireless adapter off of Ebay ($25) which works great. I use this App almost daily to diagnose and monitor engine systems in my real job. It reads fault codes, does live data stream, data recording, etc...

With the Track Commander add-on, I can use my phone as an in-car camera, and set-up any data or gauges that is monitored on the video. I can also record a GPS picture in the video as well.

This set-up gives great video with my phone, and is very inexpensive. The app is $5, the adapter was $25, the Track Commander add-on is a free upgrade, and the cradle was $25. For around $55, I get in-car video and data recording with tons of options for customization.

Here is a link for Torque Pro: http://play.google.c...wl.torque&hl=en

Here is a link for the Track Commander add-on: http://play.google.c...ecorder#?t=W10.

 TrackCommander.jpg   29.96KB   17 downloads

[WilsonSteele]

Ive used harrys lap timer for years, and always found it to be within .02 of the track times, from the palm days to the ipod days now.
I highly recommend it as an in car lap timer.
It is not yet a full replacement for an aim or traqmate system, especially in data analysis in the pits.

BUT, he has a new version out in march of 2013, and remember it is almost 1/20th the cost of "real" data systems.

And his customer service is fantastic, he has a great message board, forum, faq,etc, and its like he never sleeps.