Extended OBD II PID logging

Request and discussion on new / to change features
racepace
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Extended OBD II PID logging

Postby racepace » Fri Apr 07, 2017 11:41 pm

Hi,

I was recently trolling data collected by the Harry's Lap Timer Grand Prix app for our last race day and found that fuel level (012F) data wasn't available to be exported. I was hoping to analyze the information to retroactively look at our fuel usage & refueling so that we are better prepared for the next race.

In general, it would be helpful to be able to export all of the avaialble OBDII PIDs within the CSV export. Also, would it be possible to include the PID ID in the column header for clarity?

Thanks!


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Harry
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Re: Extended OBD II PID logging

Postby Harry » Sat Apr 08, 2017 11:30 am

LapTimer requests racing relevant PIDs provided they are available for your car. While LapTimer requests fuel level, many car manufacturers decide to not make it available through the standard PID defined by the OBD II standard. Fuel level is included in export, values are between 0.0 and 1.0 (100%).

- Harry


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racepace
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Re: Extended OBD II PID logging

Postby racepace » Sat Apr 15, 2017 5:30 pm

Hmm, the "FUEL" column was all zeros for the entire session. Perhaps the car doesn't offer connectivity to the fuel level via OBDII (older '03 Merc).

Feel free to delete this thread.


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Mateusz
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Re: Extended OBD II PID logging

Postby Mateusz » Wed Jul 05, 2017 11:05 am

Also, I just learned Ford Focus RS does return TPMS readings via OBD, the PIDs are listed here:
http://www.focusrs.org/forum/18-focus-r ... e-pro.html

Are these logged? Can they be shown live? I guess some formula could even be devised to convert pressure to temperature. It is probably not linear, but some splining would be possible if enough pressure/temp combinations are known for a particular tire.


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Harry
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Re: Extended OBD II PID logging

Postby Harry » Thu Jul 06, 2017 9:10 am

These are custom PIDs. I plan to add this to the next major release (v22, Spring 2018).

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tdott
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Re: Extended OBD II PID logging

Postby tdott » Tue Aug 22, 2017 7:36 pm

Patiently watching this item.

Would love to be able to get oil temps logged on my M3, but it looks like it is not a standard PID defined.


Idunno
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Re: Extended OBD II PID logging

Postby Idunno » Fri May 11, 2018 9:48 pm

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Screen Shot 2018-05-11 at 4.43.00 PM.png (178.15 KiB) Viewed 442 times
On the CSV file, many parameters and gauges gauges are indicating zeros the whole time. 2017 Dodge Challenger Hellcat. I want to log the relevant parameters including coolant temp I/C coolant temp and intake temp in addition to normal stuff.
Screen Shot 2018-05-11 at 4.43.00 PM.png
Screen Shot 2018-05-11 at 4.43.00 PM.png (178.15 KiB) Viewed 442 times
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Screen Shot 2018-05-11 at 4.43.30 PM.png (144.78 KiB) Viewed 442 times


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Harry
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Re: Extended OBD II PID logging

Postby Harry » Sun May 13, 2018 8:10 am

You need a working OBD adapter to get these values. LapTimer pulls channels from GPS, accelerometer, and OBD if available.
See option on www.gps-laptimer.de/compatibility/ios or www.gps-laptimer.de/compatibility/android.

- Harry


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