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Thread: Rapid Packet Datalogging

  1. #1
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    Rapid Packet Datalogging

    Howdy!

    I'm trying to datalog a vehicle with a Raspberry PI 2 and a USB OBDII connection. I don't seem to get a very high resolution (30ish per sec). How do you enable rapid packet mode (200ish packets a second) Or is the PI 2 just not powerful enough?

    Thanks for any suggestions!

  2. #2
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    Could be the Pi but more likely your adapter... You need to have a fast adapter to get fast readings.

  3. #3
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    Quote Originally Posted by redheadedrod View Post
    Could be the Pi but more likely your adapter... You need to have a fast adapter to get fast readings.
    What adapter is recommended for this? I thought all OBDII adapters were the same. :-(

  4. #4
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    What kind of vehicle are you trying this on?

    30 per second is pretty good, I don't think anything is wrong with your setup.

  5. #5
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    I've tested this on a 2013 Ford Mustang, and a 2012 Lincoln MKz.

    I've seen other datalogger achieve 200 per sec on the Mustang. I'm mainly want to be watching for spark knock and I don't want to miss that event.

    Thanks!

  6. #6
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    I've tested this on a 2013 Mustang, and a 2012 Lincoln Mkz. Trying to watch for spark knock events and I don't want to miss any.

  7. #7
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    Just to update this thread. Like what RedHeadedRod said, not all adapters are the same. The ELM327 is a old and slow chip. I have purchased a new STN1110 based adapter and will report back findings when it get's here.

    Car is a 2013 Mustang, which supports Ford's Rapid Packets or DMR. Just not sure how to access DMR vs standard OBDII.

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