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  1. #1
    TheGunMan's Avatar
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    F**k it, I made my own data logger

    Hi,

    May be some of you noticed that I asked "strange" quetsions in the past few days. This is because I am building my own data logger for my ski.

    I had the base since I builded GPS logger for aerobatic aeroplain few months ago so this was my pivot point.

    The logger is about 80% ready.

    It will log at 10hz and will record the following data:

    time
    date
    latitude
    longitude
    elevation
    speed
    angle /compass/
    number of sat's locked
    3 axis G force and combined total G force /this one left after airplain project/
    exhaust temp
    coolant temp
    TPS
    MAP
    IAT
    RPM
    fuel pressure - sensor has to be installed
    AFR - AFR controller is needed, I will use my dynojet AFR output for this
    max speed for the log session
    max RPM for the log session
    0-60 time
    atmosphere pressure
    engine bay temperature

    It will have simple 4 rows by 20 symbols LCD display so I can see the data in real time during the ride.

    It will also have 16 000 pulse speed signal output so I can log speed on my dynojet /this can be done for the stock speedo if I find out what signal the ECU expects from the speed sensor/.

    All the data will be logged on micro SD card

    What is left to be done is to clean and optimaze the code a bit and to make RPM convertor, engine bay temp /this is easy/ and atmospherie pressure /also easy/.

    The RPM part won't be ready for the weekend since I have no time to look for parts and make the RPM convertor but the rest should be ready for water test this weekend /no display will be used during the test since I have hard time to vind enclosure for it/. The device was tested in car /no sensors/ and works very good.

    I wanted to share this with you and I am sure some of you will find it interesting

    Stay tuned and will post results of the progress, tests and log files


  2. #2
    rxtmike's Avatar
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    Oct 2005
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    edison n,j,
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    NICE JOB

  3. #3
    badjoka's Avatar
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    Jun 2009
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    Fairfield, CT
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    Subscribed!

  4. #4
    boost junkie skidoochris's Avatar
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    Mar 2012
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    Davison, Mi
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    you need the stuff from the cmd
    injector duty cycle, amount of change

  5. #5
    It is fairly important to have either injector duty cycle or injector pulse width to find fueling issues.

    Andy

  6. #6
    imp0ster's Avatar
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    Dec 2011
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    Quote Originally Posted by whittlebeast View Post
    It is fairly important to have either injector duty cycle or injector pulse width to find fueling issues.

    Andy
    weird how I currently don't have that with a $500 logger yet a $25 bluetooth ODBII plugin and a phone app can do this. Get where I'm coming from here?

    BTW badass man. That's a nice skill set and one I surely don't currently posses

  7. #7
    Quote Originally Posted by imp0ster View Post
    weird how I currently don't have that with a $500 logger yet a $25 bluetooth ODBII plugin and a phone app can do this. Get where I'm coming from here?
    This is all driven by what is supplied by the factory and a what data rate on the line you are watching. I have found that 20 samples per sec is enough for most quick changing channels. Most ODBII channels are way slower than this. My Acura and my Toyota is in the 2 samples per sec range.

  8. #8
    imp0ster's Avatar
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    I don't understand the cost of the VTECH Logger vs its functionality. With my HP Tuners I got one hell of a tuner plus a killer logger.

    This guy just built his own

  9. #9
    Sanfish's Avatar
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    Subscribed! You should consider a kickstarter!


    Quote Originally Posted by imp0ster View Post
    I don't understand the cost of the VTECH Logger vs its functionality.
    What you are paying for is support

  10. #10
    imp0ster's Avatar
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    Quote Originally Posted by Sanfish View Post
    Subscribed! You should consider a kickstarter!


    Quote Originally Posted by imp0ster View Post
    I don't understand the cost of the VTECH Logger vs its functionality.
    What you are paying for is support
    Support huh? Maybe you should do some reading before making statements like that.

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