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Thread: OBD USB or LPT1 Connectors?

  1. #1
    Low Bitrate Ritalin Kid's Avatar
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    Question OBD USB or LPT1 Connectors?

    I finally found the OBD connector on my 84 Cadillac but the OBD cables I find are all made for Serial ports and since I have an FV24 and a Xenarc touchscreen the only serial hook up I have is taken so I was curious is there was a OBD to USB or Firewire or etc. optional cables you can buy to hook the computer into the OBD of my car or if it would be possible to get an adapter to change the printer port to a serial port if it would work properly.

  2. #2
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    Just pickup an USB to Serial for your FV24.

    I've seen them for around $30, but your mileage may vary. (No pun intended.)

    -Mario

  3. #3
    Low Bitrate Ritalin Kid's Avatar
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    Don't you mean serial to USB? I hope.. where can I find one?

  4. #4
    Maximum Bitrate allenruble's Avatar
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    here were you can get one from free shipping serial to USB more here
    www.sounddomain.com/id/2000mp3ranger

    Mp3 player - 10.4 Allbrite Gigabyte GA-71XEH , 700 mgz t-bird , coolmaster fan , 2x 128 ram + 1 512ram , ATI-RAEON RV100 ,on bd sound , Linksys Wireless-B usb network adapter , 20G IBM TRAVELSTAR

  5. #5
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    I knew you'd say that as soon as I hit submit...

    Yes, most local computer chains carry them in stock...

    Mail order will be a little cheaper as the last post showed...

    -Mario

  6. #6
    Constant Bitrate jboy's Avatar
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    you may have problems with the serial to usb converter and reading / flashing your PCM, look on some sites thst do PCM programing, something to do with the datastream in and out of the PCM not working right.
    If you come out talking sh1t don't try to turn around and wipe you azz.

  7. #7
    Low Bitrate Ritalin Kid's Avatar
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    That's what I was afraid of but if the serial to USB adapter would work with my Xenarc Touchscreen's serial connector without a problem then that would free up the serial port for the OBD cable.

    I swear though I still can't seem to find a OBDI cable and software everytime I google it I get sites for OBDII.

  8. #8
    Low Bitrate InvisiBill's Avatar
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    I posted a Techedge schematic here for one.

  9. #9
    FLAC cproaudio's Avatar
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    Try keyspan They have 4 port serial to 1 usb. Thats what I'm using to run my Xenarc touch, OBD-II scanner, Garmin GPS16, Cliffnet Wizard, and NCD relay control module (still need software, someone who knows VB please help) It works very well. You can configure the port numbers.

  10. #10
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    Arrow OBD-II USB Interface

    I've been Googling to find a business that sells USB to OBD-II interfaces. For the last several weeks I've been silently reading the forum and from numerous posts to this forum, I've gathered that the generally practiced solution is to use an RS232-to-USB converter. I would rather not use the converter, but I will if I have to. Here are the most promising leads that I've uncovered:

    A German site (I don't speak German):
    http://www.diagnose-system.de/obd-usb.html


    Ross-Tech sells adapters that incorporate a dongle for exclusive use with their VAG-COM software:
    http://www.ross-tech.com/vag-com/hex-usb.html
    "This interface requires a special driver to be installed on your PC. It does not emulate a COM port. That means this interface will not work with any other software besides VAG-COM. "

    Sensolutions makes the connectors, but I don't know if they sell them directly:
    "One of our adapter designs (TWIN-COM) is licensed to Ross-Tech, home of the VAG-COM Diagnostic Software, on an exclusivity basis."
    I've submitted a request for information to them regarding availability and possible driver issues.

    Does anyone have any knowledge concerning the existence of a USB connector for OBD-II, or shall I drown in a torrent of "just use the serial-to-USB adapter" replies ? Is there a fundamental timing or driver issue that is preventing the migration to USB?

    -Stephen Wilcox
    Up and running in my Altima:
    VIA Epia M10000
    Casetronic C134
    Octanium 70w PSU
    Travelstar 40g 2.5" HD
    Teac DW-224E slim DVD/CDRW
    Globlink RF wireless keyboard/trackball

    Coming soon:
    Unbelievable new touchscreen solution!

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