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Thread: LF: OBD2 - Import - "Build your own kit"

  1. #1
    Constant Bitrate
    Join Date
    Nov 2000
    Location
    Ottawa, ON, CA
    Posts
    142

    LF: OBD2 - Import - "Build your own kit"

    Has anybody found an OBD2 to PC serial adapter kit (ie. the you-solder type) ?? I'm looking for a REALLY cheap OBD2-to-serial adapter
    -James-

    Tech tips and more - http://www.techguys.ca

    *NIX command for today: rm -rf /bin/laden

  2. #2
    Newbie
    Join Date
    Aug 2002
    Location
    UK
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    33
    Join the club. I just want to be able to read speed, rpm, maybe oil or fuel levels etc. There arent any decent circuit diagrams out there!

  3. #3
    Hosting Guru
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    Oct 2001
    Location
    Atlanta, GA
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    558
    yeah I would love to have one too... now that I've got a xenarc and I'll have a *****'n display if I can find a decent interface I could make some kick *** monitoring program.... mind you this has to be ODB-II that will work with a BMW M3

    -ryan
    -- WireSix, Inc. --
    MP3Car Lives Here!

  4. #4
    Low Bitrate
    Join Date
    Jul 2002
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    89
    Looks like you can get a chip that does all the heavy lifting for $32 from Alex Peper... details here. It should be relatively trivial to add the support electronics. Perhaps one more clever than myself could design a PCB we could have produced. We could wind up with a little kit. Alex even offers quantity discounts on the chip; maybe a group buy? I'm interested.

  5. #5
    Newbie
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    Mar 2002
    Location
    brooklyn ny
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    17
    I found a chip from http://www.elmelectronics.com/

    It looks like it will be easy to connect...but ya probably have to roll your own custom display solution

  6. #6
    Low Bitrate
    Join Date
    Feb 2002
    Posts
    98
    what about OBD1? I haven't seen any connectors or programs for OBD1. is OBD1 just completly differnt? I have a 90' Acura Legend and I would love to be able to monitor my engine from my TFT.
    sv24, 733mhz celeron, 80gig hd, 5.6" MA Audio tft, x10 remote, RF Keyboard.

  7. #7
    Constant Bitrate
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    Nov 2000
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    Ottawa, ON, CA
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    Hmm .. doesn't look too difficult with the chipsets above .. I'll keep searching to see if there is a more direct (perhaps, raw) interface ..
    -James-

    Tech tips and more - http://www.techguys.ca

    *NIX command for today: rm -rf /bin/laden

  8. #8
    Low Bitrate InvisiBill's Avatar
    Join Date
    May 2002
    Location
    Michigan
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    57
    I posted a pic of a schematic for an ALDL-serial converter for my OBDI Syclone a while back. Not sure if all ODBI stuff is the same or what, but it works for me with $8 in parts. Do a search in this forum for ALDL and you should find it. My whole reason for a carputer is to run DataMaster...

  9. #9
    Constant Bitrate jboy's Avatar
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    Oct 2001
    Location
    MA
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    151
    search for LT1 or LS1 F,Y and B body sites there are a bunch of people that can "read" a OBDII PCM but only afew out there that have mastered programing,

    DataMaster
    LT1 edit
    AKM electronics
    If you come out talking sh1t don't try to turn around and wipe you azz.

  10. #10
    Low Bitrate
    Join Date
    Jul 2002
    Posts
    89
    Oh, I think I can program with the best of them. If I can figure out how to make (or where to buy) a low-cost hardware interface, I'll happily write all the code required (and share it with anyone who wants it).

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