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OBD2 interface based on Max232/Max233??

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  • OBD2 interface based on Max232/Max233??

    Does anyone know of a circuit based on a max232 or max233 chip to interface with OBD2, i see enough circuits based on opto isolators but i cant seem to get them to work

  • #2
    Hi you can use the MAX232.
    Professionals built the Titanic, an amateur built the Ark.

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    • #3
      Originally posted by racemier
      Hi you can use the MAX232.
      U Know of a circuit??

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      • #4
        Hi,

        You can download from this link:

        http://users.pandora.be/racemier/VAG...20inteface.zip

        I'll leave it there for two days.
        It's a working (use it myself) straight interface = what goes in comes out.
        It's connected to K and L line. Don't forget that your software needs to do the initialization etc... I'm currently working on the code for my PIC controlled interface which will do the initialization for you and the anoying baud rates (5baud and 10400baud)

        Rogier
        Professionals built the Titanic, an amateur built the Ark.

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        • #5
          This one uses fewer parts.

          http://www.skpang.co.uk/highspeed-iso9141.htm
          2004 4runner

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