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USB OBD II lead - Acts like a serial to usb converter?

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  • USB OBD II lead - Acts like a serial to usb converter?

    Hi guys,

    Looking around for OBD II leads. A friend of mine has one. Its serial. and works pretty well. I bought a van a few days ago (first buy) and it has the OBD II port, we tested with his lead and it all works perfect.

    He got his from ebay (where else? :P) some time ago. I went looking for a similar lead but unfortunately i can only find that lead with the usb end on it. Is it safe to say that a usb lead qwill just act like a serial to USB converter? and i can access it from programs by selecting com 3 or 4 or which ever it might be?


    Thanks,
    - Paul

  • #2
    most leads these days are usb , the older serial leads like vagcom work fine but the newer ones that are usb work with later versions of the programs , i have 3 different leads for my car all are usb and when installed show as usbto serial converters and yes they are configrable on different com ports

    Comment


    • #3
      thanks a mill,

      Now Time to go look for a good elm 327 (for cheap)

      Any recommendations? :P

      cheers again,
      - Paul

      Comment


      • #4
        Originally posted by bluenarf View Post
        thanks a mill,

        Now Time to go look for a good elm 327 (for cheap)

        Any recommendations? :P

        cheers again,
        - Paul
        You get what you pay for. You could buy a cheap ebay deal for $20-$30 and have about a 50% chance of it working, or you could pay $85 for one of these: http://www.obdpros.com/ And have 100% chance of it working. You can even choose between USB (virtual serial port in windows) or true serial. I've been using mine for about a year now constantly, and it has zero issues.
        "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
        RevFE
        My Shop

        Comment


        • #5
          You know what. Your perfectly right. Ebay is great for cheap and equally bad stuff!

          The only question left now, is: Do i go for USB or True serial?

          Considering i might be doing some application writing with it and interfacing to carpc (probably linux) would it be wise to go for true serial?

          If i ever do need it to be usb i suppose i can use a USB to serial converter.

          So i think i'll go with true serial from that website you listed.
          Any objections?

          :P

          cheers for the info
          - Paul

          p.s the ELM 327 works with most software?

          Comment


          • #6
            Originally posted by bluenarf View Post
            You know what. Your perfectly right. Ebay is great for cheap and equally bad stuff!

            The only question left now, is: Do i go for USB or True serial?

            Considering i might be doing some application writing with it and interfacing to carpc (probably linux) would it be wise to go for true serial?

            If i ever do need it to be usb i suppose i can use a USB to serial converter.

            So i think i'll go with true serial from that website you listed.
            Any objections?

            :P

            cheers for the info
            - Paul

            p.s the ELM 327 works with most software?


            Most software I've seen works for the ELM chip, it's usually listed as being "elm compatable".

            Personally, I'd go USB. The USB elm shows up as a virtual serial device similar to how it does in windows, so you access it as if it were a serial device (if I recall correctly, it's been a while), and this leaves your serial port open for other cool projects . I went serial and now I need to get a 4 port serial to usb hub so I can attach my I/O board.

            I wrote a linux OBD2 library for interfacing with the ELM327, if you are interested (and know c++) I could help you get started
            "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
            RevFE
            My Shop

            Comment


            • #7
              Usb sounds like the one then.

              I just so happen to know C++, i have no immediate plans to start any projects with it. But when things get a bit quieter with work/school etc i plan to do something exiting.

              Comment


              • #8
                I'm actually using a bluetooth one, which also presents itself as a serial port.

                FWIW, I saw linux got a mention above. I've been working on this tool: OBD GPS Logger
                which has a little thread on this very forum, here

                Gary (-;
                OBDGPSLogger, for logging OBDII and/or GPS data
                OBDSim, an OBDII/ELM327 software simulator
                mp3car forums: obdgpslogger, obdsim

                Comment


                • #9
                  Well, I took the bull by the horns and went and ordered myself an OBDpros usb interface..
                  Hope they're fast posters!
                  thanks for all the advice guys

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                  • #10
                    Cable arrived this morning. And just as i suspected it doesn't work with my WIN 98 laptop. Good old NTKERN.VXD wont load the drivers.. whatever it means by that... I knew i shouldhave gone with the serial. But there you go. My advice to anyone is to go with the serial version!!

                    - Paul

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                    • #11
                      Check to see what kind of serial to usb chip it has. Perhaps the manufacturer might have a win 98 driver
                      "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
                      RevFE
                      My Shop

                      Comment


                      • #12
                        Yea, they had shipped a win98 driver with it. It didnt work. I sent them an email and 2 driver sets later i have it working!

                        Comment


                        • #13
                          Awesome. Glad to hear it
                          "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
                          RevFE
                          My Shop

                          Comment


                          • #14
                            thanks... now i just need some problems to develop in my engine :P

                            Kidding!!

                            Comment


                            • #15
                              thanks... now i just need some problems to develop in my engine :P
                              Take your fuel cap off and drive four hundred yards.

                              No, really.

                              Gary (-;
                              OBDGPSLogger, for logging OBDII and/or GPS data
                              OBDSim, an OBDII/ELM327 software simulator
                              mp3car forums: obdgpslogger, obdsim

                              Comment

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