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Data from the car engine

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  • Data from the car engine

    Is it possible to capture data from the engine, for example speed, rpm, oil pressure, etc? And then interface it with our carputers?

  • #2
    Yes, using either OBD or OBD-II depending on the age of your car.

    What would you want to do with that data?

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    • #3
      I would want to display it on my lcd screen in my car, maybe log some info...mostly just display. Anyone have any way of interfacing the obd 2 connector with a parralell or serial port?
      Shuttle SV-24 (Plexiglass case)
      5 Gig Laptop HD (Now Dead)
      256 Ram
      466 Celeron (1 Gig Toasted)
      7" 16:9 touchscreen LCD
      Firewire Slot Load DVD
      700W Inverter (Power to spare)
      Monster Cap
      Sproggy Shutdown Controller
      Custom Fiberglass Console (Idea Junked)

      Still Need: GPS, and some kick a@# software!

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      • #4
        You need a protocol converter that connects to serial port of your computer.

        The one I have is from this guy Dan Harrison, http://www.ghg.net/dharrison/obdscan.html I won't recommend buying that guys product. He is an ******* and never replied to any of my emails or phone calls regarding problems with his buggy software.

        I wrote my own interface software in visual basic because his was so bad and I was looking to export those variables on something like and LCD screen so I could keep an eye on things.

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        • #5
          Do you have any pictures of your software interface? If so...please post! Am very intrested in your setup and im sure others are. If you would not mind showing us how far you have gotten with the external lcd idea, it would be really appreciated.
          Shuttle SV-24 (Plexiglass case)
          5 Gig Laptop HD (Now Dead)
          256 Ram
          466 Celeron (1 Gig Toasted)
          7" 16:9 touchscreen LCD
          Firewire Slot Load DVD
          700W Inverter (Power to spare)
          Monster Cap
          Sproggy Shutdown Controller
          Custom Fiberglass Console (Idea Junked)

          Still Need: GPS, and some kick a@# software!

          Comment


          • #6
            Hey thanks for the infomation. I was planning on writing software that would turn the data into a nice grapical format. As well as logging. How do you find out if your car is OBD or OBD-II?

            Comment


            • #7
              If your car is a 1996 or newer it uses OBD-II. OBD-I was used in cars before 1996, I don't know how far it goes back.

              In my little program I'm trying to find a way to calculate real time miles per gallon. I understand it's some relationship between engine load and the mass airflow senor. But I have no idea the formula used to calculate it. Can anyone offer insight?

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              • #8
                Does anyone know of a cheap source for the interface to the computer. It would have to be OBD-II generic. Thanks

                Comment


                • #9
                  http://www.obdii.com/

                  try here as a start . there are others around if you search . if you find a circuit or more info please share ;-))
                  Volvo V40 Phase 2 2002. T4 turbo upgrade.... currently no mp3 or carputer..... researching options

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                  • #10
                    Try http://www.andywhittaker.com/ecu/obdii_hardware.htm
                    or
                    http://www.obd-2.com

                    both a pretty cheep, one offers student discounts.

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                    • #11
                      What about OBD1? does anyone recomend any sites for information and products for older cars? (90' Acura Legend)
                      sv24, 733mhz celeron, 80gig hd, 5.6" MA Audio tft, x10 remote, RF Keyboard.

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                      • #12
                        Well I found this for 122.00 for ford, gm, or generic. It comes with software as well. Although I don't know how good / user friendly it is.

                        http://www.obd-2.com/

                        Comment


                        • #13
                          I'm looking for a cool project for a class.
                          How much of a student discount do you think they offer?
                          Clarion 200watt head unit w/ Aux in.
                          Kicker 800watt 4 channel amp
                          In a 96 Grand Prix SE.

                          Comment


                          • #14
                            Originally posted by lstrunk
                            How much of a student discount do you think they offer?
                            I think it's somewhere around $80. Very good considering I paid around $170

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                            • #15
                              odb-2
                              I have Alex Peper's ODB-2 (www.odb-2.com). I've used it on my 2k maxima and 2k pathfinder.

                              When I first got it, it worked great.. We did a group deal and I ended up paying about $70-something. He does great discounts on group deals.

                              The last version of the software seems to have some timing problem with my max. Actually, there is nothing wrong with his program or interface, but I think he changed the default parameters for some other make's compatibility.

                              As it is, it disconnects every 20-40 seconds. Same with 2k2 maximas. However, some other member on maxima.org played with the parameters and got it working great again. I do not know those parameters off the top of my head, but they are on maxima.org forums.

                              I still recommend the package because it works, its cheap and Alex does support it. Just know that might have to play around with the parameters. Actually, I have faith that he will get the program plug and play again for Nissans.
                              G35C, still analog at the moment...

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