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1997 Nissan MaximaPC

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  • 1997 Nissan MaximaPC

    I've been wanting to install a carputer on my maxima since a very long time, but I never had the experience or the time/patience to install all the equipment. Finally, starting in mid December, I've finished installing my carputer.

    I tried to make this as factory finish as possible without fiberglassing. Also, I tried my best to keep everything intact and not create unnecessary holes.

    I actually never took a picture before I started this project, but here is the closest picture of the stock picture with the original bose headunit.



    Next, are a few computer setup pictures and also my homebrew shutdown/startup controller for the computer. I'll post those schematics soon.


    SPECS:
    • HP Pavilion DV2020US laptop stripped
    • MSNTV box
    • ELMSCAN Compact OBDII Scanner
    • Garmin USB GPS 20x
    • Bluetooth Adaptor
    • Metra Face plate adaptor
    • 40 GB Hard Drive
    • 2 GB Ram
    • Centrafuse 2.1
    • GMPC Plugin







    This next picture is my homebrew startup/shutdown controller. You can see that I used a computer power supply box to put my controller and extra wires inside. It just so happened that that psu fits perfectly and flush with my headunit. The red and black rca cable are connections that I've made on the computer that connects to my power switch and laptop lid switch respectively. More information about this schematic will be posted later.






    INSTALLATION PICTURES

    Here are a few pictures of the install in my car. I decided to put the computer underneath the driver's side seat. I also pulled the wires through the channel underneath the seat along with the seat warmer and seat belt wires.





    This next picture is my obdii connection to the car ecu, followed by gps installation pictures.









    Next, are a few pictures of my power cable going into the cabin followed by hard powered switch pictures.











    Next, my startup/shutdown controller needed someway to determine if the car is on or off. So, luckily I found a telephone acc line that was not being used in the fuse box.





    FINISHING UP INSTALLATION











    FEW SCREENSHOTS











    CONCLUSION

    This project took a while, but I learned that patience is the key. There were a lot of times when I second thought myself if I should continue this project, but I just kept believing in myself. There are still a few small problems that I will fix soon.

    PROBLEMS
    • Need better sound card
    • New Bluetooth Device

    This laptop is actually equipped with a pretty good sound card, but the headphone jack and spdif connection both have a lot of static noise from the hard drive. This is not a grounding issue, but the motherboard fault. I remember when I used to use this laptop, I could hear the static on my headphones as well. I'll probably just get a new usb soundcard.

    Also, the bluetooth device I have is flaky, it works sometimes and sometimes it doesn't. I'll prob just get a new one.

    Lastly, but none the least, I'm going to continue improving the functionality of my startup/shutdown controller. If you have any questions, feel free to ask. Thanks!

    BEFORE



    AFTER


  • #2
    Nice install!!

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    • #3
      very nice. i am impressed . i like it!
      trinybwoy

      2006 Mazda6 Carpc

      2008 Acura TSX Nexus 7

      Comment


      • #4
        Just wanted to say good job on this install as well. I know just what you mean about being half way through the install second guessing yourself too. Kudos.

        Comment


        • #5
          Very nice, your electronics are amazing. ive bulit pc's before but how did you convert your PSU to just red and black. and then get motherboard to have an input of red/black. The ECU is a brilliant idea. Be carful with a USB sound card i bought a cheap one and found it was rubbish and no way of changing the volume so it was constatnly on full. How loud is the PSU ?

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          • #6
            Originally posted by dizzy1 View Post
            Very nice, your electronics are amazing. ive bulit pc's before but how did you convert your PSU to just red and black. and then get motherboard to have an input of red/black. The ECU is a brilliant idea. Be carful with a USB sound card i bought a cheap one and found it was rubbish and no way of changing the volume so it was constatnly on full. How loud is the PSU ?
            Well, its actually not an actual psu. It's just a psu box. Inside it, I've put a microcontroller, with relays to control the power going to the computer and lcd. This microcontroller is always on, monitoring if the car is on or off. If the car is off, it will wait 10 seconds and then execute its shutdown sequence, then cutoff complete power to computer and lcd after 1 minute. If the car is on, it will wait 10 seconds and execute its startup sequence. Here is a demo of it.

            http://www.youtube.com/watch?v=P62gB0DG7zw

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            • #7
              I've been working on the install in my '96 Maxima for about a month now. Yours is looking nice. I'm still chasing down my own problems, poor sound quality, startup/shutdown controller and ELMScan timeout among other things.

              Where did you get that stock looking switch?
              How did you get Centrafuse to read from the ELMScan? Mine won't.
              Attached Files

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              • #8
                Originally posted by ChristopherJ View Post
                I've been working on the install in my '96 Maxima for about a month now. Yours is looking nice. I'm still chasing down my own problems, poor sound quality, startup/shutdown controller and ELMScan timeout among other things.

                Where did you get that stock looking switch?
                How did you get Centrafuse to read from the ELMScan? Mine won't.
                Well, if you look right behind your steering wheel, there is a button that controls the light brightness for your odometer. Next, to it, there is a blank black panel. Take a flat screwdriver and pull it out. It's just this blank panel, cut a small piece out of it and put a switch from radio shack.

                ELMScan timeout, I'm not sure I have the ELMScan 327. In the Centrafuse settings make sure you select the appropriate device (in my case ELM 327) and the speed is 38000. Select auto-connect as off.

                Comment


                • #9
                  Originally posted by kasemodz View Post
                  Well, if you look right behind your steering wheel, there is a button that controls the light brightness for your odometer. Next, to it, there is a blank black panel. Take a flat screwdriver and pull it out. It's just this blank panel, cut a small piece out of it and put a switch from radio shack.

                  ELMScan timeout, I'm not sure I have the ELMScan 327. In the Centrafuse settings make sure you select the appropriate device (in my case ELM 327) and the speed is 38000. Select auto-connect as off.
                  Good job on it. That switch looks stock.

                  Comment


                  • #10
                    Originally posted by ChristopherJ View Post
                    Good job on it. That switch looks stock.
                    Did, you get ur obdii unit working?

                    Comment


                    • #11
                      Originally posted by kasemodz View Post
                      Did, you get ur obdii unit working?
                      Not yet, but I haven't fiddled with it yet. It works with its stand-alone software sometimes, but not inside Centrafuse.

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