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  • carputer shuts off after 30 seconds except when engine is on

    Just today installed my carputer
    Everything functions normally except that the computer will turn off (go into hibernate actually) after 10-40 seconds (seems random) when I dont have the engine on (only accessory power). Then 2-3 seconds later it comes back on and does the whole thing over again.

    When I turn the engine on, the computer stays on like it should

    My first guess was that it was the battery; not able to put out enough juice
    It's an Interstate

    PSU is an Opus 150W



    Any help is much appreciated
    2004 G35 Coupe project

  • #2
    Originally posted by aoLhaTer
    Just today installed my carputer
    Everything functions normally except that the computer will turn off (go into hibernate actually) after 10-40 seconds (seems random) when I dont have the engine on (only accessory power). Then 2-3 seconds later it comes back on and does the whole thing over again.

    When I turn the engine on, the computer stays on like it should

    My first guess was that it was the battery; not able to put out enough juice
    It's an Interstate

    PSU is an Opus 150W



    Any help is much appreciated
    What kind of system do you have?
    AMD XP 2600+/512MB RAM/120GB hard drive
    Opus 150W/DVD/GPS/7" Lilliput TS/802.11g/Bluetooth
    Installed.


    -GPSSecure- - GPS Tracking
    -AltTabber2.2.2- - Handy touchscreen utility.

    Comment


    • #3
      Epia M10000
      WD600BB
      1x256MB
      Belkin 54g PCI
      2004 G35 Coupe project

      Comment


      • #4
        Originally posted by aoLhaTer
        Epia M10000
        WD600BB
        1x256MB
        Belkin 54g PCI
        Hmm odd. Mine does the same thing but I think it is becuase I am drawing too much power. You aren't running much that would take a lot of power.
        Bytheway I hate AOL too. I work for MSN
        AMD XP 2600+/512MB RAM/120GB hard drive
        Opus 150W/DVD/GPS/7" Lilliput TS/802.11g/Bluetooth
        Installed.


        -GPSSecure- - GPS Tracking
        -AltTabber2.2.2- - Handy touchscreen utility.

        Comment


        • #5
          i have an opus 150w too and it does the same thing. i put tested the voltage on the switched 12v line and when my engine is on it's right around 12 but when the engine is off it fluctuates between 11 and 12. i thought that was why it was doing it. this weekend i'm going to see what happens if i change my grounding location.
          my car: 2003 g35 coupe, 2.5ghz c2d cpu, gigabyte micro atx mb, dsatx
          wife's car: 2004 honda accord coupe 2.4ghz p4 cpu, asus micro atx mb, opus 150
          company car: 2006 chevy avalanche 2.0ghz p4 laptop, cnx p1900

          Comment


          • #6
            I took a meter and tested both the accessory line and battery line
            they fluctuated but thats natural
            battery was 11.78 with computer off, 11.54 with computer on


            i thought maybe the opus was powering down the pc because it thtought the battery was below 11v (has built in protection)

            For power (12v batt and ground) I tapped off of the power antenna
            For 12v access I ran a 18awg line from my headunit to the trunk (was no access line in the trunk and didnt want to bother hunting for one elsewhere)
            2004 G35 Coupe project

            Comment


            • #7
              i also had some problems with my turn signals where they worked sporadically, sometimes not at all
              last two trips theyve worked fine but at first it was iffy

              maybe it has something to do with my problem



              would it have anything to do with me using 18 gauge cable for 12v batt and ground? (its all i had)
              2004 G35 Coupe project

              Comment


              • #8
                Originally posted by aoLhaTer
                i also had some problems with my turn signals where they worked sporadically, sometimes not at all
                last two trips theyve worked fine but at first it was iffy

                maybe it has something to do with my problem



                would it have anything to do with me using 18 gauge cable for 12v batt and ground? (its all i had)
                Doubt it.
                AMD XP 2600+/512MB RAM/120GB hard drive
                Opus 150W/DVD/GPS/7" Lilliput TS/802.11g/Bluetooth
                Installed.


                -GPSSecure- - GPS Tracking
                -AltTabber2.2.2- - Handy touchscreen utility.

                Comment


                • #9
                  then wtf is it?!!?! arghhh
                  2004 G35 Coupe project

                  Comment


                  • #10
                    I have the same behaviour along with another problem I posted. I guess I need to check my voltages too.

                    Comment


                    • #11
                      Originally posted by aoLhaTer
                      then wtf is it?!!?! arghhh
                      You've got me on that one.
                      AMD XP 2600+/512MB RAM/120GB hard drive
                      Opus 150W/DVD/GPS/7" Lilliput TS/802.11g/Bluetooth
                      Installed.


                      -GPSSecure- - GPS Tracking
                      -AltTabber2.2.2- - Handy touchscreen utility.

                      Comment


                      • #12
                        Originally posted by aoLhaTer
                        i also had some problems with my turn signals where they worked sporadically, sometimes not at all
                        last two trips theyve worked fine but at first it was iffy

                        maybe it has something to do with my problem



                        would it have anything to do with me using 18 gauge cable for 12v batt and ground? (its all i had)
                        Yes, 18 guage!....to the power antenna wire!
                        Attached Files
                        Laidback


                        The ultimate CarPC - Wow!

                        Comment


                        • #13
                          I would agree, 18 gauge wire is too small. I use 10 gauge, as my whole system draws about 150 watts. If you do a search for DC wire gauge charts, you will find that 14 gauge is recommended for even the smallest projects. Also keep in mind that most charts are rated for free space with good air flow. That's not the case in most carputer setups. In many cases, the wire is at +60 C before the unit is even powered up. It's better to error on the side of caution when selecting wire gauges. Use heavy wire, and a good inline fuse.

                          Another thing to remember is that Most Multimeters do some type of averaging, and the actual voltage may be dipping lower then the meter is reporting for short periods of time. The protection circuitry in your supply may be fast enough to detect a drop-out that is very short in duration while your meter may never see it.

                          Walt

                          http://www.safossils.com/carputer.html
                          http://www.safossils.com/waltsongs/
                          Walts DC DC ATX Power Supply

                          Comment


                          • #14
                            You sure it isn't the software? Mine takes about 30 seconds to hibernate if I do it right after a boot up but if it's been on for a few mins, it hibernates in like 5 seconds and shuts off...

                            Comment


                            • #15
                              Originally posted by Laidback
                              Yes, 18 guage!....to the power antenna wire!
                              i just dont know where to find the direct battery line
                              i had never worked in a car prior to this so i know only very little
                              2004 G35 Coupe project

                              Comment

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