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AOpenPC - Find 12V Rails?

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  • AOpenPC - Find 12V Rails?

    I purchased a MP945D which uses a 945GM motherboard. I recently realized I am going to need one 12V rail and quite possibly two. Unfortunatly I took my case apart and I can't find a single rail in there at all.

    Anyone have any suggestions for me?

    *Not sure if this is the appropriate forum, please move if nessesary*

  • #2
    I don't think there's is a 12v rail you can tap into on that pc.

    How do you plan to power the pc? If you decide to go with a carnetix psu that you can get the 12v from carnetix secondary output.

    Comment


    • #3
      I am going with a Carnetix PSU unfortunatly that 12V is already spoken for. I need to power my LCD, my XM satellite and one more to power a circuit board I am installing.

      Is there another way I can power these other devices?

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      • #4
        Update with some pics. The only connector I can even see available is the one circled in green. I have no idea what this is, can anyone identify? Feel free to point out anything else that might be useful power wise:


        Comment


        • #5
          That's not a power connection. If there were a mini-PCI card in there I would say it was for a wireless antenna (bluetooth or wifi). But no card, so I dunno, but it is not power.

          Also your screen should have come with an egg. That is a 12v regulator.

          Depending on how much power you need, you may be able to just buy a spare egg from Armen at digitalww and use that.

          For XM I doubt it draws that much power. So an egg might work for it. I cannot speak for the circuit board because I dont know what it is... but since the screen is meant to be powered from an egg, use the egg on the screen and the carnetix output for the board
          Fusion Brain Version 6 Released!
          1.9in x 2.9in -- 47mm x 73mm
          30 Digital Outputs -- Directly drive a relay
          15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
          Buy now in the MP3Car.com Store

          Comment


          • #6
            Pat:

            I replied to your PM before seeing this thread...
            As such, I hadn't seen the photos. It appears that there may not be a standard-issue HDD conenctor from which you could draw 12v. sorry about that.

            I like ToasterBoy's idea. Get a spare regulator egg for the Lilliput and use the Carnetix 12v for the XM. I also think that you can probably use both the screen and the XM from teh Carnetix 12v, but I'd double-check the power requirement for the XM unit before attempting that.

            Either way, you've got some options.
            Have you looked in the FAQ yet?
            How about the Wiki?



            Under normal circumstances, a signature would go here.

            Comment


            • #7
              Originally posted by 2k1Toaster View Post
              That's not a power connection. If there were a mini-PCI card in there I would say it was for a wireless antenna (bluetooth or wifi). But no card, so I dunno, but it is not power.
              That is a wireless card, it is a mini-PCI. You can see where it's attached to the antenna going out the back of the computer.

              But correct, not a power cord. It's just the external antenna cord.

              Comment


              • #8
                Originally posted by Phatsacks View Post
                That is a wireless card, it is a mini-PCI. You can see where it's attached to the antenna going out the back of the computer.

                But correct, not a power cord. It's just the external antenna cord.
                yes the port is mini-PCI but there is no card in the slot. So that is why I wondered.
                Fusion Brain Version 6 Released!
                1.9in x 2.9in -- 47mm x 73mm
                30 Digital Outputs -- Directly drive a relay
                15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
                Buy now in the MP3Car.com Store

                Comment


                • #9
                  Actually I was wrong.

                  The cord he indicated in the first picture, is different from the external antenna cord.


                  The reason you don't see the card is that it's attached to the HD and CD which are fastented to the top of the case. When you close the case, it gets pushed in the slot.

                  I'd have to open up my case to see what the cable actually is.

                  Comment


                  • #10
                    Thanks guys. I'll look into a regulator. The XM unit is the mp3car one:
                    http://store.mp3car.com/Mp3Car_USB_a..._p/sat-007.htm

                    The circuit I need to power is to control open/tilt functions for my screen housing.

                    Comment


                    • #11
                      Hmm so as it turns out I have no idea what a regulator egg is. Anyone mind filling me in?

                      Comment


                      • #12
                        I haven't bought a screen yet, as I'm trying to get the computer aspect going first and am selling my first setup and going with a complete custom box.

                        I believe it is the egg shapped unit in the picture in the top right that is connected to the cig lighter.

                        Comment


                        • #13
                          Originally posted by PatInTheHat View Post
                          Thanks guys. I'll look into a regulator. The XM unit is the mp3car one:
                          http://store.mp3car.com/Mp3Car_USB_a..._p/sat-007.htm

                          The circuit I need to power is to control open/tilt functions for my screen housing.
                          That XM unit does not require regulated power. Wire it to an ignition-controlled power line, and you're good to go, my friend.
                          Have you looked in the FAQ yet?
                          How about the Wiki?



                          Under normal circumstances, a signature would go here.

                          Comment


                          • #14
                            Ok thanks guys! I will wire the XM to a power line and possibly look for a egg for the circuit board.

                            Can anyone point me in the direction of a newb guide to wiring? I've never done anything like this before and just wondering what sort of connectors/wires etc im going to need to purchase before getting in there.

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