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  • carputer on/off power question?

    i have a question about a laptop docking station.... and various other things...


    with a laptop docking station, how do you stop the battery from charging on the laptop when the car is off?

    erm, sorry i sound like a newbie here, its cos' i pretty much am.... lol

    (the car will be running a touch screen, havent decided on the size yet, maybe a 10 incher?)

    wouldnt it entirely drain the battery from the car if it continued to charge? how would that work? and if you were running a carputer that was mounted in the car for good, how would the computer turn on and off? would you have to hook up somxe kind of relay, or a remote line, like an amplifier, and if the remote line goes dead, then the computer automatically turns off? i am very curious on how this would work....

    this would take much too long on certain older laptops.... for the system to boot fullly.... but if you run windows media center on a 1 ghz? how long would it take to load that? i mean, i would like to be up and running within a matter of a minute or less.... is this possible? i dont have any idea what wmc is capable of or how long it takes to load, but i would imagine that it takes a fraction of the time as xp or any other operating system to load....

    Thanks for the information....


    Dan 00' GTP

  • #2
    Set it to hibernate; easy and efficient.
    - ƒarrow

    www.myspace.com/farrow099

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    • #3
      how long would the computer run on hybernate(as to the battery life in the car)? and is it possible to hook a hybernate "swtich" up with the ignition switch... so that when the ignition is turned on, it comes out of hybernate.... and when its turned off it goes into hybernate?


      Thanks

      Dan

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      • #4
        You can put a computer into hibernate, unplug power for a week, plug it back in and it will resume and be right back where you left off. Hibernation requires no power because it writes the entire system state and contents of RAM to a file on the hard drive.
        Now, the laptop itself may receive some power for charging the battery or somesuch, but that's a function of the laptop itself, not hibernation.

        Within windows, you can set the functionality of the power button to initiate hibernation.
        Now, with a laptop, you need to hack the power button so that when the ignition is turned on, it will simulate pressing the power button. It's a lot easier to pull off with a docking station than it is with the laptop itself, certainly.

        You, sir, need to start doing some reading in the FAQ Emporium.
        Have you looked in the FAQ yet?
        How about the Wiki?



        Under normal circumstances, a signature would go here.

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        • #5
          If I understand it correctly then Hibernate still uses a little trickle of power, so if you were to put you notebook on hibernate it would wake back up fine because it's drawing from it's battery.....but if it's battery was dead, or if you didn't have a battery in it, OR if it was a regular computer then if you totally cut the power to it then that would mess w/ hibernation.......right?
          Nick
          '99 Ford Escort ZX2 CarPC <-- RIP Feb '07

          2006 Chevy Equinox LS (Current Project)

          **VIA EPIA PD 1ghz Mobo, OPUS 150, 7" LinITX LCD touchscreen, 512 Ram, 60Gig HD, DLink Bluetooth, Belkin 802.11g wireless,

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          • #6
            Hibernate uses no power. I left my laptop in hibernate for 2 weeks while the car was having a new motor put in and it started up no problem.

            What was said was that the laptop may draw power to charge its own battery, this is easily avoided by removing the laptops battery.
            - ƒarrow

            www.myspace.com/farrow099

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            • #7
              Also you should consider using a door lock actuator to manually push the button if you don't have wires coming off your power button. (Avail. on ebay for $10 shipped; easy to wire)
              - ƒarrow

              www.myspace.com/farrow099

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              • #8
                Originally posted by vdan02
                wouldnt it entirely drain the battery from the car if it continued to charge?
                Absolutely, if it continued to charge, but you can disconnect the laptop from the cars power source, thereby killing the power drain from the battery, and stopping the laptop battery from charging.
                Originally posted by vdan02
                how would that work?
                Huh, what do you mean.
                Originally posted by vdan02
                and if you were running a carputer that was mounted in the car for good, how would the computer turn on and off? would you have to hook up somxe kind of relay, or a remote line, like an amplifier, and if the remote line goes dead, then the computer automatically turns off? i am very curious on how this would work....
                There are some options. Read the FAQs and search. The answer is out there.
                Originally posted by vdan02
                this would take much too long on certain older laptops.... for the system to boot fullly.... but if you run windows media center on a 1 ghz? how long would it take to load that? i mean, i would like to be up and running within a matter of a minute or less.... is this possible? i dont have any idea what wmc is capable of or how long it takes to load, but i would imagine that it takes a fraction of the time as xp or any other operating system to load....
                Hibernation or standby with plain old windows XP, hibernation being slower to reboot, but needing NO power.

                Michael
                ...I love the French language...especially to curse with...Nom de Dieu de putain de bordel de merde de saloperies de connards d'enculés de ta mère. You see, it's like wiping your *** with silk, I love it.

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                • #9
                  Laptop Remote Power On Button Press Solenoid Actuator 12v Push Thrust

                  For the benefit of anyone searching ^

                  Laptop Remote Power On Button Press Solenoid Actuator 12v Push Thrust

                  I've changed my mind about using a door lock actuator as its just too damn large.

                  I'm sure all the veterans of this forum will flame me if this has been mentioned previously, but I'm posting anyway

                  I found an excellant website here in the US that carries quite a few very small thrust / push type solenoids @

                  http://www.electromechanicsonline.co...?cat=Solenoids

                  There is also a good one in the UK @

                  http://www.maplin.co.uk/Module.aspx?...ges&doy=search

                  I went with a very small 12v solenoid that is threaded and has a built in spring to pull it back to an off position when no power is applied.

                  ~ However, I would like to reiterate that the best way to make a remote power button would be to solder into the computers own switch and extend the wires. BUT as we all know that is not always possible, especially with notebooks.
                  - ƒarrow

                  www.myspace.com/farrow099

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