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Thread: Need assistance regarding the carputer on/off switch

  1. #11
    What can I say? I like serial. Curiosity's Avatar
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    Right. That's just going to replace the external supply - The inverter you have in the ligher socket and the AC adapter which converts the AC back to 12VDC (or whats printed on that little box). It can be plugged into the same jack on the PC. Or in the case of the MiniBox DC-DC PSU it has a 4 pin molex which looks like what's on the back corner of Mini-ITX mainboard.

  2. #12
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    OK thank you very much for the replies my last concern is this : i saw the website and saw the downloadable content they had but there wasn't actually a way how to install it :s can anyone link me to somewhere i can read about it ? Thanks again ! very helpful forum !!

    Regards,
    newuser356

  3. #13
    What can I say? I like serial. Curiosity's Avatar
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    http://store.mp3car.com/Intelligent_..._p/pwr-034.htm

    http://www.mini-box.com/DCDC-USB;jse...4Pa38Ta38Lc3r0

    Last one has the manual. The software just runs I think.

    Wire one side to the car, the other to the PC. PSW goes to the power button.

  4. #14
    MySQL Error soundman98's Avatar
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    to be a little more specific, wire the new power supply directly to the battery, and include a fuse-- this is the absolute best way to power any accessory in any car.

  5. #15
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    Before I go ahead and buy / mod the small factor system I wanted to point out that I wont have the carpc 24/7 in my car that is why I had though of a switch/cigar adapter as its only gonna be used for specific apps not as a media car centre is it still worth the engine ignition ? or will a switch do ? what would you suggest pls

    Thanks again,
    Newuser356

  6. #16
    What can I say? I like serial. Curiosity's Avatar
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    Oh in that case you have a lot of options. I'd still wire up the power button either way. Just put a plug on the back of the PC so you can disconnect it. You could run that to a pushbutton in the front if you want to use the adapter that you have now. Doing it all with the MiniBox would cut down on the hassle and speaker hum and such. Either way you'll be plugging in the power, button, video, audio, USB all the time but at least you won't have to carry the adapter too. Once you get tired of dealing with that, buy a second one.

  7. #17
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    i had another project in mind when i get some more money hehe ,but i wanted the next mini itx system to be a bit hardcore (for in car and with home mains usage) ... is there anyway i could find:

    a) a really small 1000w psu coz the ones i have seen are all full atx size (maybe run sli and a top
    notch cpu)

    b) and would it be safe to run in a car ?

    another thing pls when u say plug are there any specific types ? (again am fairly new to car installation, i have see the thread about wire gauges though)

    Thanks again

  8. #18
    What can I say? I like serial. Curiosity's Avatar
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    Well, a car PC has a lot to do with compromising power for needed functionality. Just the small PC you have now for example is going to drain the battery in a few hours to the point where you can't start the car, and probably 1-2 days when it's off (using the AC adapter and inverter) so 1000w (around 80A) is going to need heavy gauge wire and will reboot when you crank on a full battery and probably kill the battery in under 30 minutes.

    That being said, see if you have enough CPU to do what you want with what you have.

    A plug/wire for the power button can be very small, like 28 AWG. It's like 5mA. Any momentary push button will work as well. For a connector, anything will do. 2 conductor. I don't like headphone jacks, or anything that's the same as another one in the same area just for safety. Actually I use a BEC-JST for that from a hobby shop.

  9. #19
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    but if i remove the cigar lighter adapter when i go out of the car it wown't drain the batt right ? :S or am i missing something ?
    also i was planning to use the car pc while the engine is running will that too drain the batt to a critical point ?

  10. #20
    What can I say? I like serial. Curiosity's Avatar
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    That's true. As long as you don't forget to unplug it. But also remember, you have to wait for it to shut down every time before unpluging it.

    It won't drain the battery while the engine is running.

    Oh but the other one, 1000w might be close to what your alternator puts out, so you have to take that into consideration also. Add some amplifiers and such and you might stall at every stop light, or worse...

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