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Thread: OMGNOOBIE ?????'s

  1. #1
    FLAC Gutter's Avatar
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    OMGNOOBIE ?????'s

    I"M A HUGE NOOBIES TO THIS COMPUTER+CAR THING!!@

    Anyway, I need a 2-pos rotary switch to power an ATX motherboard on and off (properly, not just cutting power). El Search-o function-o hasn't turned up anything but my old thread.

    Because it's an ATX motherboard, the PWRON jumpers need to be shorted momentarily in order to do this. Just using a rotary switch by itself won't work because it'll keep the circuit closed.

    Anyone have any momentary switch circuits that'll work?

    Help.

  2. #2
    FLA gospeed.racer's Avatar
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    2005 Ford Focus ST

  3. #3
    FLAC Gutter's Avatar
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    No, premade ones return to center when you turn them, kinda like the ignition in your car. I need a definite *click* when you turn the knob left or right and it needs to stay there. I drew up a schematic using some capacitors, but it didn't quite work.

  4. #4
    FLA gospeed.racer's Avatar
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    ....So when you turn it, you need a "click" and a momentary pulse, but no spring return? whoa, ok, never seen them before!
    2005 Ford Focus ST

  5. #5
    FLAC Gutter's Avatar
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    I know, that's why I need a circuit that will short the PWRON jumper on the motherboard for 1 second when I turn the switch to either position. I know the switch alone doesn't exist.

    My short-lived idea was to have two capacitors; one that would charge while the other discharges for about one second and causes a SCR rectifier to close the circuit for a second. I just couldn't come up with a working prototype.

  6. #6
    Super Moderator xBrady's Avatar
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    Quote Originally Posted by Gutter
    I"M A HUGE NOOBIES TO THIS COMPUTER+CAR THING!!@
    If you didn't notice your caps lock is on.
    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.

  7. #7
    FLAC Gutter's Avatar
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    Quote Originally Posted by brady
    If you didn't notice your caps lock is on.
    I had to make this an on-topic post somehow.

  8. #8
    Newbie
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    Why dont you use Push button instead???

  9. #9
    And then I was mod. Tidder's Avatar
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    Here ya go, you need one of these with a rotary switch.
    http://www.grainger.com/Grainger/pro...mId=1611601184

    This one is actually for AC, but I bought one for my car that's DC. This is all I could find in a 30sec search.
    Tidder

    Try RevFE
    The best resurrected frontend I've ever used, period.

  10. #10
    FLAC Gutter's Avatar
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    This isn't for a car. This is for a separate project where a rotary switch is mandatory.

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