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Thread: Laptop Auto Power-On / Turn-On Module

  1. #301
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    Jan 2009
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    what about a momentary pulse to power-off?

    can this be modded so that when the key goes off; it outputs another momentary pulse to initiate shutdown off a device?

  2. #302
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    Jan 2009
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    figured it out - working great..i used info from this site
    http://www.simprojects.nl/toggle_to_momentary.htm
    ignore the "keyboard part" but i'm using an SPDT relay that goes on and off with my ignition key and once it returns "un-powered state" the the output goes negative and give me another "pulse" to initiate shutdown as if pressing the power button again.



    should integrate this into your boards for those of us wanting a shutdown w/ keyoff


    actually, i'm not using this for a computer or a car for that matter; but rather using a programmable thermostat in my home to turn on and off my "window air conditioner unit" which has a momentary push-button on and off, so i can use the temperature sensing and timer unit of my programmable thermostat to control my air conditioner..

  3. #303
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    Nov 2007
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    I haven't read the whole thread, but this was recently linked to on DC and was wondering if someone can please tell me if the circuit diagram on the first page is the most recent? If so you want to put a flyback diode on the USB powered relay so you don't damage the computer and/or power supply....

  4. #304
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    Nov 2008
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    Hollywood, Florida, United States
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    turn on module

    Hey I am building the module with the parts needed and it didn't work right. Could you post how a more diescriptive wiring diagram. More in detail with the SPDT RELAY? I used the diagram on the packaging to compare to the one you posted and it doesn't work right. So, just wanted to see if you could draw out the 5 legs and which lines they should run to. Thank you.

  5. #305
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    Mar 2009
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    I have been reading up on this site for a while now, and I want to start my own CarPC Project basically, I got a second hand D600 off ebay (easy to solder to the power on). I really would like to order one of these modules, I think W3bMa5t3r's website is currently under development/reconstruction and W3bMa5t3r's last activitiy was on the 8th of March.

    If anyone could provide any assistance on what to do, or if W3bMa5t3r, you read this, could you send me a PM, I'd be greateful, Thank you!

    I understand that you may be busy too, I have read the notice on your site W3bMa5t3r.

    Much appreciated in advance.
    Gurminder.

  6. #306
    Constant Bitrate Gibson99's Avatar
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    Aug 2004
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    Houston, TX, USA
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    i think if you can solder the 2 points on a laptop power button, you can solder the rest of this project together. it's really not that hard. for me, the hardest part was soldering the 2 points in my laptop! everything else i soldered was much bigger and chunkier so it was easier than soldering those tiny points on the laptop. totally worth the work imho.
    Previous: CamryAmp 1.0 - 95 Camry SE V6 Coupe (sold)
    Current: CamryAmp 2.0 - 98 Camry CE V6 5spd (still bench-testing)

  7. #307
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    Mar 2009
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    From my local maplins (or even online for that matter), I can't find the specific relays which I need to create the circuit.

    Any help would be much appreciated.

    Gurminder.

  8. #308
    Newbie speakers_86's Avatar
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    Mar 2007
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    I may be able to get my hands on a free laptop, so this is looking very interesting to me right now.

    I read here that standby cant be used, because the unit will not send a turn on signal because the usb cable still receives power while the computer is in standby. If someone uses standby, would a press of the emergency switch initiate start-up?
    2007 Mazda 6

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  9. #309
    Variable Bitrate
    Join Date
    Nov 2007
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    262
    Here's the terms as I understand them:

    Sleep = stop the CPU and disk, but keep everything in RAM; draw just enough power to keep the RAM intact
    Hibernate = stop the CPU and disk after flushing everything to disk; draw no power at all.

    What's the difference between "standby" (your term) and "sleep" (as defined above) ? If they are the same thing, then you're in luck. My laptop turns off power to the USB ports when asleep, I suspect yours will too. That allows the power-on module to wake the computer from sleep when I turn the key.

  10. #310
    Newbie speakers_86's Avatar
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    Mar 2007
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    Great. Thanks for that explanation. Now I also know that I understood what I read in this thread! Ill keep my fingers crossed that the laptop I am hoping to get kills the power to the usb ports on sleep.

    (Yes, I said standby, I meant sleep.)
    2007 Mazda 6

    Planning..............[10%]
    Purchasing Parts...[0%]
    Install.................[0%]
    Bugs...................[0%]
    Incomplete

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