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

  1. #191
    FLAC W3bMa5t3r's Avatar
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    Quote Originally Posted by silicoon View Post
    hey i checked and the relay does tick over when i add power, but it still resets on startup etc...
    Giving power to the module, or plugging the usb into a powered port? When giving power to the module, you'll hear the 12vdc relay click. To test just the usb relay, you don't have to power up the module, just plug the usb cable into a powered port. You should then hear the 5vdc relay click.

  2. #192
    Newbie silicoon's Avatar
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    yeah the 5v relay clicks, i rewired it but i still have the ability to connect and disconnect it, and it does switch... :S guess ill have to pull it up out of my seat

  3. #193
    The Vauxhall Vectra Project ccsnet's Avatar
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    W3bMa5t3r - I was curious about this project in your sig in your link so I thought I'd check it out.

    Have you thought that this same unit can be used with screens too where there is no auto on ?

    ( Thats why I started looking at it )

    Terran

  4. #194
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    Quote Originally Posted by ccsnet View Post
    W3bMa5t3r - I was curious about this project in your sig in your link so I thought I'd check it out.

    Have you thought that this same unit can be used with screens too where there is no auto on ?

    ( Thats why I started looking at it )

    Terran
    It should turn on any electronic device that uses a momentary pushbutton switch to power it on. So yes, monitors, external hard drives, etc. It's about a 3/8 - 1/2 second "PRESS" (or short really since that's what a switch does).


  5. #195
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    Quote Originally Posted by slinkytoy View Post
    I have a dell inspiron 8200 notbook that i have that I'm going to install into my truck. The power turn is on a board that plugs into the motherboard will this turn on unit work with this kind of connection. Any help would be great.
    Thanks
    I have the same lappy going into my van. That daughter card's power-on contacts are shorted by the underside of the power button.

    If you pull that card out you can see the same contacts on the reverse by pulling off the insulating tape underneath. There is no clearance there, so I'm going to try doing it with just a few strands of wire.

    Have you or anyone been able to do it differently?

    I wonder if the main board has a separate 'emergency' power button... I haven't been able to find anything about that...

  6. #196
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    Quote Originally Posted by brad1011a View Post
    I have the same lappy going into my van. That daughter card's power-on contacts are shorted by the underside of the power button.

    If you pull that card out you can see the same contacts on the reverse by pulling off the insulating tape underneath. There is no clearance there, so I'm going to try doing it with just a few strands of wire.

    Have you or anyone been able to do it differently?

    I wonder if the main board has a separate 'emergency' power button... I haven't been able to find anything about that...

    Check out post #153 or so. If that's what you're referring to, I think he ended up soldering the switch to his mobo at the point shown after determining which were the correct points, just like you would for the power switch. Might be good to contact him about this... and maybe post pics/results of it here.

  7. #197
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    Thanks. The daughter card also has the LED's on it, and the connector (and its interface) would be difficult to solder to.

    I think I'm going to just use the pad, and solder lightly using tinned wires. Because of the low clearance I'll try to use four (or so) open strands, insulated by flat tape.

    I'll report back with pics.

  8. #198
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    OK here's how I did my Dell Inspiron 8200 laptop. This should work with similar models that use a daughter board with contact 'pads' meant to be shorted by the conductor disc on the underside of the flexible power button.

    On this Dell all that is needed to access the daughter board is to remove the hinge cover, which requires no screws.

    This is the daughter card with the hinge cover removed showing the circular contacts that need to be shorted:



    This is where I mounted the connector to the hinge cover. There's a slight clearance issue, but only when the screen is completely opened flat, but it still opens that far easily. Otherwise it opens very wide even with the plug inserted:



    From the top:



    Top of daughter board showing contacts:



    Bottom where I need to solder. The small holes allow the wire to be 'hooked' into:



    One wire (perfect size!) hooked in ready to solder:



    Half way there. Flat tape is used to insulate because of clearance:



    Front of board. Notice small amount of solder coming through hole at left (too much and the button may not work!):



    Card back in:




    Ready to go, and tested:


  9. #199
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    Oh and thanks for an awesome product!

  10. #200
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    Quote Originally Posted by brad1011a View Post
    Oh and thanks for an awesome product!
    Looks dang good and you're welcome.

    Cheers

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