| Software Support > Automated Projects |
| Hooking up a button to turn on my motherboard. |
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| DaOld Man:
*Warning* Whenever you do any work like this on a motherboard, make sure all power has been turned off for a few minutes. Also be aware that static electricity is a silent killer of these boards, so always observe static precautions. Touch something that is grounded before touching the board. Also remember that even though the power is unplugged, there is still that little CMOS watch battery that has 3 volts on the circuit, so be careful not to lay the board on any metal things, unless that battery has been removed for a few minutes. Read up on static preventions while working on electronics. I like to place the motherboard (if it is not in the PC case) on my electric cooking stove, which is cool. Then I touch the stove before touching the board or any parts. I always unplug it from the power supply and remove the CMOS battery first. AND ALWAYS BE SAFE!! Better safe :angel: than sorry :timebomb: I am thinking about starting this post to explain ways to hook up external buttons to a mother board to turn it on. I know this subject is brought up several times on here and I thought it would be nice to have the info in one place so it wont be scattered all over the forum like it is now. First a little crappy diagram of how to hook a happ type pushbutton to the motherboard. Now where I need everyone's help is here. I would like to post a picture of a motherboard, its type and number, then a close up of the connection terminals on the board and the pic marked as to show what two pins the wires from the switch connect to. If you have a picture like this, or can get one off the web, please post it here. If there is enough interest I can make this a sticky, if not I can delete it. First, my crappy diagram of how the pushbutton will wire up: (This may not apply to all motherboards but will work for most.) |
| PL1:
Sounds like a good idea. Maybe we can consolidate the info and related links here in the wiki. Scott |
| DaOld Man:
Please note that dell may use different motherboards and just because you have a 4550 don't necessarily mean you have the version of the motherboard posted here. That being said, first pic is the motherboard for ID purposes. 2nd pic is a close up of the FP (Front Panel) connector. Third pic is a connector I salvaged from and old PC case. It used to supply an led on the front of the case. I cut off the led and attach the two wires to my new pushbutton. These connectors seem to work good for this purpose. On this motherboard, power switch connections are pins 18 and 20. The 34 pins in this connector have two rows, row next to back of the board are odd numbers, other row is even numbers. About this certain board: A ribbon cable originally plugged into this connector. The ribbon cable ran to a small board on the front with usb and audio ports. The power on switch has another smaller ribbon cable that plugs into this small usb board. This makes the job more confusing and even more difficult to tie your new button to the PC case button, so it will probably be easier to connect directly to the MB FP connector. |
| DaOld Man:
--- Quote from: PL1 on December 09, 2014, 04:14:29 pm ---Sounds like a good idea. Maybe we can consolidate the info and related links here in the wiki. Scott --- End quote --- I like that idea. |
| JDFan:
Here's a general one using a Gigabyte MOBO manual. |
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