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Putting a toggle switch and a momentary switch in a series for power-up? - Page 3

post #21 of 32
Thread Starter 
So, does that boil down to the LED being directly plugged into the power LED header, the momentary and the rocker in a circuit by themselves, and a single HDD activity LED header being plugged into the toggle switch LED terminal?

What I'm trying to do is get the another 5mm LED, toggle switch and momentary switch into a circuity that lets the LED turn on when the toggle switch is flicked on even when the computer isn't, then have the momentary switch turn on the computer. As for the LED in the momentary I can just wire it to a molex connector. I'm not trying to use the LED in the toggle switch itself at all anymore, and as far as the HDD activity headers go I'm just going to hook those directly to a reset switch's LED.
Edited by Supacasey - 1/17/11 at 6:50pm
    
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post #22 of 32
ok. on the motherboard header there is 3 sets of two pins. 2 pins for power led, 2 for hdd led, and 2 for power switch. hear is how you need to wire it to work how you want it.. i do not know how anyone over looked the fact hdd and power led are on different pins.
wire.png

EDIT: with this set up the rocker on/off with blink with the hdd and the intermittent will turn on with the power.

to turn on the power, rocker in on position, and push intermittent.
Edited by The Fryer - 1/17/11 at 6:33pm
post #23 of 32
Thread Starter 
That's now what we're trying to throw together, though it is good to know that's how you wire the LED in the toggle switch.
Quote:
Originally Posted by Supacasey;12048215 
What I'm trying to do is get the another 5mm LED, toggle switch and momentary switch into a circuity that lets the LED turn on when the toggle switch is flicked on even when the computer isn't, then have the momentary switch turn on the computer. As for the LED in the momentary I can just wire it to a molex connector. I'm not trying to use the LED in the toggle switch itself at all anymore, and as far as the HDD activity headers go I'm just going to hook those directly to a reset switch's LED.
    
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post #24 of 32
Quote:
Originally Posted by Supacasey;12048215 
What I'm trying to do is get the another 5mm LED, toggle switch and momentary switch into a circuity that lets the LED turn on when the toggle switch is flicked on even when the computer isn't,


then have the momentary switch turn on the computer. As for the LED in the momentary I can just wire it to a molex connector. I'm not trying to use the LED in the toggle switch itself at all anymore, and as far as the HDD activity headers go I'm just going to hook those directly to a reset switch's LED.

ok the first part is not possible. your power supply can not put out power to the led unless it is on, it is not on unless the pc is on, and you can not use an external power source unless you have it on its own independent circuit.
post #25 of 32
Thread Starter 
Quote:
Originally Posted by The Fryer;12049917 
ok the first part is not possible. your power supply can not put out power to the led unless it is on, it is not on unless the pc is on, and you can not use an external power source unless you have it on its own independent circuit.

But what about using the PSU's 5v standby power, as recommended by ShamrockMan?
Quote:
Originally Posted by ShamrockMan 
5v Standby power should be a Purple wire going to Pin 9 on the mobo power cable (see http://pinouts.ru/Power/atxpower_pinout.shtml).

Connect switch to the - side of the power on post, connect 1 side of pushbutton to other side. Connect the button and switch together, then have the gnd side of the led connect to the connection between the switch. Use a 100ohm resistor to connect the + side of the led to the 5vStandby power

Provided that's correct, and it sounds like it is, all I'd need to look up now is how to best tap into that power wire.
    
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post #26 of 32
without knowing the wattage or amperage of the 5v standby i would suggest it really. there is no fan or anything going and it could overheat part of the psu.
post #27 of 32
Thread Starter 
Quote:
Originally Posted by The Fryer;12050363 
without knowing the wattage or amperage of the 5v standby i would suggest it really. there is no fan or anything going and it could overheat part of the psu.
Quote:
+5 VDC Standby Voltage (max 10mA) 500mA or more typical

And there's already a fair bit of LED's on my R3E no doubt powered by the standby power when my computer's off, so I think it can handle one more 5mm red LED.
    
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post #28 of 32
We bought one of those and put in a computer at school. It is not necessary to use a momentary switch with it. We just put ours in straight and you flip it and flick the cover down and the computer powers up.
post #29 of 32
A typical +5VSB rail in a modern PSU can output 3A. Keep in mind, your +5VSB powers your keyboard, mouse, other USB devices, mobo LED, charges the CMOS battery, and powers the CMOS circuitry, with ease on just about 0.5-1.5A. One little LED isn't going to be a problem.
post #30 of 32
I think allikat had the best idea, using a relay in the USB/Stanby circuit as a switch in the power switch circuit will give exactly what you wanted without the two being connected.

relayd.jpg Uploaded with ImageShack.us
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