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Power supply question

post #1 of 2
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I'm running an ITX system in my Dance Dance Revolution arcade cabinet and I would like the computer to share a power cable / control power to the rest of the cabinet. This way if the power button is pressed it shuts down the computer properly and removes power from the cabinet. Similarly if the power is applied to the computer the cabinet turns on.
For some helpful info the cabinet power input is via a standard PSU cable and power to the cabinet is provided by a latching rocker switch inside the coin door.
What would be the best way to go about this? I'm game for it working the opposite way as long as the system is forced to cleanly shut down (active game data is stored in ram so loading screens are short, still needs a slightly faster cpu gonna give it an i3..)
    
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CPUMotherboardGraphicsRAM
Core i7 920 D0 4.2ghz HT (1.3625v) Asus R3E 2xGTX 460 (non SLi, no overclock) 6x2gb G.skill @ 6-8-6-24-1T 
Hard DriveOptical DriveOSMonitor
WD-VR 300GBx1, 2xWD 1tb,2x60gb Agility Some crappy combo burner... Arch x64 3xDell U2410f rev A02 
KeyboardPowerCaseMouse
X-Armor U9BL TT Toughpower 1200w (NTB more efficient) Mountain Mods Pinnacle 24 CYO Roccat Kone (R.I.P. A4Tech x7) 
Mouse Pad
Steelpad Experience I-1 
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Reply
post #2 of 2
So you're talking about having something that's powered by the power supply, shut off the power supply, and expect it to be able to be turned back on again... or does the PSU for the computer have a separate power supply from the cabinet?

If they have separate supplies, simply put a 5v relay with switch contacts rated for 120vAC in line with the door switch. Wire the relay to a USB header that isn't powered when the system is off. When the computer shuts down, and USB is off, the relay will disconnect the cabinet power supply.
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