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Starting the cabinet all at once. It works! And here's how...
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SoundDoc:
I'm actually working on a website for it right now... ;D

Its working great, sitting on the table in front of me. It isn't turning the computer on and off, but the relays closing and opening like its supposed to, I also added a supervisory led to show when its active, and a small pot to adjust the pulse length. Gimmie a min and I'll have the pic posted.
I just looked through my "junk" and I've got maybe 8 or 10 power supplies with the switched output plug. Their all bad though, and for parts.  :(

sounds like your looking at plugging the rest of the cab into the power supply to switch it. In that case it couldn't get out of sync.

You could also use a scr, or small 12V relay powered off a HD connector to switch the cab as well.

SD
SoundDoc:
heres a quick pic.
lets see, top left - simulated poles of the 120vac switched relay, bottom left 5A reed relay for power switch, and lit supervisiory led, right - adjustable pulse, .01 sec to 1 second. forget the top right, just other parts.

Have to go put another coat of paint on the cab, I'll throw together a version after that has seperately adjustable on and off pulse lengths.

sd
SoundDoc:
Still havent gotten the cab painted.... ;D

Here we go:
- individually adjustable on and off pulse lengths, 0-10 seconds.
- selectable recycle incase the computer gets out of sync.
- supervisory led to see if the things actually working.

I should have a webpage for it later tonight, or tomorrow morning with schematics and parts info. I'll post it when its up. If anyone really wants one pre-built, let me know and I'll see what it would cost to do.

sd
SoundDoc:
Still haven't gotten that coat of paint on the cab.....
Maybe tomorrow night..... ;D

*edit*
as for the pci card..... ummm... no, I'm not going to go there. It would be nice to build it that way, but this is just a quick circuit I threw together, and don't want to get into trying to extend it that way. I think its best to keep it as a completly isolated device to the system. You could always build it onto a board that takes up a rear slot location, but the signals can't easily be fed into the MB that way. (plus the support nightmare that would result would kill me... ;D)
/*edit*

I've thrown the designs I did up on my cabs page:
http://daCab.DatPlace.com

the link straight to the circuits is:
http://dacab.datplace.com/Design.htm
(about half way down)

*edit*
play with it at your own risk, I take no resposibility if you kill yourself... ;))
/*edit*

I've tested them both now, both on pc's, and they work great.  :) no problems after around 20 cycles with it getting out of sync. (asus p4c800-e-dx MB). System hibernated on power off, resumed on power on each time.

If you use them on your cab, please throw up a credit on your website for me, and enjoy!

If your not that tech. savy, I can supply them on a limited basis.  Contact me if your interested: DaCab@datplaceREMOVEME.com

sd
krick:
You ARE the man.  When I get a chance, I'll swing by Radio $hack and pick up some parts and give it a go.


--- Quote from: SoundDoc on June 17, 2004, 02:32:21 am ---as for the pci card..... ummm... no, I'm not going to go there. It would be nice to build it that way, but this is just a quick circuit I threw together, and don't want to get into trying to extend it that way. I think its best to keep it as a completly isolated device to the system. You could always build it onto a board that takes up a rear slot location, but the signals can't easily be fed into the MB that way. (plus the support nightmare that would result would kill me... ;D)

--- End quote ---

I was never suggesting using the PCI signaling.  I was just saying that it could hang off a bracket and just plug into part of the PCI slot for vertical stability but with NO electrical connections.  I've seen some OEM USB brackets designed that way.


--- Quote from: SoundDoc on June 17, 2004, 02:32:21 am ---I've tested them both now, both on pc's, and they work great.  :) no problems after around 20 cycles with it getting out of sync. (asus p4c800-e-dx MB). System hibernated on power off, resumed on power on each time.

--- End quote ---

I was just thinking about the potential "out of sync problem".  Couldn't the device monitor one of the 5V leads off the power supply (not the 5V standby).  If there is 120V power but not 5V power, it could trigger the switch to turn the computer on, and if there is 5V but not 120V, trigger the switch to turn the computer off.  I'm just throwing stuff out there and seeing what sticks.  I have no idea if this is even possible.



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