RE: Powering a remote wake up switch from automation PC

["Phil Harris" <phil@xxxxxxxxxxx>]

If you're looking for a 5v permanent feed then you should have one on the
power connector to the motherboard *OR* you can probably pick one up from
the WOL connector.

Phil

> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx]
> On Behalf Of Hawes,Timothy Edward (GEG)
> Sent: 06 July 2005 14:09
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Powering a remote wake up switch from
> automation PC
>
> Oh, OK  - just a thought.
>
> Some (all?) of the Dell machines I've worked with recently
> have 1 or 2 LEDs inside the case on the mobo which are lit
> even when the machine is off. They must be powered through
> the PCs PSU so some careful poking around on the mobo power
> connector may find a voltage useful to you.
>
> Alternatively, can you use your 6v USB supply with a separate
> voltage regulator to get you a 5v supply? I don't have much
> experience of spec'ing these regulators but one of the other
> electronics gurus on the list should be able to point you in
> the right direction. How much current does your PIC circuit need?
>
> HTH,
>
> Tim.
>
> > -----Original Message-----
> > From: Simon Ryley
> >
> > Hi Tim,
> >
> > Unfortunately I can't do that.  The PC will not respond to
> WOL packets
> > in S3 shutdown, and my Netgear router won't allow broadcast
> packets to
> > be sent through it, so I can't even get a WOL packet onto
> my internal
> > network from the internet.
> >
> > Cheers,
> >
> > simon
> >
> >
> > Hawes,Timothy Edward (GEG) wrote:
> >
> > > Simon,
> > >
> > > Could you send the automation PC a 'magic' wake-on-LAN
> > packet instead
> > > of starting it via the power button?
> > >
> > > HTH,
> > >
> > > Tim.
> > >
> > > > -----Original Message-----
> > > > From: Simon Ryley
> > > >
> > > > I'm fitting an embedded micro with a webserver to my
> > automation pc
> > > > to allow me to wake up the automation pc remotely from
standby.
> > > >
> > > > For power saving reasons, the pc is normally in S3
standby, and
> > > > wakes up through scheduled tasks when things need to be
done.
> > > >
> > > > I'd like to be able to wake it up remotely over the web
> > when I want
> > > > to do maintenance on it, so I'm fitting a micro
> connected to the
> > > > power switch to bring the machine out of standby.
> > > >
> > > > The micro needs a regulated 5v or a unreg 12v supply to
run.
> > > > As an elegant solution, as it is fitted inside the pc
> > chassis, I'd
> > > > like to power it from the PC ATX power supply.
> > > > Problem is when the machine is in Standby, all the
fans,
> > drives etc
> > > > are turned off.
> > > >
> > > > Does anyone know a source of permanent 12v or 5v from
the
> > PC power
> > > > supply that I can use to power the micro?  I've
measured
> > the standby
> > > > 5v on the USB port, and it seems to be more like 6v so
isn't
> > > > suitable.
> > > >
> > > > Thanks,
> > > >
> > > > Simon
>
>
>
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