wrong post site
"crazy frog" <dingding@xxxxxxxxxxxxxx> wrote in message
> ive had the same prob needing a 30second to 60
> for a automation project, so built my own.
> ajustable from 0-60sec to delay switch on
> wile the pc boots so my relays dont flicker.
> no 555 timer in this circuit.
> just a large cap to do the timeing.
> i could send a circuit to youre
> email if you want it.
> "Andrew Merton" <nobody@xxxxxxxxxxx> wrote in message
> > I need to constantly transfer files between two networks (corporate &
> > analysis) that *cannot* be connected directly. Currently, we copy files
> > to a USB flash drive on a machine on one network, then move the flash
> > drive onto a machine on the other. Very tedious, especially as we do
> > this at least once/hour or thereabouts...
> > Is there any reason I shouldn't build a 4PDT switch in a box - plug the
> > flash drive into the box connected to the centre of the switch, wire USB
> > plugs to the two outsides (poles), and stick one plug into the laptop
> > and one into the corporate m/c?
> > Only one side is ever connected at a time, so there shouldn't be any
> > problems with connecting two +V together, and since the cables would be
> > short (<2m, .5 meter each side) the lack of termination shouldn't be a
> > problem, should it?
> > I can build this for around NZ$20 (US$30-40, I think) (I can't believe
> > a 4PDT switch is so expensive!), so it seems to be cheaper than buying a
> > commercial one. Note that we can't use a hub since that would
> > effectively connect the two networks together, which is a big no-no...