[MLB-WIRELESS] Electrical guinesses step forward !

Tony Langdon tlangdon at atctraining.com.au
Wed Jun 12 10:36:17 EST 2002


> > To make a power switch controlled by a PC, and to then make 
> an Infrared
> > input for the switch. - so i can use a remote to turn on 
> and off, say ...
> > the kettle (cant think of much better things, than watchin 
> TV and starting
> > the kettle with out getting up ;)

Shouldn't be too hard...  The Coffee HowTo has some sketchy ideas.  For on
off applications, one can use one bit the printer port to drive an opto
isolator/triac or relay combination (don't forget the isolation!!!!!!).  If
you want non simultaneous control of up to 256 devices, you could decode the
8 pins of the printer port.  An alternative approach is a serial controlled
PIC based system, which could operate completely standalone if you wanted
to.  As an aside, I could do such control over a wider range with the IRLP
box...  "Press hash to boil the kettle..." :-)

> >
> > If it could also repeat the Infrared signal as well ? (eg. 
> sender) it
> could
> > turn on the Stereo in another room ;-)

This one is better handled outside the PC.  There have been kits for "infra
red repeaters" over the years.

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