[MLB-WIRELESS] Electrical guinesses step forward !

[David Ng]

Building a IR reciever for your computer isnt to hard to do.
I've built one using parts sourced from a local Dick Smith.

Part listings and prices are below:
R1090 Resistor 4k7 $0.04
Z1955 Sensor IR buffered Rcvr w/ Lens $6.50
Z6108 LM 78L05CZ +5V 100mA V/Reg $1.00
Z3120 Diode 1N4148 Small Signal $0.06
P2686 9-Pin Sub-D Plasitc Backshell $2.20
P2685 9-Pin Sub-D Solder Tail Socket $1.35
R4295 Cap Electro RB 1.0 uF 50WV $0.20

Follow the schematic shown here:
http://www.lirc.org/receivers.html
http://www.lirc.org/images/schematics.gif

...and the assembly instructions here (but by using the above components and
schematic):
http://www.heatseekerz.net/index.php?page=articles&articleid=4&page_number=1

And you should be right!
Its handy because the entire IR reciever fits snugly into a 9-pin serial
port connector!

For windows, you'll need the two following programs to drive the IR reciever
and to control windows:
http://winlirc.sourceforge.net/ (WinLIRC)
http://www.girder.nl/ (Girder)

For linux, you can just use:
http://www.lirc.org/ (LIRC)


I should also mention that I have heard that it is possible to build an IR
reciever by using the Line-In input on your soundcard.
Instructions are here:
http://forums.overclockers.com.au/showthread.php?s=&threadid=60426
I havent tried it myself, but looks rather simple!


Hope this helps,
nudge.

----- Original Message -----
From: "Tony Langdon" <tlangdon at atctraining.com.au>
To: "'Brian Slater'" <b_slater at hotmail.com>; <melbwireless at wireless.org.au>
Sent: Wednesday, June 12, 2002 10:36 AM
Subject: RE: [MLB-WIRELESS] Electrical guinesses step forward !


> > > 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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