Nigel Orrs IR and Ians PC circuit

[Robert Chasmer <robert.chasmer@xxxxxxx>]

Way back in Dec 2002 Stuart Whyte [mailto:lists@xxxxxxx] wrote:
> Saturday morning saw the arrival of a jiffy bag containing a custom
> made circuit board from Ian Bird that allows me to connect my PC
> serial port to the IR signal bus of the Nigel Orr designed IR
> extender, that is already running through the flat.
> After a trip to Maplins, who (amazing as it may seem) had all=20
> the parts in stock to construct an IR Receiver circuit
> http://www.lirc.org/images/schematics.gif
to teach the PC my remote
> commands.

Stuart/Ian, I have Nigel's circuit running through the house as well.  With
the arrival of a new PC at the beginning of the year I'm now ready to
connect it to the IR bus and finally have a play with Dans IR software.

I see the circuit connected to your PC has a TSOP which is for receiving
IR=
.
To inject IR on the bus for Nigel's sender circuit do you just connect this
receiver in parallel with other TSOPs?.

The TSOPs I've used with Nigel's circuit are 1838's that I got from Keith,
rather than 1738's which I think have a slightly different pinout.  I've
found a very similar circuit to the one on lirc but that uses the 1838's,
with a good tutorial:-
* http://www.meblin.karoo.net/infrared.htm
* http://www.heatseekerz.net/index.php?page=3Darticles&id=3D4&pagenum=3D3
=
=20

I think the idea is that this powers itself via the serial port, as there
i=
s
no mention of a separate powersupply.  So my question is to I only need to
connect the OUT (Pin 3), and GND (Pin 2) to my other circuits to do the
trick?

I've guessed at some maplin codes, I'm not sure if I got the right
components:-
Maplin		Part			Description
VH06G/AT02C/DT55K	10=B5F, 16V (elco)	Capacitor=09=09
SC93B/YR75S/RA49D	100nF / 0.1=B5F	Capacitor
D4K7			Res 4.7K		Resistor
QL80B			1N4148		Signal Diode
QL26D			LM78L05ACZ		0.1A Fixed Regulator=20

Do this look about right?

Thanks


Rob
--=20
______   __   _   ______   ______=20
/ ___   / /  /  / __    / _____ HOME: rob@xxxxxxx
/ /  /_/ / /__/ / / /__/ / / /__    http://www.kaosuk.co.uk/
/ /  __  / ___  / / ___  /  \__  \            ----          =
=20
/ /__/ / / /  / / / /  / / _____/ / Rob Chasmer, MMT Computing
______/ _/  /_/ _/  /_/ ______/ robert.chasmer@xxxxxxx
=20
This email and any files transmitted with it are confidential and intended
solely for the use of the individual or entity to whom they are addressed.
If you have received this email in error please let us know by e-mail reply
and delete it from your system; you may not copy this message or disclose
its contents to anyone.  Please note that any views or opinions presented
i=
n
this email are solely those of the author and do not necessarily represent
those of MMT Computing plc.  Finally, the recipient should check this email
and any attachments for the presence of viruses.  MMT Computing plc accepts
no liability for any damage caused by any virus transmitted by this email.=
=20