RE: IR with Comfort

["Ian B" <ian.bird@xxxxxxx>]

This is a bit of a long one so here is the condensed version.

I separated the bus from the local receivers and linked then into the local
transmitter using logic gates. I made a couple of PCB's this weekend for
final testing and as soon as I get some time......... It worked on the
breadboard although I don't know if it still controlled anything as I was
using a visible LED so I could see what was happening. I did this pretty
much all on my own although I will send details and pics to Nigel when
everything is finished.

The only down side is, assuming they work, they are designed for only one
Tx
per room. I can send you more info soon (when I know the test results). The
extra components are 3 chips (AND, OR, NOT), two diodes, 1 resistor and a
tranny or thereabouts. Total cost of not very much. The boards however
suddenly got all complicated.

I think they can be added to the current transmitters assuming nothing
drastic changes (like a daughter board). It will mean cutting a track or
two
and a little soldering but hey, not bad for an afterthought.

Ian

-----Original Message-----
From: nick broughton [mailto:mail@xxxxxxx]
Sent: 25 March 2001 08:53
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] IR with Comfort


Ian

How have you implemented the feedback protection?  Did Nigel help with the
circuit?  Is it radically different or just a 'few' extra components?

Having finally sorted RF distribution I know need IR distribution.  I was
about to order some boards from you but as you know, feedback protection is
something I would like in this system.

I'm keen to know more, keep us informed.

Regards

Nick
----- Original Message -----
From: Ian B <I.Bird@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Friday, March 23, 2001 11:58 PM
Subject: RE: [ukha_d] IR with Comfort


> Ahhh, that will be me then.......
>
> There are a couple of flavours. The 'all in one' which has the
transmitter
> and receiver all on one board and the 'normal' variety where the
transmitter
> is on one board and the receiver on another. These can be mixed and
matched
> at will. They all run on 12 volts and use one bus wire to communicate.
I'll
> dig out some pics and send them to you with more of an explanation of
how
> they work.
>
> I am hoping to test a design with some feedback protection built in
this
> weekend but with kids nothing is certain. This will prevent
transmission
in
> a room being picked up by the receiver and then retransmission
happening -
> instant loop. Having said this the IR LED's are quite directional and
> careful positioning of the Tx and Rx solves the problem as well.
>
> More later Clive
>
> Ian
>
> -----Original Message-----
> From: Clive Dilley [mailto:clive@xxxxxxx]
> Sent: 23 March 2001 15:42
> To: 'ukha_d@xxxxxxx'
> Subject: RE: [ukha_d] IR with Comfort
>
>
> where do I get one from?
>
> On Friday, March 23, 2001 1:58 PM, Mark McCall
> [SMTP:mark@xxxxxxx] wrote:
> > A ready-made PCB to build Nigels circuit.
> >
> > M.
> >
> >
> >
> >   >-----Original Message-----
> >   >From:
> >
> >sentto-1109639-8251-985355870-mark=automatedhome.co.uk@xxxxxxx
> >   >om
> >
> >[mailto:sentto-1109639-8251-985355870-mark=automatedhome.co.uk@xxxxxxx
> >   >nelist.com]On Behalf Of Clive Dilley
> >   >Sent: Friday, March 23, 2001 1:55 PM
> >   >To: 'ukha_d@xxxxxxx'
> >   >Subject: RE: [ukha_d] IR with Comfort
> >   >
> >   >
> >   >I must have missed something!!
> >   >
> >   >I know about Nigel's IR transmitters/receivers (when I get
some
> >   >.......), but what is Ian's PCB?
> >   >
> >   >On Thursday, March 22, 2001 5:20 PM, Graham Howe
> >   >[SMTP:graham@xxxxxxx] wrote:
> >   >> Why not just make you own IR transmitters/receivers as
per
> >   >Nigel's design
> >   >> using Ian's PCB's it really is almost too easy to be
true and
> >   >costs very
> >   >> little.
> >   >>
> >   >> Graham
> >   >> -----Original Message-----
> >   >> From: Gareth Cook/STA/Lotus [mailto:gcook@xxxxxxx]
> >   >> Sent: 22 March 2001 16:49
> >   >> To: ukha_d@xxxxxxx
> >   >> Subject: [ukha_d] IR with Comfort
> >   >>
> >   >>
> >   >>
> >   >> Hi All
> >   >>
> >   >> I'm having the new IR module (IRM01) installed with my
Comfort
> >   >system - it
> >   >> will sit in my A/V cabinet to control the VCR, etc.
> >   >>
> >   >> So - is there any way to have a small module wired up
to
> >   >comfort to allow it
> >   >> to receive controls from a 2nd handset in the bedroom,
in
> >   >order to relay
> >   >> them to the a/v cabinet downstairs ? i don't know of
any receivers
> for
> >   >> comfort other than what is in my KP02 IR enabled
keypad.
> >   >>
> >   >> The reason I dont use a generic IR transmitter is the
VCR
> >   >upstairs is the
> >   >> same make as the one downstairs - both Tosh. So if I
were to
> >   >press the power
> >   >> switch for the one upstairs, a generic "send it
all" type
> >   >transitter would
> >   >> also send the power signal to the one downstairs...(!)
> >   >>
> >   >> G.
> >   >>  Gareth Cook
> >   >> Senior Engineering Specialist
> >   >> GeT IT Engineering,Networks,Security
> >   >> IBM SWG, Lotus Park, Staines, TW18 3AG Office:  +44
(0) 1784 445 16
6
> >   >> Mobile:  +44 (0) 7980 445 166
> >   >> Fax:      +44 (0) 1784 499 166 Work: gcook@xxxxxxx
> >   >> Personal: g@xxxxxxx
> >   >> AOL AIM : theboyg
> >   >> Pager : gpage.csc1@xxxxxxx
> >   >>
> >   >>
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