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Re: IR systems, the choices
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Hi Nik
The
concept
Steve is explaining is currently being developed by Ian Bird . The
Transmitter and Receiver could be in the one housing but may not be .
I
would imagine if these networked units are currently available they
would
cost a small fortune . Thats one reason why some of us are developing are
own
units.
Frank Mc
----- Original Message -----
Sent: Friday, July 19, 2002 8:29
PM
Subject: RE: [ukha_d] IR systems, the
choices
Yes,
I've got you.
Then
if you are using same cable for transmitter and receiver, I asume that they
must be in the same housing. Where to find such Tx/Rx
devices?
Nik
No, all 7 nodes would be connected to the same
three wire bus network, and at one end of this network the three wires
which
make up the RS485 network, are converted into RS232, which then plugs into
the serial port.
like this
NODE 2
NODE 1
RS485/232========PC
I I I
I I I
I I
I
------------I--I--L-----------------------I--I--L---------------------I--I--I
------------I
L--------------------------I---L-----------------------I--I
------------L-----------------------------L--------------------------I
do you see what I mean?
Havnt got time at the moment to do a proper
drwaing with paint, but I hope that shows what the network would be
like.
HTH
Steve
----- Original Message -----
Sent: Friday, July 19, 2002 1:44
AM
Subject: RE: [ukha_d] IR systems, the
choices
So, if you want to have 7 zones (rooms), where do you connect them
to?
7 serial ports?
Nik
>How
your system topology looks like? You connect all the Tx/Rx units
into
>your IR controller, I suppose, and then connect your
controller via serial
>port to PC. Is that
right?
>
>>>>Yep pretty much as I see it. They are
all separate nodes on a 3 wire
>RS485 network which goes back to
the computer to do most of the work, this
>enables easy
programming of them so you don't have to reprogram each PIC
>chip,
which would take a while, and need good coding skills in C.
This
mystical controller does not exist unless you consider the PC as
it.
All the units are standalone (you need two to make anything
happen though)
and when connected to a PC will become a very powerful
system - or that's
the plan anyway.
All my stuff is programmed
in assembler!! Only the PC app will be high level
e.g. VB
Well
said on the rest Steve.
Ian B
>-----Original
Message-----
>From: Steve D
[mailto:steve@xxxxxxx]
>Sent: 18 July 2002
09:48
>To: ukha_d@xxxxxxx>Subject: Re: [ukha_d] IR
systems, the choices
>
>
>----- Original Message
-----
>From: Nikola Kasic
>To:
ukha_d@xxxxxxx>Sent: Wednesday, July 17, 2002 11:57
AM
>Subject: RE: [ukha_d] IR systems, the
choices
>
>O.K.
>I've got the picture. That means that
you can even convert signals if you
>have 3 Sony TVs so you can
send for Lounge Panasonic code for Volume+ and
>your system will
convert into Sony Volume+ and send in Lounge only. If you
>send
Sony Volume+ it will not convert it but send to bedroom only. If
you
>send Grundig Volume+, it will be converted into Sony Volume+
and send into
>Bedroom 2 only. For source, you'll need ideally,
something like Pronto.
>
>>>>You will be able to
script the commands based on events, say if
>you had a
>sony
tv in the bedroom, and you where in the bedroom and you put the
volume
>+ the RX part of the unit would pick this up and then do
nothing,
>as you are
>using the remote for the tv in the
room, so you would not want this command
>sent else where. A
pronto would be the best option to control each item
>individually
>from
need for Tx, and how many
>for Rx? You
>are talking about
Tx/Rx units, so it seems like a single
unit.
>
>>>>It is on a BUS network, so you need
three wires going into the unit, and
>three wires coming back out,
also you need 12 power to it, so
>thats an extra
>two
wires.
>Which totals 8
>
>Will then single Cat5 be
enough for connecting it?
>
>>>> Yes, all patched
back to a central location the right wires
>connected up
>so
it's in a bus configuration and they have power, and one end of the
BUS
>(three wires) being connected to a RS485 to RS232 convertor
to a pc to
>control the scripting.
>
>How they must be
placed to prevent looping?
>
>>>>>They have
inbuilt protection for this (or they will) and it is
all
>scripted, so in theory you can protect it yourself using
timers.
>
>Where can I find those Tx/Rx
units?
>
>>>> Ian B is building and designing them
himself, they are not off the
>shelf, and are a unigue specif
design to accomadate the indvidual
>addressing
>ofr each
TX/RX combo unit.
>
>A saw them in many shapes on pictures
on people's web sites. I
>would like to
>know if they can be
flush mounted in an switch box, so I can put cable in
>place and
cut boxes and cover them with blank faceplates, until I get
Tx/Rx
>units?
>Where can I buy them anyway? I see that they
are mostly homemade.
>Can I find
>finished products
anywhere?
>
>>>>>See above
>
>How
your system topology looks like? You connect all the Tx/Rx units
into
>your IR controller, I suppose, and then connect your
controller via serial
>port to PC. Is that
right?
>
>>>>Yep pretty much as I see it. They are
all sepereate nodes on a 3 wire
>RS485 network which goes back to
the computer to do most of the work, this
>enables easy progamming
of them so you don't have to reprogram each pic
>chip, which would
take a while, and need good coding skills in
C.
>
>Cheers,
>Nik
>
>
>>>>>>HTH
Steve
>I am sure Ian B can correct me if I have got any of this
wrong.
>
>
>
>For more information: http://www.automatedhome.co.uk
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