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RE: IR systems, the choices
- To: <ukha_d@xxxxxxx>
- Subject: RE: IR systems, the choices
- From: "Nikola Kasic" <nikola@xxxxxxx>
- Date: Fri, 19 Jul 2002 11:29:29 +0100
- Mailing-list: list ukha_d@xxxxxxx; contact
ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
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 one
location. > >Now, my question is how many wires you 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 >Post
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