RE: IR systems, the choices

["Ian B" <Ian@xxxxxxx>]

>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.
>
>
>
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