RE: Idea for IR zoning with HV

["Ian B" <Ian@xxxxxxx>]

Hi Graham

Hook the signal from the IR +ve into the relay board I am building and
control it as you describe using the output ports of HV. I am not sure
but
the board may also be able to be controlled from the digital output
ports
(but I am not sure yet).

IR LED's only need two wires. The live feed and a switched ground
usually.
This is perfect for the way the relay board works.

Ian B



> -----Original Message-----
> From: graham_howe [mailto:graham@xxxxxxx]
> Sent: 25 April 2002 14:05
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Idea for IR zoning with HV
>
>
> I *think* I have an idea for achieving zoned IR distribution from
> HomeVision without an expansion board, but I would like to hear
> others opinions as I have very little experience with HV beyond
X10.
>
> The aim is to have HV send a specific IR signal to 1, some or
> all 'zones'. Specifically I want to control each of my 3 DDAR's
> independantly some of the time and synchronised sme of the time.
>
> As I understand it, an IR LED requires three wires (I am
deliberately
> being simplistic in terms of the electronics because I don't know
> much about it!), SIGNAL, +tve, -tve. So if SIGNAL comes out of the
> single HV IR output and into a Krone block, it can be split to
> multiple wires. The power (+tve presumably) could be controlled
> (switched) from other HV outputs, one for each zone.
>
> Macros would then be used to run the following sequence:
>
> - supply power to 1 or more zones
> - send IR signal to all zones
> - stop power to all zones
>
> The signal will of course have no effect at the IR LEDs that have
no
> power.
>
> This seems to give zoned IR without any additional hardware (other
> than the IR LEDs of course) and would certainly be much cheaper
than
> expansion boards or dedicated distribution blocks.
>
> So what does everyone think, and even better, would someone like
to
> have a go at prototyping this (I have zero time available at the
> moment).
>
> Regards
>
> Graham
>
>
>
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