Re: Homevision Relay boards ... Interested?

["Alancc" <alan.cc@xxxxxxx>]

DOH.... Just thought about it a bit more, it makes sense now!

Alancc
----- Original Message -----
From: Alancc <alan.cc@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Friday, October 12, 2001 6:53 PM
Subject: Re: [ukha_d] Homevision Relay boards ... Interested?


> Does the HV not operate one outputs one at a time, i.e. carry out its
> instructions in a sequential manner?
>
> Alancc
> ----- Original Message -----
> From: Phil Harris <phillip.harris1@xxxxxxx>
> To: <ukha_d@xxxxxxx>
> Sent: Friday, October 12, 2001 6:53 PM
> Subject: [ukha_d] Homevision Relay boards ... Interested?
>
>
> >
> > Hiya Guys,
> >
> > Ian B and myself have been sitting here this afternoon trying to
design
a
> > relay board to control my electric curtains ... we thought that
instead
of
> a
> > purpose built board to do exatcly what I need it might be useful
to have
a
> > general purpose relay board.
> >
> > Throwing around ideas we have come up with the following
"rough
> description"
> > and are wondering whether there would be much interest from the
group
for
> > this as either a PCB or a built unit.
> >
> > The board will take up a complete output port on HV. Four of the
port
> lines
> > will be "relay select" lines, a fifth would be a
"status" line (On/Off)
> and
> > a sixth would be used as a "set" line to get the relay
board to read the
> > output port and perform the requested setting.
> >
> > For example to turn on relay 4 you'd set the bottom four lines on
the
port
> > to OFF,ON,OFF,OFF (Binary Coded Decimal for 4), the
"status" line to ON
> and
> > then the "set" line to ON to action the command.
> >
> > This would give you sixteen individually addressable relay
outputs that
> > would retain their state until changed again or until the power
went
off.
> >
> > It was discussed that the remaining two output lines could be
used as
> "board
> > select" lines which would enable up to 64 individually
addressable
relays
> to
> > be controlled from a single HomeVision output port with the
boards
planned
> > as being stackable or daisychainable units.
> >
> > Now, we haven't looked too deeply into this so we have no idea
what kind
> of
> > costs would be involved or even at the moment what the
programming for
the
> > output ports would be like but we were wondering what kind of
interest
> there
> > would be from the group for such a board if we were to get it
working.
> >
> > Anyone interested if we decide to progress this further?
> >
> > Phil
> >
> >
> >
> > For more information: http://www.automatedhome.co.uk
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> >
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> >
>
>
>
> For more information: http://www.automatedhome.co.uk
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