Re: Homevision Relay boards ... Interested?

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

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
> Post message: ukha_d@xxxxxxx
> Subscribe:  ukha_d-subscribe@xxxxxxx
> Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
> List owner:  ukha_d-owner@xxxxxxx
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>