Re: 2012 and still no perfect UK HA light switch solution?

["bty727563" <derek.kennedy@xxxxxxxxxxxxxx>]

Having feedback about the status of the switch is important to me
(especially with kids leaving things switched on).

My approach is to use relatively inexpensive 'one way' RF lightswitches in
conjunction with a standalone HAHnode unit in every room. The node is
battery powered, and talks to my HA controller via bi-directional RF. It
sends light level/temperature/motion detection signals. The nodes are small
and since they need no wiring can be placed most anywhere in a room.

Writeup at http://www.dbzoo.com/livebox/hah_hahnode

Derek

--- In ukha_d@xxxxxxx, "Phil Harris" <phil@...> wrote:
>
> Pfft! I'm still trying to find Zigbee kit over here! :-(
>
> Phil
>
> > -----Original Message-----
> > From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> > Of marcrfuller
> > Sent: 15 August 2012 08:55
> > To: ukha_d@xxxxxxx
> > Subject: [ukha_d] Re: 2012 and still no perfect UK HA light
switch
> > solution?
> >
> > For me that reason would be confirmation.
> >
> > Imagine Z-Wave was not two way. Send an ON command to a light.
Did that
> > metal pan you moved at lunchtime now blocked that Z-Wave signal,
is the
> > light actually on?
> >
> > It you have two way comms and the unit sends back a confirmation,
you
> > know it is (Well, unless the bulb has blown :D)
> >
> > For me two way comms is not about 'seeing the state of the
system' at
> > any one point. It's about confirmation that the action has been
carried
> > out. An unreliable system can never be trusted to do it's job,
which
> > makes it all kinda pointless.
> >
> > Cheers
> >
> > Marc
> >
> >
> > --- In ukha_d@xxxxxxx, "Stuart Billinghurst"
<stuart@>
> > wrote:
> > >
> > > But why is a current state of every light needed in an
install from a
> > > function point of view not aesthetic that's a different
thing
> > > entirely, because I toyed with this concept for long time as
I
> > started
> > > to design of my own systems, and came to the conclusion that
the only
> > > time I needed to really know the status was if I wanted to
act upon
> > > it, so I only need to know a light is on, if for instance I
wish to
> > > turn it off, but if I don't know it's status and then send
an off, I
> > > know it's off even if it was off before (I hope this makes
sense) in
> > > which case two way is just an aesthetic consideration,
unless I have
> > missed a functional need somewhere?
> > >
> > >
> > >
> > > Stuart.
> > >
> > >
> > >
> > > From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On
> > Behalf
> > > Of Mark J Cox
> > > Sent: 14 August 2012 19:35
> > > To: ukha_d@xxxxxxx
> > > Subject: Re: [ukha_d] 2012 and still no perfect UK HA light
switch
> > solution?
> > >
> > >
> > >
> > >
> > >
> > > On Tue, Aug 14, 2012 at 6:37 PM, Stuart Billinghurst <
stuart@
> > > <mailto:stuart%40billinghursts.com>
> wrote:
> > >
> > > > Odd question, and humour me... but why do you need 2
way comms?
> > > >
> > >
> > > So you can tell what state each switch is in even if it has
been
> > > locally changed (i.e. you can have a display of the state of
all the
> > lights).
> > > LightwaveRF
> > > looked promising for a while (inexpensive, nice looking,
even if not
> > > zwave) but failed this.
> > >
> > > Mark
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
> >
> >
> > ------------------------------------
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
>



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