RE: Re: Bathroom project - Cbus style lighting system....1 room only though!!

["Tim" <timsyahoo@xxxxxxxxxxxxxx>]

Hi Noel, glad you like it :-)

Try this one:
http://www.danlers.co.uk/pir/ceflpirsealed.html
I've only just skim-read the description, but I think if you put the
time-clock in the place of the "alternative switch" (see wiring
diagrams)
you'll avoid the lights always coming on for a minute or so when they enter
auto mode at night. Double check your wiring though to avoid breaking
something...

I forgot to mention I have my garage light - the one inside the garage - on
a PIR (not a Danlers PIR though) to avoid it being left on all the time and
it works very well.


Also try http://www.cbus-shop.com/ for Cbus
gear.

Good luck,

Tim.


> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
> noel_pilot
> Sent: 29 September 2008 21:51
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Re: Bathroom project - Cbus style lighting
system....1
> room only though!!
>=20
> Much as I'd love cbus the more I think about this, the smarter it is!!
>=20
> I'm also thinking I could have either a second motion detector on the
> normal switched circuit to have motion activated lights all of the
time.
>=20
> Can someone point me in the direction of these PIR's that will do this
> kind of job, i'm struggling with my search terms!
>=20
>=20
> --- In ukha_d@xxxxxxx, "Tim Hawes" <timsyahoo@...>
wrote:
> >
> > Noel,
> >
> > I'm sure a CBus solution would give great flexibility but you're
> > paying a lot of "overhead" if you only do one room.
> > I reckon you can do DIY the "dim night light on a
sensor" thing for
> > around =A3100 =96 it won't be based on any fancy automation
though. It
> > also assumes that the lamps/transformers you already have are
suitable
> > for dimming.
> > (it's based on a scheme I've been thinking about for my bathroom,
but
> > I don't want the PIR bit)
> >
> > You'd run two parallel circuits from the existing ceiling rose to
the
> > light(s) you want to come on dimmed. One circuit is as now =96
just the
> > switch. The second circuit contains a time-clock (get an
electronic
> > one so it doesn't drift in power cuts), a PIR (some
"nice"
> > ceiling-mount ones around =A330-=A340) and a conventional dimmer
switch
> > (conventional as in one you'd fit to a wall box but suitable for
> > dimming the type of lights you have).
> >
> > Your existing switch works at all times so if you get up early to
> > catch a plane etc you can still put the lights on full with the
cord.
> > The second circuit only works between the on/off times you set
(e.g.
> > midnight to 5am). When the time clock is off the PIR output
doesn't go
> > anywhere, when the time-clock is on the PIR switches on the
lights
> > through the dimmer switch which you've manually set to get the
right
> > light level.
> >
> > The only potential problem is that I've found PIRs always come on
when
> > power is first applied, then go off. So having it after the
time-clock
> > means the light would always come on at midnight (or whatever)
when
> > the clock circuit is activated. I couldn't see how keeping it
powered
> > 24/7 would only activate the light between set times.
> >
> > The time-clock and dimmer could go in the loft, or perhaps in the
> > airing cupboard to make adjustments that bit simpler. You'd
probably
> > want to fit a master isolation switch in front of all the smarts
too =
=96
> > just to make sure the auto side of the circuit doesn't
unexpectedly
> > become live if the clock gets out of sync. Fixed wiring
time-clocks
> > are also available so you don't have to wire-in a separate 13A
socket
> > for a plug-in jobby.
> >
> > I think that all makes sense, I don't *think* I missed anything
> > obvious, but you never know :-)
> >
> > If you're feeling *really* adventurous you could drop the ceiling
by
> > 6", run rope light around the edge and have the rope light
come on via
> > the timer/sensor during the night. Or rope light under the sink
and/or
> > bath.
> > Or perhaps just connect one of the 6 downlighters to the
auto/timer
> > circuit and do away with the dimmer altogether.
> >
> > I shall now don my flameproof suit and ignore the cries of
heretic!!
> >
> > HTH,
> >
> > Tim.
> >
> >
> > On Sun, Sep 28, 2008 at 12:23 PM, noel_pilot <HA@...>
wrote:
> > > Hi all,
> > >
> > > I remember reading way back about someone who had a lighting
setup
> > > whereby they have occupancy detection so lights come on
automatically
> > > but with intelligence, i.e. if its 0200 only turn the
landing/bathroo=
m
> > > lights on to 15% or so so as not to blind you in your sleepy
state!!
> > >
> > > I love this idea and would love to be able to replicate it
for this
> > > project.


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