Re: motion detectors: need some input

["rectorydp" <dpullen@xxxxxxxxxxxxxxxx>]

Tom

Sorry I was a bit late with my response...

What I meant was that you have to delay pressing a switch to ensure
that the X10 signal is put on the powerline. If you press two buttons
together only one will operate. This was the issue that could cause
the most problem with PIRs. It is possible that a trigger would be
missed entirely. However, it does depend upon how long the PIR
triggers for and what happens if two switches are operated together
for a period of time. I can't test with my TMD4s as they are
configured to issue dim commands once the switches are held down for
more than 0.5s. I do hope it works ok for you.

BR
David


--- In ukha_xpl@xxxxxxx, Tom Van den Panhuyzen <tomvdp@g...>
wrote:
> Too late!  I am an impulsive buyer :-)
> Disappointment 1: received TMD4's instead of TMA4's.
> Disappointment 2: the micromodules don't switch 240V, they detect
> open/close only.  My mistake...  I thought that the current from the
> switch would be used, but in fact the switch must be connected
> directly to the TMA4.  No problem for the switches (they are wired so
> that I can decouple them from the mains and connect to the TMA4
> without too much hassle) but I have also bought 240V PIRs.  So I will
> have to add relays for these.
>
> I will put a photoshoot online of the evolution of my project:
> - wiring before the start
> - wiring done
> - the fireworks when the power is switched back on
>
> I understand that a 1 sec delay to switch on the light when you push a
> button is irritating, but I think here it is less important.  There is
> already 1 motion detector in use.  It goes via the rf receiver so I
> guess it is even slower.  I need to go into the garden quite often in
> the dark (to feed the pigs, yep:-) so it is not vital the response is
> immediate as long as its reliable.
>
> Thanks for the feedback.
> Tom
>
> On Fri, 14 Jan 2005 17:14:29 -0000, rectorydp <dpullen@f...>
wrote:
> >
> > Tom
> >
> > I wouldn't recommend the TMA4 for use with PIRs. I use the TMD4
with
> > momentary switches to control some of our lights and you have to
allow
> > at least a second between switch presses to ensure that the
signals
> > are put on the power line. I suspect that the TMA4s have a
similar
> > delay. Of course the location of the PIRs may mean that youy will
not
> > have problems with signals close together but you will be able to
make
> > that judgement.
> >
> > There will also be a time delay in transmitting the X10 over the
power
> > line. I think you will find that this additional delay will make
the
> > operation of the PIRs irritating - they will just be a bit too
slow.
> >
> > Just my opinion, of course.
> >
> >
> > BR
> > David





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