RE: Interfacing PIR's

[Keith Doxey <keith.doxey@xxxxxxx>]

Hi Darren,

you need a Digital Input Output Card or DIO for short
Maplin have a 24 line card for 79-99
BrainBoxes PC DIO 24    order code KT78K
Info at http://www.brainboxes.com/digital.html

That should be able to accept the input directly if you connect the contact
to Ov ant the input pin. At worst, you will need a 1 kohm resistor between
the input pin and +5v as a pull up when the contact is open although it
probably isnt required.

Keith

> -----Original Message-----
> From: Henderson, Darren [mailto:Darren.Henderson@xxxxxxx]
> Sent: 11 August 2000 12:57
> To: 'ukha_d@xxxxxxx'
> Subject: RE: [ukha_d] Interfacing PIR's
>
>
> Ok diagram came through well, but what do I use in the HA PC
> to pick up
> these outputs ?
>
> Patrick has mentioned an ISA card he has that can accept the
> outputs as you
> described, and Dan mentioned a serial device (what is this
> device Dan ?, any
> more info ?) that can do something similar. Now I realise that some
> programming will have to be done, but once I have a method to
> interface the
> outputs to a PC, then I can write something to inform Homeseer.
>
>
> Sorry about sounding like a newbie, but I am :o)
>
>
> darren
>
> > -----Original Message-----
> > From: Keith Doxey [mailto:keith.doxey@xxxxxxx]
> > Sent: 11 August 2000 12:49
> > To: ukha_d
> > Subject: RE: [ukha_d] Interfacing PIR's
> >
> >
> > OK,
> >
> > its taken a while for me to reply but here is a simple diagam and
> > explanation.
> >
> > Use the existing contact to operate a small double pole relay.
> > Use one of the relay contacts to connect to the alarm panel.
> > Use the second relay contact to connect to a Home Automation
system.
> >
> > You have a choice of either normally open or normally closed
> > connection to
> > choose from.
> >
> > On the diagram, ALL contacts and relays are shown in their
> > RELEASED state.
> > In normal use the door/PIR contacts would be closed and the
> > relays OPERATED.
> > That way, a relay failure will cause an alarm giving you a
failsafe.
> > That is how the existing PIR relays are connected.
> >
> > Hope the diagram helps
> > Hope the diagram gets through as well, if not let me know and
> > I will mail
> > direct.
> >
> > Keith
> >
> >
> >
> > > -----Original Message-----
> > > From: Henderson, Darren [mailto:Darren.Henderson@xxxxxxx]
> > > Sent: 10 August 2000 11:40
> > > To: 'ukha_d@xxxxxxx'
> > > Subject: [ukha_d] Interfacing PIR's
> > >
> > >
> > >
> > > Hi All,
> > >
> > > Following on from Nigel's post about IR enabling PIR's, I
> > > have the following
> > > question.
> > >
> > > I have a "standard" alarm in my house which I have
been able
> > > to interface to
> > > my HomeSeer X10 setup using powerflash modules.  With these
> > > attached to the
> > > panel I am able to pass the alarm status (armed, disarmed,
> > > alarm etc) to
> > > HomeSeer via X10.
> > >
> > > Next I would like HomeSeer to know the status of the PIRs
> > > around my house.
> > > However I don't want to be buying an expensive powerflash
> > > module for each
> > > PIR.
> > >
> > > Does anyone have any ideas on how I could interface my
> > alarm inputs to
> > > my PC so I can inform Homeseer about the PIR states, of
> > > course this should
> > > be in an inexpensive and reliable way :o)
> > >
> > >
> > > Thanks
> > >
> > > Darren
> > >
> > >
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