RE: External PIR

["Steve Morgan" <steve@xxxxxxx>]

You can get a seperate PIR for outdoor lighting. I used to have an MK
one. Since external PIRs are mostly mains switching, I added a mains
operated relay and used the NO contacts between the RTS and CTS pins on
the PC's serial port. Then, whenever the PIR triggers, you get a CTS
state change on the serial port. Most PIRs only operate at night, so if
you want 24 hour signalling, put some heatshrink or tape over the LDR.

Alternatively, you could just try to waterproof an MS13

Cheers,
Steve

> -----Original Message-----
> From: Simon Brazier [mailto:simon@xxxxxxx]
> Sent: 30 April 2003 15:12
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] External PIR
>
>
> I want to get some sort of motion detection going for my back
> garden. I don't want to get a floodlight with a PIR on it, I
> would prefer some form of PIR on the outside wall, which then
> sends X10 either directly or via a closing contact, to turn
> on some lamps or the radio or something inside the house via Homeseer.
>
> I'm not impressed by the X10 Floodlight unit as I don't need
> to light a stadium, and don't want to mount the unit on the
> wall with no bulbs in.
>
> Anyone got any ideas ?
>
> I initially thought of drilling through the back of a
> internal wall socket which is on an external wall, and using
> one of the newer extra small X10 modules within the socket
> somehow, but don't want to go and buy one if the plan is a
> non-starter.
>
> Someone must have done this before, so anyone got any help ?
>
> Cheers.
>
>
>
>
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