On Mon, 28 May 2012 23:36:52 +0100, Davey wrote:

On Mon, 28 May 2012 20:00:48 +0100
"Jim K" wrote:

getting Pd off with motion detecing IP cams sending 100s of emails
of moving bushes and sunshine/shade changes.

One of the IP cams has 2 channels for I/O - so I'm pondering how to
send a signal to it to take a snap when something goes across the
cam;s field of view.

PIR would be perfect but a very narrow "beam" is required to make
sure I get the subject in the centre of the frame... and the IP cam
is not going to be happy with 240v up its I/O - so ???

low voltage PIR? what from where?

a normal 240v PIR and some sort of a relay?

something else?

Cheers
Jim K

Zoneminder has very closely programmable Zones, to let you define
where you want something to trigger the alarm, and recording.
http://www.zoneminder.com/
No PIR, just the camera feed.
If this is way off track, apologies.

ZM also needs a PC running 24/7..

Jim K