"Jim K" wrote in message
news
On Tue, 29 May 2012 10:07:33 +0100, dennis@home
wrote:



"Jim K" wrote in message
news
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?

Arbor disk in angle grinder or a chain saw.

right..... "inspired & sectionable" Dennis rides in

So you don't want to remove the trees and shrubs you think are causing the
problem?


There are IP cameras with built in PIR detectors.
They don't work through glass.

MMM I already have the cameras with I/O capability - I want to cobble up a
triggering method ...OK?

New cameras might be cheaper and more reliable.
As might be a DVR