ZoneMinder Forums

I've got a construction site that for the moment, I've given up installing additional cameras into, as they tend to disappear whenever there's a break-in. From another project, I have a nice motion sensor, which would theoretically set off the fire horn (big, loud thing) & a couple of customizable wall-mount alarms, ideally scaring them away. I don't think professional criminals are exactly the target audience.

Anyway, what can I plug in-between so that when the motion sensor trips, it kicks off a timer to power the noises, so they shut up in, say 5 minutes. (Until tripped again).

I believe what I want is somewhere between a relay and a timer, but not being versed in such things, can't figure out what product would actually accomplish this task. I seem to be able to find time-delay relays that will wait x amount of time before activating after getting contact, but I need one that will activate on contact and stay that way for x amount of time.

Probably could have explained that in fewer words.

I looked into that suff like this once

For triggering from the motion sensor you just really need the relay and a 555 timer chip(one you understand the 555 timer it pretty easy to figure out)
http://www.kpsec.freeuk.com/555timer.htm
Basically replace switch with motion sensor and bleeper with siren and relay


But if you want cams to do motion detection the simplest way is the parallel port and a relay.

Port info(windows specific) :
http://www.codeproject.com/KB/cs/csppleds.aspx

Relay Cheap(its overkill for size but):
http://www.mpja.com/prodinfo.asp?number=17154+RL


Linux Specific Instructions:
http://orionrobots.co.uk/tiki-index.php ... ED%20Board

Just Replace LED with the relay.

Then my suggestion is to go into zoneminder and make a filter for mation detected and then put the python script path in Execute command on all matches

the all important horn
http://www.a1components.com/itemdisplay ... item=11932
Just My 2 sense