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How to electronicly detect a pest trap has been triggered.
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mrpackethead:
I am wanting to electronically detect if a pest trap has been triggered.   It does'tn have to be detected in real time, it can be done periodically. ( ie, check once every x hours )..   I'm wondering what kind of sensor system might be useful for this.

Its got to be low powered as well.. ( needs to run off batterys.. ).  I'll have a low power microprocessor and radio to process the message..

Anyone got some great ideas.
vk6zgo:
That thing is going to make a seriously loud noise when it trips, so how about a microphone?
Dedicated "mute" ICs used to be available which were used in radios, so if you can get one which just presents a logic level change at its output, you are halfway there.

If you have to fart around setting levels & stuff with a PIC or whatever, it is a bit more messy, but still do-able.
Tac Eht Xilef:
Those are usually fixed in a box/tunnel - why not just use a waterproof microswitch or a car interior light door switch (with rubber boot), mounted on the side of the box & held operated by the hammer when set, as the sensor?
ez24:
Is the trap for kangaroos ?  Never seen it before.

Seems a micro switch would work.
GigaJoe:
simple pulse light sensor working on reflection from the part when it off. of course this parts shouldn't be there when armed.
Option 2, a hair like coil wire torn when it moving.
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