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How to electronicly detect a pest trap has been triggered.
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Doctorandus_P:
This trap looks like it goes off violently.
I would probably not trust a reed switch in this setup, the're too fragile, but a HALL sensor would work, or even a simple Microswitch that is activated when the trap is in the armed position.
fcb:
I think I would use audio - that trap is going to make a sharp sound when it goes off - so use a microphone in the equivalent of a PIR sensor circuit. Could be made with very low idle current, easy to adjust and test.  The output would drive a pulse stretcher (comparator) which goes to whatever you need to drive.

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