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How to electronicly detect a pest trap has been triggered.
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Croadie:
Mr Packethead

how did you get on with this - I'm really interested inthe same thing - inthe middle of setting up a predator free program in Hawke's Bay
Many thanks

Richard
Circlotron:
A magnet on the moving part and a reed switch or Hall Effect sensor on the stationary bar?
tautech:
The pic shows the kill trap in the tripped position when the kill bar is on the trigger pad.



When the kill bar is cocked and loaded it’s vertical and perfect to have a micro switch mounted on the rear frame for the kill bar to contact against.
Then all you need is the comms device.  :)
Marco:
There seems to be some room beneath the "treadle" which will move down when the trap springs. You should be able to measure the increased proximity of the treadle. Inductive, capacitive or even optic could work ... but optical would be more sensitive to fouling. Distance too short for ultrasonic.

For the rest it depends on how available networks are. If there is good mobile phone coverage a phone modem is always an option. Otherwise LoraWAN or setting up your own 433 MHz narrowband network.
Circlotron:
Think like it’s 1890.
Tie a string around the top of the bar. The other end of the string connects to a U shaped link that gets pulled out of a socket when the trap goes off.
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