On a sunny day (Mon, 16 Apr 2018 19:03:37 +0100) it happened The Natural
Philosopher  wrote in :

>On 16/04/18 18:11, Jan Panteltje wrote:
>> On a sunny day (Mon, 16 Apr 2018 09:54:08 -0700 (PDT)) it happened
>> spuorgelgoog@gowanhill.com wrote in
>> :
>>
>>> On Saturday, 14 April 2018 23:17:56 UTC+1, John H. Guillory  wrote:
>>>>   MG> - mousetraps?
>>>>         What brand home automation Mouse Traps do you use, and are they
>>>> expensive?  Does it tell you when they've tripped, and if they've caught =
>>> a
>>>> mouse?  That sounds like an interesting idea!
>>>
>>> Rentokil ones are about £1300 each
>>>
>>>
http://www.bbc.co.uk/news/av/technology-39058276/mouse-trap-triggers-intern=
>>> et-alerts
>>
>> That is very very expensive.
>> Go to youtube.com , search for 'bucket mouse trap'
>> Put a piece of metal and a microswitch at the bottom of the bucket,
>> connect to raspberry GPIO,
>> write some simple script to test the switch and send data with netcat
anywhere.
>> Alarm beeper on a GPIO out if must be.
>> < 10$ IF you already have a raspi.
>>
>I thought the idea of the bit of metal at the bottom was it would be
>connected to several killervolts...

Yes, I tried a piece of wood with 2 blank wires connected to the mains.
The mice jump, make a lot of noise, but do not die.
In one of the youtube videos I think they had some water at the bottom,
mouse drawns after some time.
You still need a microswitch somehow to trigger the raspi.
Or 2 electrodes, contact when water gets high enough... (mouse moving)
I use that as water detector for in a boat with a raspi,
one extra transistor needed:
 http://panteltje.com/pub/water_sensor.gif
  point 'W' goes to a GPIO input.
The capacitor is to prevent RF sources triggering the thing.

--- SoupGate-Win32 v1.05