First of all I tried the design in Sketchup 8, which is still free
I could try a few designs virtually to see if everything fits.
To build the housing (350mmx110mm), I used 5mm foamed PVC Sheets.
So, I could use a cutter as CNC machine :) ?
To detect if a mouse is inside, I made an infrared barrier.
It was build on breadboard for test, but I was too lasy to make my own PCB, so I ordered it in China.
It took one week and the result is stunning.
I want to use an external power supply, but I decided later, to use the 5V from the raspberry pi.
Pi Camera with Fisheye
I used a cheap fisheye lens to mount in front of the pi camera.
For mobile phones these lenses are fine, because the phones have an autofocus.
The pi camera has a fixed focus so that the picture is blurry.
I will try to change the focus on the pi camera, but not for now.
Transmitter and Receiver
To fix the IR sensors TEMIC K153P inside the trap, I manually milled two grooves.
They were placed behind the 3mm acrylic glass plates.
As you can see, the 9gr. servo motor is already mounted.
Everything in Place
At the back side you will find the Raspberry Pi, the servo motor and then PCB for the Infrared barrier
The release mechanism on the left side is a thin piece of PVC. It is connected over a thin metal bar with the servo motor. Behind the servo is an end switch. This one detects, when the trap was released.
Inside the trap is white LED. It shows me the status of the mousetrap and it is used as
flashlight to take the pictures
The raspberry runs on archlinux.Things to add:
-Web server with live view
-Even if the trap is not airtight,
I will add a few air holes in the cover
No animals were harmed during these tests.
In the trap is always enough food and water for the mouse, to survive until it gets released.
All the mice, I had caught, are free again and on their way home
Thanks for your interest