Step 7: Electronics
When I decided to use it for this project I was hoping I could use the prongs somehow as a switch to turn on and off the chirping in my chickadee, but the only way the circuit would stop chirping is if I dunked the prongs in salt water. I really didn't want to dunk my chickadee into salt water to stop the singing so I had to explore other options. The circuit board also has a LDR resister so that the plant moisture meter doesn't chirp at night. This seemed like a good way to control the circuit.
So what I did was to trim off the LDR resister and solder a wire to each side where it connects to the circuit board. Now if the two wires come together the circuit is on and there is chirping. I would wrapped each end of the wire around a magnet and when they are connected by a piece of metal the circuit is turned on. So when the chickadee sits on the table there is no chirping but when I move it to the perch where it sits on a small piece of metal it starts to sing.