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Picture of how to make a alarm plate
A basic plate or switch which makes noise when pressed

Step 1:

Picture of
An alarm plate is a basic switch which will activate when pressed. the materials you'll need are listed below.

1. peices of plastic or wood i used wood.
2. sponge or foam
3.foil aluminum
4. A few wires.
5 a battery compartment. it is nice to use more than 3 batteries if you use the sound amplifier.
6. motor or any sound making device.
7. speakers

 
the electrical engineer (author) 1 year ago
Really nothing at the moment i make and break it