Introduction: How to Make a Alarm Plate

Picture of How to Make a Alarm Plate

A basic plate or switch which makes noise when pressed

Step 1:

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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

Step 2:

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put the sponge and wood together. like shown.

Step 3:

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attach foil with tape to the wood. When the foil makes contact the switch will start

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get batteries with a switch. You might want to sold wires to the compartment.

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now get a motor. if you don't sold the wires it might be difficult in the next step.

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now attach the motors wire to the bottom foil part. Attach the positive battery wire to the top foil. Also ready the battery negative wire and make contact with that and the motor.

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Step 8:

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now after making the contact with the motor press on the wooden plate and the motor should turn on making noise. Always remember to check the foil.

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Step 10:

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you can add a sound amplifier to your pressure plate by using speakers with the motor. Or you can make it louder by putting tape on the motor. if the tape hits paper see what happens

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Hope you like the instructable.$$$!!!!


the electrical engineer (author)2013-12-12

Really nothing at the moment i make and break it

About This Instructable




Bio: I do a little of everything. I like electronics. Chemistry physics and robotics.
More by the electrical engineer:How to make the elecgo carTo take care of a parakeetHow to take care of a tortoise
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