An integrated circuit can be used to make an electronic noise maker.
An electronic noise maker that can be used during parties and celebrations is a simple device that anyone can build. Because anyone can build an electronic noise maker, it can also be used for jokes and pranks. Even though building your own electronic noise maker involves using a soldering iron, it is simple to make and can be built in an afternoon. Although this electronic noise maker only produces one tone, the components used in it can be varied to give any tone.
Instructions
Build an Electronic Noise Maker
1. Calculate what note you want your electronic noise maker to sound like. If you use a 500 microfarad capacitor, the circuit will sound at about 950 hertz, or about two octaves above middle C on a piano. If you want your electronic noise maker to have a higher sound, use a 420 microfarad capacitor. If you want your noise maker to have a lower sound, use a 620 microfarad capacitor.
2. Solder components to a 555 integrated circuit. Review the diagram on the 555 data sheet to familiarize yourself with the pin numbering. Begin by joining pins 2 and 6 on the 555 chip with wire. Join one side of the speaker to pin 3 and the other side of the speaker to the black battery lead. Solder pins 4 and 8 to the red battery lead.
3. Solder one resistor to both pins 7 and 8 on the 555 chip. Solder the other resistor to both pins 6 and 7 on the 555 chip. Finish the circuit by soldering one lead of the capacitor to pin 6 and the other lead to the black battery wire. Refer to the diagram at CSGNetwork.com if you are confused.
4. Connect the battery to the battery clip. The speaker should make a high-pitched buzz. Find a box for your electronic noise maker. Use your noise maker for celebrations and jokes.
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