Instructables
Picture of Tone generating circuits
If you want to make some sound from your speakers but you don't have ipod or any other mp3 source you've come to the right place. The circuits given in this instructable will make some sound from your speaker. All of the circuits given in this instructable are based on a 555 timer/oscillator ic. This instructable has only 5 circuits but there are many other circuits.

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Step 1: 555 ic

Picture of 555 ic
First you should start with your 555 ic. In order to make the circuits in this instructable you will need to know a about the 555 ic. For this you need you only need to know about the pinout. The pinout is given in this step.

Step 2: First circuit- screamer

Picture of First circuit- screamer
The first circuit is a very simple one. It requires very less things and is very inexpensive. It is called screamer. The things that you need to make this circuit are

555 ic
1 k resistor
10 uf capacitor
0.1 uf ceramic capacitor (104)
8 ohms speaker
6 to 9v power source

It can be powered by a power source of 6 to 9 volt. It will generate a very loud screaming tone. The schematic is given in this step.

Step 3: Second circuit- machine gun

Picture of Second circuit- machine gun
The second circuit is a little complex and requires a few more items than the first circuit. The things that you need to make this circuit are

555 ic
Bc 557 transistor
100 k resistor
33 k resistor
10 uf electrolyte capacitor-2
100 if electrolyte capacitor
0.01 uf ceramic capacitor (103)-2
8 ohm speaker
6 to 9v power source

It can also pe powered by 6 to 9 volts. It will generate a tone similar to the sound of the machine gun. The schematic is given in this step.
ak088201 year ago
Would it be possible to provide sound clips from each circuit?
have you actually built these? it would be awesome to see a demo video of each of them, I don't think I've ever heard a machine gun or wailing siren. thanks!
jumper1111 (author)  amandaghassaei2 years ago
I've built all of these amd they work