Here the circuit diagram of electronic siren based NE555. This circuit produces a sound like factory siren. It applies a 555 timer IC which is […]


This is the circuit diagram of beeper sound. The circuit will generate the sound of a beeper which similar with the one in pagers. It […]

Do you have a bicycle..? why don’t try to build this circuit..?. Powered using battery 3-6V. This circuit will help the bicycle driver in the […]

This is the very simple way to play a song with single 1.5 battery. You can build this circuit for gift acceccories. When the gift […]

Here is the circuit diagram of lantern dimmer / flasher designed by Tony Van Roon: There are two circuit modes: dimming and flashing. The flasher […]

Here the circuit diagram of eight sound effects generator. The circuit will generate 8 type of sound effect, amplify the audio signal, so you will […]

This insect repellent circuit will repel insects such as mosquitoes, flies and cockroaches from your home or yard effectively. circuit uses a specific frequency to […]

This simple 220V light dimmer circuit can be used to adjust the brightness of mains lights. It also can be used to adjust the speed […]

This is a sound activated switch circuit. It’s will turn on and turn off based on a loud sound such as clapping your hands. You […]