A Wailing Siren Circuit using IC 555 is simple to make sound like real siren, going up and down in pitch, also the sound come from 555 IC making pulses at certain speed (frequency). Circuit Working: Parts List: Components Values Quantity Resistors 390Ω, 1k, 220k, 100k, 33k, 22k 1/4 watt 1 each Capacitors Ceramic 10nF […]
Mini Projects
Simple Light Dependent Screamer Circuit
Fun small and Simple Light Dependent Screamer Circuit make sound change with light; it uses LDR like a special resistor which changes with light. Furthermore, as the light intensity increases, the sound becomes louder or higher in pitch, therefore, we call this circuit a Light-Dependent Screamer. Circuit Working: Parts List: Components Values Quantity Resistor 1k […]
Simple Ticking Bomb Simulator Circuit
This post is about a Simple Ticking Bomb Simulator Circuit, which make ticking sound like real bomb in movie or game. Also, this circuit is just for fun and with no real danger. Circuit Working: Parts List: Components Values Quantity Resistor 47k 1/4 watt 1 Capacitors Electrolytic 10μF 25V 2 Semiconductors IC 555 1 Speaker […]
Simple Metal Detector Circuit using IC 555
This is Simple Metal Detector Circuit using IC 555, uses IC 555 chip which works like small clock and makes signal to help find metal and magnet Also, it is easy to build and good for beginners. Circuit Working: Parts List: Components Values Quantity Resistor 47k 1/4 watt 1 Capacitors Electrolytic 10μF 25V 1 Electrolytic […]
Simple Toy Organ Circuit using IC 555
This is small and Simple Toy Organ Circuit using IC 555 make sound like music when we press a switch. We use an IC 555 in astable mode to generate sound and when the user presses different switches, the circuit produces different tones. Therefore, the circuit is simple to construct and serves as an excellent […]
Simple Mains Phase Detector Circuit using CMOS ICs
This article talks about two easy and Simple Mains Phase Detector Circuit using CMOS ICs like IC 4001 and IC 4060; also they find if mains AC 220V or 120V is present in air. There is no need to touch the mains, circuit uses antenna to feel mains power in air. Circuit Working (using IC […]