555 timer circuits
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LED Roulette Circuit using 555 timer IC Here, we are going to show you how to make an LED Roulette Circuit using 555 timer IC, before starting the tutorial let you know about what the roulette is, it’s a casino game named after the French word which means little wheel. As same, here we are making a wheel (or circle) shaped led blinker, using 555 timer IC placed in Astable mode, and IC 4017 which is decade counter… |
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Simple Audio Amplifier using 555 Timer IC 555 time IC is very powerful and versatile IC, it can be used in many forms. In this tutorial we are going to see how a 555 IC can be used as Audio Amplifier. A low power audio signal can be amplified using 555 Timer IC.
This circuit is divided into two parts: part one is Preamplifier circuit, which consist a BC547… |
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Laser Security Alarm Circuit Security is main concern for various buildings, houses and offices. There are a variety of security alarms available in market which uses various types of technology for intruder detection like infrared sensors, motion sensors, ultrasonic sensors, laser sensors, etc. Previously we have also built some security alarm circuits like this PIR sensor based motion detector and… |
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DIY Piano Piano is developed by connecting a 555 timer ASTABLE multivibrator with variable frequency to a speaker. Piano is a wonderful musical instrument and one can make a cheap one using 555 timer IC chip. This concept of piano is achieved by making the timer generate 5-15 different kind of sounds. The different sounds are generated through timer by allowing it to run as free… |
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Clap On Clap Off Switch A "Clap On Clap Off" switch is an interesting concept that could be used in home automation. It works as a switch which makes devices On and Off by making a clap sound. Although its name is “Clap switch”, but it can be turned ON by any sound of about same pitch of Clap sound. The main component of the circuit is the Electric Condenser Mic, which has been used… |
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IR Based Security Alarm IR based security alarm circuit can detect any movement and trigger the alarm. This circuit is very useful in homes, banks, shops, restricted areas where an alert alarm is needed on any movement. This circuit is based on IR sensor where an IR beam is continuously falling on a photodiode, and whenever this Infrared beam breaks, by any kind of movement, alarm is triggered… |
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H-Bridge Circuit H-bridge is the circuit in which voltage can be applied across the load, in either of the direction. These circuits are frequently used in robotics, especially for the DC motor. Voltage can be applied in either direction to rotate the DC motor forward or backward. DC motor further move the robot or any robotic system, forward or backward. … |
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LED Chaser Circuit You must have seen different kinds of decoration lighting patterns. In this LED chaser circuit, we have created an interesting LED blinking pattern by using a 555 timer IC and Counter IC CD 4017. Required Components CD 4017 Counter 555 Timer IC 150, 1K, 10K Resistors 10K Variable Resistor 10uf, 100nF capacitor… |
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Electronic Mosquito Repellent Circuit Various mosquito repellent solutions like coils, liquid vaporizers, and creams, all have possible adverse effects to health. Then there are electronic mosquito repellents available in market which are equally efficient and relatively safer. The concepts of these mosquito repellers are simple and we can build a simple mosquito repellent circuit at home easily by using 555… |
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Heart Shaped Serial LED Flasher In this tutorial we are going to build a Heart shaped serial LED flasher circuit using 555 timer IC and 4017 IC. It is an interesting DIY which you can build for yourself or gift someone special to you. Required Components 555 Timer IC Decade Counter IC 4017 Resistors - 220 Ohm, 1k and 10k Capacitor - 10µF… |
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Reaction Timer Game using IC 555 Reaction timer is a game to test how fast you reacts. This game which we have developed using 555 IC is for two players where first player starts the game by pressing start button. As soon as the START button is pressed, 7 segment display starts displaying 0 to 9 numbers in a high speed. Then other player stops the counting by pressing the STOP button. As the… |
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1 Minute Timer Circuit As the name suggest 555 timer is basically a “Timer”, which create an oscillating pulse. It means for some time output pin 3 is HIGH and for some time it remains LOW, that will create a oscillating output. We can use this property of 555 timer to create various timer circuits like 1 minute timer circuit, 5 minute timer circuit, 10 minute timer circuit, 15 minute timer… |
