555 timer circuits
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Clap Switch Clap switch is an interesting hobby circuit that turns on the lights with a clap sound. Although its name is “Clap switch”, it can be turned ON by any sound of approximately the same pitch as a clap. The main component of this clap switch circuit is the Electric Condenser Mic, which has been used as a sound sensor. The Condenser Mic basically converts sound energy into… |
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Rain Alarm Rain alarm is an application which detects the rain water and blows alarm. They are useful devices and play an important role in various industries such as automobile, irrigation, and wireless communication. Desiging a rain alarm system is quite simple and we have designed here a demo rain alarm project with the help of 555 Timer IC. … |
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Fire Alarm Circuit using Thermistor Fire alarms are a prime necessity in modern buildings and architecture, especially in banks, data centres, and gas stations. They detect fire in the ambience at a very early stage by sensing smoke or heat and raise an alarm, which warns people and gives them sufficient time to take preventive measures. It not only prevents big losses caused by deadly fire but sometimes… |
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Negative Voltage Generator In electronics applications sometimes we need negative voltage. However getting a negative supply source is not a reliable option, when it is needed for low current applications. For many electronic circuits which require low power, we cannot go for a negative voltage power source. For the applications of reference or low power purposes one can go for circuits… |
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Door Bell using IC 555 Doorbell is a very common and useful device used in every household. Among electronics students and hobbyists, doorbell circuit project is quite popular. So in this tutorial we are going to build a doorbell with 555 timer IC. The main feature of this doorbell is that we can control the time duration for which it keeps ringing upon pressing the switch. Also we… |
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Flashing Police Lights Circuit In this project we are going to design a circuit, to make a flashing light similar to that on a police car. This police light circuit is designed by 555 Timer IC and a decade counter IC. The timer here generates pulses which are fed to the 10-stage decade counter, the output of counter is so arranged to get a flashy lights as a police car. … |
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Servo Motor Tester Circuit Servo motors are basically rotary actuators that enable precise control of angular position, acceleration and velocity in various embedded system applications. Commonly having a rotation limit of 90o to 180o, servo motors are DC motors equipped with servo mechanism to sense and control angular position. They are used where there is a need for accurate shaft movement or… |
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Simple Fading LED Light You should have seen LEDs glowing and fading in a LED Strip lights, used for decoration in festivals and functions. They look beautiful, and give a different look. This fading LEDs circuit can be created using numerous methods like using microcontroller, ICs etc. But how can we forget our Evergreen IC, 555 Timer IC, yes we can create a fading LED using 555… |
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Four Way Traffic Lights Circuit using 555 Timer IC In this traffic light project we are going to design a circuit, to control traffic lights on a four-way signal. This circuit is designed by 555 Timer IC and a decade counter. The timer generates pulses and these pulses are fed to the ten stage decade counter. The ten stage DECADE COUNTER have a memory of TEN. It can count up to ten… |
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TV Remote Control Jammer Circuit TV remote control is a commonly used device in our everyday life. Would you like to surprise your family members or friends by making this fun circuit namely "TV remote jammer circuit"? Yes you can use this circuit to stop the working of your TV remote and nobody would have a clue about why that stopped working. This project we have designed is a simple… |
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Simple Continuity Tester Circuit using 555 Timer IC In electronics and electrical systems, faults are very common. The most commonly appearing fault is due to discontinued connection or open circuit. To rectify such kind of faults, one could go through all the lines to identify the fault itself. Though, this method fault search is generally replaced by continuity testing equipment. There are many ways of open circuit… |
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One Bit Memory Cell All the embedded systems have memory to store data. These memory are made up of flip-flops, these flip-flops store the data in the form of bits. Each flip flop is can store one bit. So for eight flip-flops we will have 8 bit memory. This memory is used to store programs or to access the program. There are different type of flip flop here we are going o talk about SR flip-… |
