Electronic is fun to learn, especially if you can learn it by building your own circuits. To help you with that, Circuit Digest provides you with a list of popular Electronic circuits and Electronic projects with well illustrated circuit diagram and detailed explanation for a complete do-it-yourself experience. All projects are tested and verified with a working video for a hassle free learning experience. Whether you are an expert or beginner in electronics, we have something interesting for all of you. Below is our huge collection of 200+ free electronic circuits that you can build today.
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 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…
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…
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…
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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Passive Infrared Sensor (PIR) is very useful module, used to build many kinds of Security Alarm Systems and Motion Detectors. It is called passive because it receives infrared, not emits. Basically PIR sensor detects any change in heat, and whenever it detects any change, its output PIN becomes HIGH. They are also referred as Pyroelectric or IR motion sensors.
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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…
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…
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…
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…
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…
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-…
