555 timer

Ding Dong Sound Generator Door Bell Circuit using 555 Timer Ding Dong Sound Generator Door Bell Circuit using 555 Timer

Door Bells are available in lot of variations in market which generate different sounds but the most common sound of a Door…

Fridge Door Alarm Circuit using 555 and LDR Fridge Door Alarm Circuit using 555 and LDR

The name of the circuit itself infers the application. This circuit triggers the alarm if the door of Fridge is left open for…

School/College Quiz Buzzer Circuit using 555 Timer IC School/College Quiz Buzzer Circuit using 555 Timer IC

Quiz is an important event in any school/College institution to test the knowledge of the participants. In order to increase…

Simple Time Delay Circuit using 555 Timer Simple Time Delay Circuit using 555 Timer

In this project we are going to design a Simple Time Delay Circuit Using 555 Timer IC. This circuit consists of 2 switches one…

Panic Alarm Circuit using 555 Timer IC Panic Alarm Button Circuit using 555 Timer IC

A Panic Alarm Circuit is used to send an emergency signal immediately to the people in nearby location to call for help or to…

555 Timer PWM Generator Circuit Generate Pulse Width Modulation (PWM) Signal using 555 Timer IC

PWM (Pulse Width Modulation) is a important feature of today’s every microcontroller due to its requirement for controlling…

Bike/Car Turning Signal Indicator Circuit using 555 Timer IC Bike/Car Turning Signal Indicator Circuit using 555 Timer IC

In our daily life we see vehicles turning indicators when they turn left or right. It looks like Simple LED Blinking. But it's…

Simple Digital Voltmeter Circuit using ICL7107 Simple Digital Voltmeter Circuit with PCB using ICL7107

In this project we are going to build a Digital Voltmeter without using any microcontroller. Here we are using a very popular…

3X3X3 LED Cube using 555 Timer and CD4020 IC 3X3X3 LED Cube using 555 Timer and CD4020 IC

We have previously built 3x3x3 LED Cube using Arduino and Raspberry Pi. 3x3x3 LED Cube is generally build using some…

555 Timer Based Electronic Code Lock Circuit 555 Timer Based Electronic Code Lock Circuit

Digital Code Locks are very popular in Electronics, where you need to enter a particular ‘Code’ to open the Lock. This type of…