In this DIY Project, I will show you how to build a simple Lead Acid Battery Charger Circuit using easily available components. This circuit can be used to charge Rechargeable 12V Lead Acid Batteries with a rating in the range of 1Ah to 7Ah. Introduction Lead Acid Batteries are one of the oldest rechargeable batteries […]
Interfacing DC Motor with 8051 Microcontroller
In this project, we will learn about L293D and L298N Motor Drivers and also about Interfacing DC Motor with 8051 Microcontroller with the help of both L293D and L298N. When we talk about controlling the robot, the first thing comes into the mind is controlling DC motors. Interfacing DC motor to the microcontroller is very […]
Mobile Controlled Home Appliances without Microcontroller
In this project, I will show you how to design a simple circuit called Mobile Controlled Home Appliances without Microcontroller. That’s right. Using this circuit, you can control your home appliances without any microcontroller and programming. Introduction Sometimes, unfortunately, we may forget to switch off the appliances like fans and lights while going outside and […]
Electronic Eye Controlled Security System
In this project, we will see a simple Home Security application called Electronic Eye Controlled Security System using LDR as the main sensor and a few other components. Introduction Electronic eye is also called magic eye. As the automation is an emerging technology these days, just imagine a door bell that automatically rings when a […]
Automatic Street Light Controller Circuit Using Relay and LDR
Did you ever think that how the street lights automatically turn ON in the night and turn OFF automatically at morning? Is there any person who comes to ON/OFF these lights? There are several ways to turn on the street lights but the following circuit describes an Automatic Street Light Controller Circuit that uses LDR and […]
Mobile Jammer Circuit
In the earlier post, we have studied about Simple FM Radio Jammer Circuit and its applications. Now, let us learn about one more interesting concept i.e. Cell Phone or Mobile Phone Jammer Circuit. Introduction A Mobile Jammer Circuit or a Cell Phone Jammer Circuit is an instrument or device that can prevent the reception of […]
Cell Phone Detector Circuit
The most common electronic equipment used now-a-days is Cell Phone or Mobile Phone. With advancement in communication technology, the requirement of cell phones has increased dramatically. A cell phone typically transmits and receives signals in the frequency range of 0.9 to 3GHz. This article provides a simple circuit to detect the presence of an activated […]
Clap Switch Circuit for Devices using 555 and 4017
We have already seen the circuit diagram, working and applications of 9 way Clap Switch Circuit. Now, we are going to deal another circuit named clap switch circuit for devices. I will present two circuits for clap switches, both of these circuits will be based on 555 IC and 4017 IC. Using these circuits, you […]
Variable Voltage Power Supply from Fixed Voltage Regulator
Introduction In this project, I will show you how to design a Variable Voltage Power Supply from Fixed Voltage Regulator like 7805 IC. 78XX and 79XX are the two series of three pin voltage regulator available in the market. 78XX series of the voltage regulator is for the positive voltage supply i.e. if you need a […]
UP/DOWN Fading LED Lights
Introduction In this LED based project, I will show you how to design an Up Down Fading LED Circuit using very simple hardware. Nowadays, the usage of LED lights is increasing rapidly because of their reduced cost and long durability (of course their low power consumption). Generally, you can see various implementations like Automobile DRLs (Daytime […]