Temperature controlled fan using AVR Microcontroller (ATMega16)

Introduction: You may have seen so many applications of temperature control and indicators using different micro-controllers, microprocessors or other control devices. But what is the actual use of these temperature regulators is presented here. It controls the fan speed continuously, as the temperature varies. It is not a simple ON-OFF type control that activates the … Read more

Frequency Measurement and Pulse Width Measurement using Microcontroller (AT89C51)

Frequency Measurement Pulse Width Measurement using Microcontroller and Circuit designers and developers need different measuring equipment, such as digital multimeter, CRO, DSO, frequency counter, logic analyzer, etc. to test their circuits. When designing any PWM oscillator or generator or have generated any waveform, it is necessary to measure either the frequency or the time period. … Read more

Light tracker using LDR, stepper motor and AVR microcontroller

Introduction: Electricity is the most necessary and important element of human life. We cannot imagine daily life without electricity. Electricity is generated using conventional (coal, diesel) and unconventional (water, wind, sunlight) energy sources. The latest and most recent trend is to generate electricity from solar energy. The solar panel (consisting of photovoltaic solar cells) converts … Read more

2 in 1 RPM and Frequency Counter

Frequency measurement is one of the main requirements for many applications. The most obvious the frequency measurement method is using CRO (or nowadays using DSO). But this instrument is not portable or available with all students or hobbyists at any time. It’s actually a lab tool and not the portable one. It is also more … Read more

Intelligent Train Engines

We know that the Indian rail network is the largest in South Asia and perhaps the most complex in the world. There are so many local trains, fast, fast fast, passenger, goods …. etc. and several multiple procedures. However the schedule is perfect, it cannot be retained. And that’s why the train accidents are more … Read more

Remote Temperature Monitoring System

The temperature regulator or monitoring system is one of the most requested systems in almost all processing and manufacturing industries. Here, the given application demonstrates a completely new type of temperature control and control system. This one monitors the temperature, displays it, sends wireless signal to the remote monitoring node and give this node a … Read more

Women Safety Belt

INTRODUCTION In today’s world, women safety has become a major issue as they can’t step out of their house at any given time due to physical/sexual abuse and a fear of violence. Even in the 21st century where the technology is rapidly growing and new gadgets were developed but still women and girls are facing … Read more


ABSTRACT Wall Follower is one of the biggest and one of the important idea of robotics. A Wall Following is an autonomous robot which detects the wall and decides what to do after it. It is designed to move automatically and follows the plot line. The robot uses  several  sensors to identify the wall thus … Read more

Electronic Code Lock Circuit Using 555 Timer IC

Digital code locks are very popular in electronics, where you have to enter a certain “code” to open Lock. This type of Lock requires a Microcontroller to compare the entered code with the predefined code to open the Lock. We have already built these types of digital locks using Arduino, using Raspberry PI and using … Read more

Wirless energy meter reading using GSM & Arduino

ABSTRACT The development of a ” Wirless Energy Meter Reading using GSM & Arduino system”is presented in this paper. This system consists of GSM digital power meter installed in every consumer unit. A GSM modem is connected to the energy meter. Each modem will be having its own SIM. The SIM card used is implemented … Read more