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Engineering Projects For You
Free electronics projects, circuit diagrams and software codes available for students and hobbyists. Complete instructions on DIY electronic devices also available. These projects have been tested by EFY and are available with source codes. These are helpful with understanding concepts of electronics including basic components. The projects are designed to be helpful for engineering students and professionals building their own designs and circuits. The projects are also compiled from time to time to provide a single destination for project junkies. Let us know how you feel about the content and any thing you would like us to cover in the future. We hope you enjoy the content on this page!
Semiconductor Relay for Automotive Applications
Semiconductor relays provide the same function as electromechanical relays but have no moving parts, which increases their long-term reliability. These relays provide an array...
Virtual Paper Keyboard Using OpenCV in Visual Studio
The project presented here uses a paper keyboard instead of an electronic keyboard as the input device. The paper keyboard, along with a webcam,...
Part 1 of 3: USING AVR MICROCONTROLLERS FOR PROJECTS
The AVR 8535 microcontroller and its new version ATmega8535 are versatile, high-performance but low-cost chips. This article series covers typical applications of this processor...
Electronic Circuit Prototyping More Than Just An Artefact
Certain doubts in the design of an electronic product can be cleared by building and studying a prototype first. Here we discuss the challenges...
AC-Powered Led Lamps Without rectifiers
Usually, LED lamps require rectifier when connected to the AC mains power supply. Electrical isolation of the LED lamps from the mains is also...
Bedwetting Alarm
Bedwetting is one of the most common childhood problems that can have a significant impact on a child’s health if left unattended. During the...
Implementation of FIR Filters Using Rectangular Window
Filters are an important part of electronic circuits today. Whether it is the analogue or digital world, the role of filters is very important....
Dummy Load for Amplifier Testing
If you want to test an audio amplifier, here is a compact fan-cooled dummy load that can be used to provide any of the...
How Haptics Can Help Your Project
Fundamentally, haptics is any form of non-verbal communication involving touch. Shaking hands when you greet someone is a haptic custom originated from western countries....
JavaScript-based Multiformat Sudoku Puzzle Solver
Sudoku is a mathematical-cum-logical puzzle where every digit should come uniquely in every row and column without repetition. We generally find Sudoku puzzles in...
Designing Cutting-Edge Wearable Medical Devices
FEBRUARY 2012: As healthcare moves out of hospitals and becomes more integrated with peoples’ lives, medical devices are evolving from portable equipment to wearable...
How SoMs Take The Effort Out of Designing
“System-on-module is an extension of the concept of system-on-chip which lies between a full-up computer and a microcontroller in nature” ——Texas Instruments
“We wanted to...
All About Transferring Power Wirelessly
One of the biggest challenges before consumer electronics makers today is to increase the battery life of their devices on a single charge. As...
Multifunction Power Supply
Many embedded systems these days need +5V power supply with some special functions such as power-fail detection, zero-crossing signals for mains power supply and...
Wireless Sensor Network Simulation Using NetSim
IEEE 802.15.4-based wireless sensor networks (WSNs) have witnessed explosive growth in the recent past because of their position-independent sensing capabilities even in toxic and...
GSM-based Dot-Matrix Display
Nowadays, LED message displays are becoming very popular for transmitting information to large groups of people quickly. These can be used indoors or outdoors,...
Challenges In Designing with International Certifications in Mind
Radiative immunity test. The Raspberry Pi is at the front right corner of the table. The video camera at the left is for monitoring...
Guide on how to select pressure regulators for fuel systems
A pressure regulator is a valve that automatically cuts off the flow of a liquid or gas at a certain pressure. Regulators are used...