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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!
DC-AC SSR Switch for Microcontroller/Robotic Projects
SSR stands for Solid State Relay. SSRs are not very different in operation from traditional electromagnetic relays that have movable contacts. An electromagnetic relay...
Arduino-based Line Frequency Meter Based on Reciprocal Counting
Precise measurement of line signal frequency is very important in many applications, especially in the management of power grid systems. Tasks like calibration of...
Surveillance Camera Using RaspiCam And Android App
This project describes how to build a surveillance camera based on Raspberry Pi (Raspi) that records HD video only when something moves in the...
Mini Candle Light Using Old Mobile Phone Battery
According to the three Rs—reuse, reduce and recycle—we must save our planet from e-waste. Sometimes we have a dead mobile phone whose battery is...
Configurable DC-to-DC Converter Module Using Three ICs
Most kits with embedded microcontrollers (MCUs) operate off a single power supply (VCC) source like 5V or 3.3V. But for some experiments you need...
Make Your Controllers For Any Game Using Arduino: DIY
Nowadays, we have lots of game controllers that are improving the gaming experience over the years. There are number of factors responsible for a game...
Weight Machine
Eight years back I purchased a small bathroom scale from @Home ,Mumbai and it cost me a good amount of money then. It's a...
Wireless Control Of Servo Motor
I made my first robot when I was in college and always thought to make totally wireless. So the same I thought about making...
HV Generator for Microcontroller Projects
To drive small neon lamps or similar devices in your microcontroller/robotic projects, you need a high-voltage dc power supply for consistent and fast performance....
Simple Low-Cost And Versatile Battery Charger
Presented here is a versatile battery charger circuit to charge batteries ranging from 6V through 48V. At home, garage or laboratory, you may have...
Variable Power Supply with Digital Control
The most frequently used device in electronic workshops and laboratories is a universal power supply that provides a variable, fluctuation-free output. Here we present...
Arduino Based Windows PC Volume Remote Control
Presented here is a project that turns your Arduino into a remote control. Infrared (IR) remotes have been very prominent since 1980’s. In today’s...
Get started with NOT Gate IC | 7400 Series Tutorials
NOT Gate Logic Symbol and Boolean ExpressionTruth Table for NOT gate ICRecommended Operating Conditions of NOT Gate IC 7404Pin-Out Diagram of 7404 NOT Gate IC7400...
Temperature Control & Indicator System
Here is an easy-to-construct temperature indicator-cum-controller that can be interfaced with a heater’s coil to maintain the ambient room temperature. The temperature control system is...
How Startups Can Hasten Design Without Burning Through Funds
Developing a project from scratch is every designer’s dream. Unfortunately, most ideas are not designed for manufacturing from the beginning. Often, the changes required...
Mobile Sniffer
This mobile sniffer circuit can detect the use of a GSM mobile in mobile-phone-restricted areas such as examination halls and other ‘do not disturb’...
USB Interface Using Python Software
This is a simple transistor’s output characteristic curve-tracer program through PIC microcontroller & USB interface using Python programming language. Output characteristic curve of a...
TINY DEW SENSOR
Dew (condensed moisture) adversely affects the normal performance of sensitive electronic devices. A low-cost circuit for a dew sensor described here can be used...