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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!
Cable Tester
Have you ever wondered if a particular cable is delivering mains power supply to your device or not? Here is a solution that helps...
Eqntott: Truth Table Generator from Boolean Equations
This tutorial demonstrates the use of eqntott software with some code examples
Shakthi Kannan
eqntott (short for ‘equation to truth table’) is a software tool that...
Cupboard Light
Here is a simple circuit that can temporarily illuminate your cupboard or other such usually dark places where mains connection is either not possible...
Implementation of Fast Fourier Transform Using C++
Here is a program to compute fast Fourier transform (FFT) output using C++.
FFTs are of great importance to a wide variety of applications including...
Simple Antenna Preamplifier for AM Radios
AM radios are still used for capturing transmissions from long distances (DX reception). But AM radios normally require long (10-30m) outdoor antennae. That is...
Power Measurement and Control Using Programmable Logic
In a complex system design, power consumption of hardware components is a very important performance metric because of the resulting thermal and reliability concerns....
Part 2 of 3: Using AVR Microcontroller for Projects
In the first part of this article, we had described the main features of the AVR microcontroller and the hardware/software required for an AT-PROG...
How to Design Medical Devices for Rural India
Medical devices intended for use in rural India have certain differences compared to those used almost everywhere else. In this article, we consider the...
Soldering Iron Tip preserver
Although 60/40 solders melt at about 200°C, the tip temperature of a soldering iron should be about 370°C. This is necessary to make a...
Standalone GPS Receiver with LCD Display
This AVR microcontroller-based global positioning system (GPS) receiver can be used to find the exact location of a place and know its standard time....
Put your own Smiley on GLCD
The regular 16×2 LCD can display characters of only certain dimensions. A graphical LCD (GLCD), on the other hand, can display custom graphics. GLCDs...
Remote Controlled Wireless Doorbell
This circuit lets you wirelessly control an appliance from a remote place by using a wireless doorbell. The appliance is triggered by the signal...
FM Bug
This FM bug transmitter circuit will let you spy on people. The transmitter can be placed in the desired room and the conversation heard...
Calling Bell Using an Intercom
Here is a simple calling bell circuit that can be used in small offices to call the office boy using an existing intercom system....
Simple Stereo Level Indicator
Usually, low-priced home stereo power amplifiers don’t have output level indicators. An output power level indicator can be added to each channel of these...
Circuit Design Calculator Using ‘C++’
While designing electronic circuits, component values are calculated using formulae from the circuit’s theory. These calculations waste a lot of time. This circuit design...
JavaScript Based Man-Demon Puzzle Simulator
Man-demon puzzle is like a classic river-crossing puzzle. The missionaries-cannibals—one of the river-crossing puzzles—is a well-known game problem in artificial intelligence, where it is...
Rainbow Clock
Here is a simple circuit using different colour LEDs that makes your clock glow in different colours of rainbow. The clock’s dial (shown in...