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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!
Midget Vibration Detector
This article describes a low-cost sensitive midget vibration detector that can interface directly with any microcontroller. The entire circuit operates off a single 5...
Arduino Ping Pong Game
Ping Pong was the first ever video game that reached mass market. For the first time in history, the concept of a “video game”...
Web Server using Raspberry Pi 2
Raspberry Pi is a small credit-card sized computer capable of performing various functionalities. It is heavily used in surveillance systems, military applications, etc. Several...
High Fidelity FM Transmitter
FM broadcasting is radio broadcasting using frequency modulation technology. In order to attain high-fidelity broadcast of music and speech, all audio frequencies up to...
ATM Machine using RFID and GSM
The main objective is to design a MODEL ATM machine using RFID and GSM technologies. Here we design a model of how really ATM...
PC Based Stepper Motor Controller
This PC based stepper motor controller is perhaps the cheapest, smallest and simplest. A pair of H-bridges with a software program written in ‘C++’...
Magnet Operated Toggle Switch
When the author decided to develop a magnet operated toggle switch, what he had had in mind was an ‘unorthodox’ design that was as...
Heat-Blocking Features Imaged by Ultrasound
When power is applied, an integrated circuit begins to heat up within its package. It shortly reaches the operating temperature range for which it...
16-Way Clap Operated Switch
Control your home appliances with this clap operated switch, without getting out of your bed. You just have to clap in the vicinity of...
Continuity Tester With A Chirping Sound
Today, there’s a party at your home. And you are busy detecting faults in the decorative lights hanging over the boundaries of your house....
Shadow Alarm: Light Sensitive Circuit
This light sensitive alarm circuit sounds an alarm whenever a shadow falls on it. So it can be used at night by shopkeepers to...
Multicell Charger
Using this multicell charger, you can safely charge up to two pieces of Ni-Cd cells or Ni-MH cells. The circuit is compact, inexpensive and...
Bicycle Guard
This anti-theft device for bicycles is inexpensive and can be constructed easily using a few components.
At the heart of the circuit is a wheel...
Solar Powered Pedestal Lighting System
This solar-powered pedestal lighting system uses power LEDs for lighting. Solar energy is first converted into DC electricity by a solar photovoltaic cell and used to charge a storage battery.
Voltage Based Controller For Switches
Here’s a simple voltage based controller circuit for controlling four switches from a distance through just a pair of wires.
Voltage based controller circuit
In the...
3V PC Adaptor
Plug this circuit into the available USB output port of your PC to get 50mA, 3V DC. So it can be used to recharge, for instance, two NiCd cells (1.2Vx2) of a portable music player system.
Low-Cost Battery Charger
Here is a very simple and low-cost charger for 12V, 7Ah lead-acid batteries. It can also be used for powering automobile engines and emergency lighting systems.
Clock Controlled Timer Circuit
With this simple clock controlled timer, you will never again miss your favourite TV or radio programme. The TV or radio will switch on...