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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!
High Speed PCB Design For Electromagnetic Compatibility (Part 1 of 5)
In the world of electronics goods, where margins are razor thin, manufacturers try to keep product cost low to maintain a competitive edge. In...
Speed Checker for Highways
While driving on highways, motorists should not exceed the maximum speed limit permitted for their vehicle. However, accidents keep occurring due to speed violations...
Long-range Burglar Alarm Using Laser Torch
Burglar alarm using laser torches, normally work in darkness only. But this long-range photoelectric alarm can work reliably in daytime also to warn you...
Application Of Ultra-Low-Power Converters In The IoT
It is predicted that there will soon be 25 billion permanently-connected sensors to implement the Internet of Things (IoT) in real time. But the...
0-50V Variable Power Supply Using LM317
Presented here is a 0-50V, 1A variable power supply that has been designed using positive-adjustable voltage regulator LM317 IC. This IC normally generates voltages...
Wireless Water Level Indicator Without MCU
A wired water-level indicator uses many wires, whose resistance increases as their length increases. A wireless water level indicator using microcontroller (MCU) is costly...
Arduino-Based FM Receiver
This project is an FM receiver circuit radio based on Philips TEA5767 digital radio-receiver module. The radio receiver uses I2C interface with Arduino UNO...
RF-based Dual mode Robot
Here is a dual-mode robot that can be operated manually using an RF-based remote control and can also move automatically avoiding all the obstacles....
PC Based DC Motor Speed Controller
This PC based DC motor speed controller circuit allows you to control the speed of a DC motor (in eight levels) from your PC’s...
How To Design Smart Water/Gas/Heat Meters?
Smart flow meters help improve the water and heat metering accuracy by an order of magnitude compared to traditional meters. Traditional mechanical flow meters...
Make Your Own USB Data Acquisition System
Presented here is a USB data acquisition system that can be used to interface six sensors and four digital-to-analogue channels. The acquired voltage levels...
Raspberry Pi Based SMS Server
Until recently, for sending an SMS we had to use third-party services from the Internet. We had to log on to a third-party server,...
Automatic USB-Controlled Power Switch
Almost all electronic gadgets now come with one or more USB ports. You can use the USB port as an automatic switch to control...
Door-Opening Alarm Using Hall Sensor
This simple door opening alarm using hall sensor produces sound when someone opens the door. The circuit can be installed at a workshop, office...
Wireless Baby Monitor Circuit
This wireless baby monitor circuit using FM is designed to operate at a frequency of 100MHz. Its range of transmission is more than 100...
Programmable Power Supply With TL431
TL431 and LM431 are relatively low-noise, stable and low-cost shunt regulators. These can be used to build all sorts of power supplies including programmable...
Light-Sensitive Fire Alarm
This light sensitive fire alarm circuit is extremely sensitive, low-cost and easy to assemble even by a beginner. It uses infrared photo transistor as...
Simple 12V, 1A SMPS
Most electronics enthusiasts require DC power supplies to operate various devices and accessories. The most popular and common supply is a 12V DC supply...