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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!
Arduino Based Programmable Digital Data Display
LCDs are widely used in applications like token-display machines in smalls and supermarkets, order number displays in restaurants and café, and so on. The...
SL100 Transistor Pinout | SL100 Transistor Datasheet
Transistors are the basic building blocks of integrated circuits (IC). Every electronic gadget you can possibly imagine today uses transistors. The development started off...
7×5 LED Matrix Using Arduino
Presented here is a simple 7x5 LED matrix circuit vriven by Arduino Uno (Arduino LED). It can be used to display your name or...
Four Steps To Protecting Wearables With Electrostatic Discharge (ESD) Diodes
How best practices in circuit protection and board layout ensure long-term safety and reliability
From smart glasses to fitness-monitoring wristbands, wearable technology has become one...
Simplify Solid-State Lighting Dimmer Design
Solid-state lighting is rapidly becoming the most popular lighting option for a broad range of applications. With the U.S. government's mandate to save energy,...
Make Your Own Air Quality Monitoring Device!
Air pollution and concern about air quality is not something new. Complaints were recorded even in the 13th century when coal was first used...
Developing Manufacturing Test for Electronic Products
Building a Manufacturing Test for the system which ensures quality and performance of the system is very critical and the pivotal task for every...
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...