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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!

Efficient LED Blinking for Embedded Systems

Smart hardware design can simplify the embedded software and make it more reliable. Designers use blinking LED signals to indicate different status and for...

SCR-Controlled EHT Power Supply

Presented here is an extra-high-tension (EHT) power supply capable of delivering variable DC voltage from about 100 V to 5 kV with load current...

Transistor Polarity Checker

Presented here is a simple circuit that will help you figure out whether a transistor is npn or pnp type. If the transistor under...

Demo Circuit for Over-Voltage Protection

Over-voltage protection circuits are used to protect voltage-sensitive loads. Voltage transients may occur due to a number of reasons such as transformer switching, load...

Propeller Message Display with Temperature Indicator

Here we describe a microcontroller-based propeller display that displays any message sent to it via hyper-terminal of a personal computer. Moreover, a temperature sensing...

Dual Motor Control for Robots

Presented here is a simple circuit that can drive two motors for a small robot, allowing the robot to negotiate an obstacle course. Two...

Stereo audio Distribution Buffer for headphones

Most audio signal sources have only one stereo output, which means they can drive only a single pair of headphones with a resistance of...

555 Timer Design Using MATLAB

Presented here is a Matlab program to design an astable multivibrator of desired frequency and duty cycle using a 555 timer. The aesthetic graphical...

Wireless PA for Classrooms

In large classrooms, many a times the teacher’s voice is not audible to students in the back rows. So the teacher have to literally...

Stop Clock With Battery Backup

Stop clock is widely used in various fields to measure the timing of events. Science laboratory experiments, such as measurement of discharge rate of...

EEPROM Interface for Beginners

Electronic systems today incorporate a number of peripheral ICs that have to communicate with each other and the outside world. To maximise hardware efficiency...

How to Ensure Product Reliability

Electronic devices containing delicate components can be easily damaged, unless they are rugged. A truly durable electronic device or gadget is one that substantially...

Designing A Cost-Effective and Versatile Home Area Network Device

The sky-rocketing cost of energy production has necessitated a more efficientenergy consumption process. This has brought revolution in electrical equipment manufacturing and energy metering...

Ensuring LEDs’ Long Life

Long before Fukushima, energy saving was a watchword. Efficient use of energy reduces the number of power stations. The conventional filamentlamps are problematic because...

Semiconductor Relay for Automotive Applications

Semiconductor relays provide the same function as electromechanical relays but have no moving parts, which increases their long-term reliability. These relays provide an array...

Virtual Paper Keyboard Using OpenCV in Visual Studio

The project presented here uses a paper keyboard instead of an electronic keyboard as the input device. The paper keyboard, along with a webcam,...

Part 1 of 3: USING AVR MICROCONTROLLERS FOR PROJECTS

The AVR 8535 microcontroller and its new version ATmega8535 are versatile, high-performance but low-cost chips. This article series covers typical applications of this processor...

Electronic Circuit Prototyping More Than Just An Artefact

Certain doubts in the design of an electronic product can be cleared by building and studying a prototype first. Here we discuss the challenges...
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