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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!
Sixth Order Butterworth Low Pass Filter
Low-pass filters are widely used in the audio domain. Their most important application is in communication receivers and communication audio circuitry. These filters, when...
Smart Laptop Docking Station
You can easily convert your ordinary docking station into a smart electronic laptop docking station with an anti-theft alarm. The circuit presented here can...
Multi-utility flashlight
This multi-utility flashlight consists of three sections: a flasher, a sound-to-light display and a white LED-based flashlight.
Multi-utility flashlight circuit
The flasher circuit is built around...
White LED Light Probe for Inspection
This white LED light probe circuit is useful for inspecting narrow spaces like the inside of the CPUs, monitors, PCB modules and other electronic...
Digital Night Vision Goggle
At night, on highways, the high-intensity light from the headlight of heavy vehicles blinds oncoming light vehicle drivers (bike riders and car drivers) for...
Wireless Extender For IR Remote Controls
Using this system, you can control your IR-remote-controlled home appliances like DVD player and air-conditioner from another room without the hassle of running extra cables between the two rooms.
Water Pump Controller
A water pump controller senses the level of water in a tank and drives the water pump. The circuit described here is built around...
Clock Tick-Tock Sound Generator & LED Pendulum
Wooden-case, battery-operated wall clocks with pendulums are available in the market. Some even have chimes. What is missing is the tick-tock sound of old...
Photo Counter
You can use this photo counter gadget to detect whether somebody opened your cupboard or drawer in your absence. The gadget is small and...
Touch Sensitive Alarm
Security has been a major concern for people for long. Any personal belonging kept out of personal reach is prone to attack and sometimes,...
Emergency Photo Lamp
This emergency photo lamp can be powered either by a rechargeable battery (like 3.6V Ni-Cd) or a non-rechargeable battery (3.0V CR2032). The white LED...
Making PCBs at Home Photographically (Part 1 of 2)
Here is a comprehensive guide to making your own PCBs at home using materials that are readily available in shops and online stores. While it addresses single-sided PCBs, it can be extended to create double-sided PCBs as well.
Single-Wire 4×4 Matrix Keypad Using AVR
This tutorial demonstrates a different way of interfacing a 4x4 matrix keypad with ATmega32 AVR microcontroller. Keypad is one of the most important input...
How to Play With Light Using LDR
In electronics, there are many ways to play with light the way you dream. If you are looking for an inexpensive solution, regular light-dependent...
Pmods – How To Get Started?
Here's a beginner's guide showcasing Pmod compatibility with the popular Arduino Uno platform. We will use a sample project - Pmod NAV - described...
Make Your Own Joystick for RF Controlled Robot
In the DPDT (double pole double throw) based joystick or the RF transmitter module switch based joystick, you must press two buttons simultaneously for...
Triple Power Supply From USB
Nowadays, most portable electronic gadgets are powered by USB adaptors. These adaptors have 5V, 1A to 5V, 2.1A output, which is enough to power...
Ruggedise the Hardware: Increase Its Life
McLaren-Honda, manufacturer of premium electric racing cars, recently started using silicon-carbide (SiC) power devices in inverters and on-board chargers, which increased their efficiency by...