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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!
Skin Resistance Meter
Human skin offers some resistance to current and voltage. This resistance changes with the emotional state of the body. The skin resistance meter circuit...
Remote Operated Switch
Generally, a bedside master switch is used to switch on lamps both indoors and outdoors when there is a threat of intruder. This remote...
Fully Automatic Emergency Light
This is a circuit for an emergency light that automatically turns on when the supply is gone and turns off when supply resumes. It is rechargeable and stops charging the battery when the battery is full.
PC Timer
Primarily intended for installation into a desktop PC, this versatile PC timer with adjustable time output provides controlled ‘on’ time for PC peripherals like...
Automated Alarm Circuit
Two automated alarm circuits are presented here. One produces bird-chirping sound and the other British police siren tone. Fig.1 shows the circuit of the...
Multipurpose Power Pulser
The idea behind this multipurpose power pulser is very simple. As shown in the circuit (Fig. 1), it uses a low-frequency oscillator to drive...
Midnight Security Light
Most thefts happen after midnight hours when people enter the second phase of sleep called 'paradoxical' sleep. Here is an energy-saving night security light...
Anti-Sleep Alarm for Students
This anti sleep alarm circuit saves both time and electricity for students. It helps to prevent them from dozing off while studying, by sounding...
Password-Protected Bluetooth Remote Control
This password protected bluetooth based remote control operating at 2.4GHz frequency can be used to control robots, home appliances, machines, etc. Here we have...
Cost vs Power in Lighting and Some Suitable Solutions
Ever wondered about the size of a salt grain? A single salt grain measures about three mil, which is a thousandth of an inch....
Simple 8-Bit Computer for Learning
This project helps you build a 8-Bit computer while also providing an insight into the working of an MPU & its construction mechanism.
Computers take...
Efficient Egg Candler
Candling eggs, while they are incubating, is the proven method to test them for fertility. Often, egg candling is done using a light source...
Automatic Railway Gate for Unmanned Railway Crossing
The aim of this project is to save lives of people who are crossing unmanned railway crossings; by providing an automatic railway gate solution....
Micro-Solder Pot
To make a great solder joint, component preparation is a must. It is very important to clean component leads, wires and contact surfaces prior...
Industrial Transportation: Powering After-Market Electronics and Infrastructure
Industrial transportation electronics is a broad category. It includes after-market additions for automation and entertainment in cars, trucks, trains, planes, and ships. It also...
MQTT – A Practical Guide to IOT Protocol
MQTT is very useful for connections with remote client where a small code footprint is needed, or internet bandwidth is very low. For example,...
DC Motor Starter Using Arduino Uno Board
Motor starter reduces the load, torque and current surge of a motor during startup. On starting, the motor takes more than five times the...
Demystifying Thermopile Sensors
Thermopile temperature sensors offer the advantage of non-contact temperature measurement, which has made them more popular than traditional contact-type temperature sensors. These sensors use...