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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!
Water-level Controller
In most houses, water is first stored in an underground tank (UGT) and from there it is pumped up to the overhead tank (OHT)...
3W/6W audio amplifier using TDA2003
This is a simple audio-frequency (AF) amplifier using the popular audio amplifier IC TDA2003. The IC comes in a 5-pin TO-220B package.
Audio amplifier circuit...
Duck Hunt Game Using Arduino And Python
Duck hunt game is a shooting game based on pygame, using Arduino and an accelerometer sensor. In this project a gun pointer is made...
Sunset Lamp
LDR-based automatic lights flicker due to the change in light intensity at dawn and dusk. So compact fluorescent lamps (CFLs) are unsuitable in such...
Automatic School Bell
Consider that a school has a total of eight periods with a lunch break after the fourth period. Each period is 45 minutes long,...
Water Level Controller-Cum-Motor Protector
Many a time we forget to switch off the motor pushing water into the overhead tank (OHT) in our households. As a result, water...
Smart Emergency Light
An emergency light can come in handy at all sorts of time, especially when there's a power outage. Now you need not fear dark...
Long Range FM Transmitter
Several circuits for constructing FM transmitter have been published in EFY. The power output of most of these circuits were very low because no...
PC Based Timer
Timers are very useful both for industrial applications and household appliances. Here is a PC based timer that can be used for controlling the...
Numeric Water Level Indicator
Most water level indicators for water tanks are based on the number of LEDs that glow to indicate the corresponding level of water in...
Secured Room Access System
Security is a prime concern in our day-to-day life. And access control system forms a vital link in a security chain. The microcontroller based...
Cellphone Operated Land Rover
Conventionally, wireless-controlled robots use RF circuits,which have the drawbacks of limited working range, limited frequency range and limited control. Use of a mobile phone...
Pressure Sensors on Railway Tracks
Every year, thousands of animals die after being hit by trains. Animals on train tracks are dangerous for both animals and the train as...
Suggestions for Replacing Film Capacitors with Multi-Layer Ceramic Capacitors
As the capacity of multi-layer ceramic capacitors increases, the number of cases in which multi-layer ceramic capacitors are being used in areas that were...
Simple Event Counter
Microcontroller based miniscule event counter presented here is based on the inexpensive Digispark Attiny development board. One advantage of this design is that any...
FM Booster
An antenna amplifier boosts a radio signal considerably for devices that receive radio waves. Many devices have an RF amplifier stage in their circuitry, that...
Door Guard
This door guard uses operational amplifier µA741 and a light-dependent resistor (LDR). Operational amplifier µA741 is used as a sensitive voltage comparator. Preset VR1...
Electronic Bicycle Lock
The electronic bicycle lock described here is a worthwhile alternative for bicycle owners who want to make their bicycles 'intelligent' at reasonable cost. One...