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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!
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...
Electronic Watch Dog
Here’s an electronic watch dog for your house that sounds to inform you that somebody is at the gate. The circuit comprises a transmitter...
Dual-Channel Active AC Analog Probe
Presented here is a low-cost, dual-channel, active AC analog probe. It is suitable for oscilloscopes, multimeters and other analogue measurement equipment.
When experimenting with AM...
IoT Based Notification System Using Android App
Presented here is a smart notification system for a door sensor, motion detector, fire alarm and doorbell using Raspberry Pi (RPi) and Pushover app....
IP Cores For FPGA Designs
Intellectual property (IP) cores are standalone modules that can be used in any field programmable gate array (FPGA). These are developed using HDL languages...
Electrolysis-Free Water Level Alarm
In most water level monitors and alarms, corrosion of the probes makes the systems unusable in a few months. This water level alarm uses...
Top 20 RFID Project Ideas
Radio-Frequency Identification (RFID) is a technology that uses radio-frequency electromagnetic fields to transfer information from a tag to RFID reader for identification purposes. The...
Laser Communication System
This laser communication system transmits sound or music signals through a laser beam. The intensity of the laser beam changes with the amplitude of...