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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!
Design: How to Improve Power Conversion Efficiency of Inverters
Inverters convert DC electricity from sources like solar panels, batteries and fuel cells into AC electricity. Their power-handling capacities like input voltage, output voltage...
R-, G-, B- Histogram Extraction of a True Colour Image (JPEG) Using MATLAB
The images in JPEG format are true colour images with 24-bit colour resolution. A 24-bit colour image is the combination of R-, G- and...
Automatic Bike Turning Indicator
The automatic bike turning signal system based on a microcontroller (MCU) available in the market is expensive and difficult to program. Here is a...
DC Power Meter for 0-55V 20A Work Bench Power Supply
This project describes how to make a low-cost DC power meter that can be used for displaying Voltage, current, power and the running time...
IoT Home Automation Using ESP-32 with Videos (Hindi & English)
Back in earlier days, when the word Internet of Things (IoT) was not a sound bite, developers of this field used various Wi-Fi shields...
Temperature Monitoring on Smartphone
This article describes a temperature monitoring system on an Android smartphone. Temperature is sensed by a temperature sensor installed in the circuit and is...
Wireless Security System Using PIR Sensors
This project demonstrates a wireless security system in which four pyroelectric infrared (PIR) motion sensors are placed in four sides—front, back, left and right—of...
Virtual Telepresence Robot Using Raspberry Pi
This robot with a camera is placed in a remote location to capture the environment in visual form using Raspberry Pi (RPi). The captured...
Doorbell with Security Feature
This doorbell Security system works such that when someone presses your calling bell switch during the night, not only the bell rings but the...
Audio Compression Using Wavelets In MATLAB
Audio frequencies range from 20Hz to 20kHz but these frequencies are not heard in the same way. Frequencies below 20Hz and above 20kHz are...
High-Frequency Issues In Electronics
This article covers some important issues in design of high-frequency electronic circuits and commonly followed practices to mitigate them.
Electronic circuits behave very differently at...
Image Processing Based Fire Detection & Extinguisher System Using Arduino
This is an image processing based fire detection and extinguisher system using Arduino. It is basically the system is divided into two parts:
Fire...
Build Your Own Digital Weighing Machine
This article guides you through building a budget-friendly digital kitchen scale that can measure up to 5 kilograms. It’s a simple design that's easy...
Teaching a Computer to Recognise Cats
Machine learning is a rapidly growing field which enables computers to learn patterns in the objects surrounding us. It is still a growing field...
Little Nightlight
Here we describe a very simple, economical and light-weight automatic nightlight that runs on 230V AC mains and can be used as a deluxe...
Door-Open Alarm
This door open alarm uses an input sensor fixed at the corner of the door frame and a magnet fixed on the door panel...
Battery-Powered Night Lamp Using an Old LED Bulb
This circuit utilises a low-cost 3W LED board to construct a battery-powered night lamp. This board consists of eight SMD2835 LEDs connected in series.
Branded...
Power-Saving Relay Driver
In many circuits, the switching action is performed by a relay, which in turn activates an external load. The power consumed by the relay...