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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!
Optical Smoke Detector
This optical smoke detector uses a low-cost, readily-available, slotted, through-scan, infrared photo-switch. When smoke is detected, the relay energises to activate the audio/visual warning...
Manual EPROM Programmer
The programmer devices required for programming the electrically programmable read only memories (EPROMs) are generally expensive. Here is a low-cost EPROM programmer circuit to...
Wireless Stepper Motor Controller
Here is a low-cost and simple wireless stepper motor controller using infrared signals. Using this circuit you can control the stepper motor from a...
Digital Frequency Comparator
Here’s a digital frequency comparator for oscillators that indicates the result through a 7-segment display and a light-emitting diode (LED). When the frequency count...
Microcontroller Projects: RGB Colour Generator
Presented here is a red, green and blue or RGB colour generator using AT89C2051 microcontroller (MCU). This is a simple and low-cost circuit for...
Flashing LED Light
An LED flashing at the doorstep of your garage or home will trick the thieves into believing that a sophisticated security gadget is installed....
Auto Snooze for Digital Alarm Clocks
Alarm clocks are made to wake you up. However, it is quite bothersome to hear the alarm continuously until you get up and put...
Smart Foot Switch
This is a circuit that can be used to switch on and off two devices alternatively or both together by using switches. Two switches are for each device to turn them on and switching off other device, also it has a separate switch with an option to turn on both the devices simultaniously.
Automatic Soldering Iron Switch
Soldering irons are most often used for installation, repairs, and limited production work in electronics assembly. High-volume production lines use other soldering methods. You...
Ding-Dong Bell
A doorbell is a signalling device typically placed near a door to a building's entrance. When a visitor presses a button the bell rings...
Programmable Timer for Appliances
This is a circuit for a programmable timer that can be used to switch on/off a device after a pre-set time period that can be varied from 8 seconds to 2 hours. It works in two modes, cyclic mode and off mode that can be switched by using a slide switch.
Multiband Transmitter
A radio frequency oscillator is at the heart of all radio transmitters and receivers. It generates high frequency oscillations, which are known as carrier...
Versatile LED Display
This versatile LED display circuit uses an erasable programmable read-only memory (EPROM) to display various light patterns on LEDs. Since bicolour LEDs (comprising green...
Chant Player
Chanting combines singing and music with mantras. The sweetness of chanting stills the mind, dissolves worries and opens the heart. Chanting forms an integral...
Electronic Street Light Switch
Here’s a simple and low-cost street light switch. This switch automatically turns on the light at sunset and turns it off at sunrise. The...
Sound Operated Intruder Alarm
When this sound operated intruder alarm detects any sound, such as that created by opening of a door or inserting a key into the...
Twilight Blinker Lamp
During sunset or sunrise, the ambient light is not adequate to lead you through the open doorway or make your way around obstructions. To...
Multipurpose White LED Light
Standard fluorescent lamps and their smaller versions called compact fluorescent lamps (CFLs) radiate light in all directions (360°) and tend to increase the room...