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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!
Bicycle Guard
This anti-theft device for bicycles is inexpensive and can be constructed easily using a few components.
At the heart of the circuit is a wheel...
Solar Powered Pedestal Lighting System
This solar-powered pedestal lighting system uses power LEDs for lighting. Solar energy is first converted into DC electricity by a solar photovoltaic cell and used to charge a storage battery.
Voltage Based Controller For Switches
Here’s a simple voltage based controller circuit for controlling four switches from a distance through just a pair of wires.
Voltage based controller circuit
In the...
3V PC Adaptor
Plug this circuit into the available USB output port of your PC to get 50mA, 3V DC. So it can be used to recharge, for instance, two NiCd cells (1.2Vx2) of a portable music player system.
Low-Cost Battery Charger
Here is a very simple and low-cost charger for 12V, 7Ah lead-acid batteries. It can also be used for powering automobile engines and emergency lighting systems.
Clock Controlled Timer Circuit
With this simple clock controlled timer, you will never again miss your favourite TV or radio programme. The TV or radio will switch on...
Miniature Strobe Light
Strobe lights are widely used by disco lovers to create wonderful visual effects in disco halls and auditoria. The circuit of a battery operated...
Mobile Theft Alarm
This circuit works as a mobile anti-theft system. It produces a loud chirping sound whenever someone tries to take away the mobile and also works as a mobile charger.
Aquatic Probe
A number of environmental factors including light and temperature affect fish culture. The temperature of water has profound effect because fish cannot breed above...
Geyser Timer
This geyser timer circuit sounds an alarm after the set timing of 22 minutes when the water is heated up.
Geyser timer circuit
The circuit comprises...
Electronic Fuse
An absolute necessity of every electronics lab is a workbench power supply. The power supply should be regulated and protected against short circuit. Most...
Liquid Level Alarm
In water-level controllers for tanks, a DC current is passed through the metallic probes fitted in the water tank to sense the water level....
Electronic Dog Whistle
A dog whistle is a type of whistle that emits sound in the ultrasonic range, which people cannot hear but some other animals can,...
IC 555 Timer Tester
This simple and easy-to-use IC 555 timer tester not only tests the IC 555 timer in all its basic configurations but also tests the...
Acoustic/Mechanical Vibration Sensor
This circuit contains a piezoelement that detects any vibrations in the shutter of a shop and activates a lamp and a police tone alarm signal.
Zener Value Evaluator
Using this simple Zener value evaluator circuit and a known-value zener diode, you can find the breakdown voltage value of any zener diode. The...
Capacitor Evaluator
Using this circuit and a known-value capacitor, you can find out the value of any capacitor. This circuit can be divided into capacitor evaluator...
Desktop Power Supply
Useful for electronics hobbyists, this linear workbench/ desktop power supply converts a high input voltage (12V) from the SMPS of a PC into low...