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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!
Ensuring Lower Thermal Dissipation for Higher Efficiency
A renowned manufacturing firm incurred heavy monetary losses when clients returned 5000 units of its LED lights after discovering that the supplied units failed...
30W Audio Amplifier Using NE5534 and Darlington Transistors
There are many different audio power amplifier ICs to choose from, but designing an audio power amplifier using an operational amplifier (op-amp) and bipolar...
Fan Speed Increasing Regulator Using PIC16F73
Voltage dips in mains supply make fans run very slow, leaving you sweaty through hot summers, especially if you don’t own an air-conditioner (AC)....
Design and Analysis of A Single Stage Transistor Amplifier Using C++
Single stage transistor amplifierDesign GuidelinesSoftware ProgramDownload source code: click here
Designing a single-stage transistor amplifier requires numerous formulas to calculate various parameters, such as the...
Electronics Projects: Controlling a Stepper Motor Using a Rotary Encoder
Presented here is a project for controlling stepper motor using rotary encoder. It consists of a Raspberry Pi (Raspi) board, 5-pin rotary encoder, 5V...
Faraday’s Guitar
Experimenting with the fundamentals of electrical and electronics is always interesting. Presented here is an electronic circuit that demonstrates Faraday’s law of electromagnetic induction...
Microcontroller Projects: Home Automation System
In this era of digital revolution, we are surrounded by smart devices that are capable of making decisions on their own without much human...
Microcontroller-Based Tachometer
A tachometer is nothing but a simple electronic digital transducer. Normally, it is used for measuring the speed of a rotating shaft. The number...
Moving Message Display On LCD
A moving message display is ideal to get your message (advertisements, greetings, etc) across in an eye-catching way. You can make an LCD show...
Microcontroller Based Clock Using DS1307
Digital wall clocks, table clocks and desk clocks with pointer or LCD display are readily available in the market. Here we present a microcontroller...
Phase Angle Control Of SCR Using AT89C51
Silicon-controlled rectifiers (SCR) are solidstate semiconductor devices that are usually used in power switching circuits. SCR controls the output signal by switching it ‘on’...
Bhajan and Mantra Chanting Amplifier
People in India like to chant various mantras as they believe it brings good luck, peace of mind and helps in concentration. Here we...
Infrared Proximity Detector
This infrared proximity detector using an infrared detector can be used in various equipment like automatic door openers and burglar alarms. Check it out...
Simple Soldering Iron Temperature Regulator
Soldering irons are available in different wattage and usually run at 230V AC mains. However, these have no temperature control. Low-voltage soldering irons (e.g.,...
Tachometer
Non-Contact Type Digital Tachometer
Low-Cost Tachometer
Simple Tachometer
DIY Tachometer built with a Microcontroller.
The article was originally published in December 2010...
Auto Reset Proximity Detector
Electrochemical processes taking place in our body generate complex signals (hum) that are continuously being passed along the nerve fibres throughout the body. Any...
Long-Range IR Transmitter
Most of the IR remotes work reliably within a range of 5 metres. The circuit complexity increases if you design a long range IR...
Telephone Receiver
Ever wondered how the old telephones used to work? find out here. This is a circuit for a telephone receiver without a dialling section. It consists of a ringing section and a condenser mic.