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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!
Multi Channel Hardware Driver for Embedded Systems
The real world embedded systems are controlling DC motors, stepper motors, electromagnetic relays, incandescent lamps, powerful LEDs, displays, inductors, transformers, long cables, etc.
On the...
Simple Universal AC Or DC Amplifier with OPA452/OPA453 And Transistors
Introduction
During the experiments with loudspeakers, systems with loudspeakers, transformers, public announcement systems, audio distribution lines and amplifies, etc, we are in need of audio...
Solar Powered Home Lighting System
This project suggests a solar powered home lighting system that uses solar power and LED lighting technology in a more efficient way. Solar power...
Battery Low Indicator
Rechargeable batteries should not be discharged below a certain voltage level. This lower voltage limit depends upon the type of the battery. This simple...
Versatile Water-Level Controller
This simple, economical and versatile water level controller circuit switches on the motor pump when water in the overhead tank falls below the lowest...
Designing An Accurate Temperature-Monitoring System
Modern electronic systems use sensors to monitor parameters like temperature and provide protection from excessive temperature excursions with good accuracies, reasonable costs and often...
Wi-Fi Controlled Robot Using Arduino UNO And Blynk
This Wi-Fi controlled robot can be controlled from anywhere using the ARMA IoT shield for UNO and the Blynk App which provides the user...
Antenna Analysis and Design in MATLAB
Today, almost all applications are expected to be wireless, consume very little power and have high data retention capability.
For this, selection of an effective...
Smart Solar Charger
Solar powered lighting systems are now used in rural as well as urban areas. These systems include solar lanterns, solar home lighting systems, solar...
Time-Lapse Photography With Raspberry Pi 3
This project aims at developing a simple time-lapse photography device with Raspberry Pi 3 and Pi camera.
To get the most out of nature without...
Converting the Stereo Audio Distribution Buffer into Stereo Audio Distribution Amplifier
The stereo audio distribution buffer published on page 94 of the July 2013 Edition of EFY can be converted easily into stereo audio distribution...
Dual Universal Hardware Driver for Embedded Systems
Introduction
The embedded systems should drive different peripheral devices requiring significant electrical power.
A typical case is the DC motors, operating from 6V, 12V and 24V.
These...
Electromagnetic Compatibility: Grounding (Part 3 of 5)
In the previous parts we covered multi-layer PCB designing. Now, let us look at grounding or earthing.
Grounding can be defined as a connection, whether...
Low Cost High Impedance Buffers for Oscilloscopes and Voltmeters
Most of the low cost digital oscilloscopes and voltmeters have input resistance around 1 MOhm and input capacitance around 100pF. But in many case...
Two-Watt TBA820M AF Amplifier
Here is a simple AF amplifier project based on TBA820M IC. This amplifier can deliver two-watt output power with 8-ohm speaker using a 12V...
Bipolar Power Supply with LM317T and with LM337T Controllable with Stereo Potentiometer
LM317T and LM337T are well known and low cost adjustable voltage regulators with current limiting up to around 1.5A and power dissipation up to...
Wireless-Powered LED
Wireless power is transferred from transmitter to receiver coil using inductive coupling principle. For wireless power transfer to work efficiently, frequency of the transmitter...
Simple Audio Power Amplifier With NE5534/А And Darlington Transistors With Up To 30W Of Output Power
These days there a lot of audio power amplifiers in integrated circuits (ICs). But it is still interesting to produce audio power amplifiers with...