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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!

GPS Location-Based Alarm

Have you ever gone out to run errands and ended up forgetting any major ones?  Many times we create a list for shopping or plan to do something like shopping and any...
Fig. 1: Top view of Agri-voltaics farm spread over one acre land with 900 panels mounted in alternate slots

Off-Grid Carbon-Neutral Integrated EV Charging Complex

The proposed off-grid integrated system will be very useful when there is a sudden grid failure. It will continue to provide charging for two- and four-wheelers. Besides it will enable bio-CNG...

Reference Design For An Industrial Motor Drive

The reference design REF-22K-GPD-INV-EASY3B from Infineon is an industrial motor drive for three-phase 400 V AC grids and has a nominal power of 22 kW. It includes a power module, current...
Fig. 1: Author’s prototype wired on a breadboard

Power Supply With Digital Volt-Amp Panel Meter

This is a variable power supply with digital volt-amp panel meter. Its advantage is that you do not need a separate voltmeter, ammeter, or multimeter while using this variable power supply...

IOT Cameras That Can Chat

Nowadays, everyone's main concern is the safety of pets and kids when we are not around them. This concern keeps us constantly worried when we travel for holidays, go to work...

Reference Design For A 10A Fast Battery Charger 

The fast charging reference design from Renesas is capable of delivering a high charging current of 10A. The reference design is up to 98% efficient and employs a high-efficiency current doubler...

Reference Design Of USB BC 1.2 Compliant Charger

Do you want to design a battery charger that can accurately monitor the status of your battery pack? Then this reference design can simplify your work. The Reference Design from Maxim Integrated...

Reference Design of Battery Charger With MPPT

Solar energy harvesting is on the rise, but the main drawback of solar energy harvesting is that it can only generate electricity when the sun is present in the sky. To...
EFY Lab’s prototype on breadboard

Milli-Ohm Meter With 0.1 To 1-Ohm Range

Most shunt resistors have values below one ohm. Such low values of resistances cannot be measured reliably due to range and resolution limitation of the measurement devices. These are usually measured...

2S Cell Charger With An Integrated Boost Converter

The EV2639A-R-00B from Monolithic Power Systems is the reference design for a 2S charger with an integrated boost converter. The reference design features a highly integrated, flexible switch-mode charge management IC...
 
 

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