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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!
Traction Inverter Reference Design For LEVs
Facing range and motor control issues in light EVs? This inverter design claims to cut redesign work and speed up development. Read on to...
20 Rupees Battery Charger
Battery chargers power almost every modern device—from smartphones and IoT nodes to toys and portable gadgets. Most of these products rely on standard 3.7V...
Wearable Oxygen And Heart Rate Monitor Reference Design
See your heart rate and blood oxygen anytime with a small wearable. It uses multiple sensors and sends data wirelessly, lasting long on a...
Musical Temperature Alarm
A musical temperature alarm is an electronic circuit that detects when ambient temperature exceeds a preset limit and triggers a melody instead of a...
Overcurrent Relay with IDMT for Motor Protection Using Arduino
This is a DIY Arduino-based overcurrent relay project that emulates Inverse Definite Minimum Time (IDMT) protection using an Arduino Nano and ACS712 current sensor....
Custom AI-enabled Home Automation using ESP RainMaker
This tutorial explains how to build an AI-enabled smart home automation using ESP RainMaker. The system supports lights, fans, relays, sensors, RGB LEDs, OTA...
Smart Air Quality Monitoring System using Arduino
Air pollution is a critical concern in modern living environments, particularly in enclosed spaces such as homes, offices, factories, and laboratories, where prolonged exposure...
Railway Track Gauge and Superelevation (Cant) Measurement System using Arduino
This project presents a portable Arduino-based digital instrument for railway track inspection that measures super elevation (cant), track gauge, and rail temperature. Built around...
Low-Cost 40A, 1200V Solid-State Relay with Voltage Controller
This project describes a high-power solid-state relay (SSR) and AC voltage controller built using a BTA41-1200BW TRIAC (40A, 1200V) and MOC3041 opto-triac. Unlike conventional...
5 Interesting DALI‑Based LED Lighting Reference Designs
These DALI reference designs enable quick control, dimming, and testing of LED lighting without additional hardware or complex setup.
DALI (digital addressable lighting interface) has...
GUI Reference Design For Embedded Display Applications
It offers design engineers a ready-to-use, open hardware foundation for developing embedded graphical user interface (GUI) products, enables faster prototyping, reduced design risk, and...
Display Driver Shield Reference Design
Why do LED displays still feel limited? A design approach removes size, wiring, and power limits, helping engineers build displays faster.
Design engineers often face...
Guide For Engineers To Create Innovative, Manufacturable PCBs (Part 3)
Bringing a modern PCB design together into reality is often the real test. The third part of this series offers practical insights to streamline...
Raspberry Pi Object Tracking Camera using MediaPipe
In this project, we build a real-time object-tracking camera using Raspberry Pi and MediaPipe. The camera detects a selected object, calculates its position in...
Accelerating Embedded Touchscreen GUI Reference Design
By combining proven hardware architectures with reusable graphics software, it helps engineers cut development time, reduce system complexity, and deliver intuitive, visually rich interfaces...
Automotive Infotainment Display Module Reference Design
Cold starts, voltage drops, and multiple power rails can break automotive displays. This design shows a simple, reliable way to keep them running safely.
Automotive...
Audio Pre-Processing System Reference Design
The design helps you capture voice in noise, reduce background sounds, and run voice recognition locally or through the cloud for devices and apps.
Capturing...
Reference Design For DALI Slave Lighting Control
It highlights the DALI interface, protocol handling, and LED drive control needed for reliable dimming, individual fixture addressing, and seamless integration into modern building...