MEGA COLLECTION OF ELECTRONICS DIY PROJECTS
Every week, we publish 2 to 3 projects, sometimes even more! They range from simple circuits for beginners, to advanced projects that you can use to develop complete innovative products! Most projects have been developed by enthusiasts like you. Some by experts. And, some by our team. Many are tested at EFY Labs, and some are not–but they typically have a proof-of-concept video.
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...
Wearable Health Monitoring Tag With Telegram Bot
In this project, I built a wearable health monitoring tag that you can actually chat with on Telegram. Using a pulse oximeter sensor and...
AI-Based Hand Tracking for Robotic Arm Control
In this project, I show how to control a robotic arm servo using real-time hand tracking powered by AI image processing. We use MediaPipe...
Simple Overflow Stopper
Even though water covers two-thirds of the Earth’s surface, less than 1% of it is fresh and easily accessible for human use. Preventing unnecessary...
Multifunction Human Detection And Weather Monitoring IoT Radar System
A human detection system was designed earlier to utilise the microwave Doppler effect to detect human movement and trigger AC appliances such as light...
Hybrid AC–DC Smart Grid Using IoT and Cloud Monitoring
This system integrates traditional AC grids with DC systems, such as solar panels, batteries, and EV chargers, and coordinates them through software, automation, and...
Batteryless IoT Device
This article explains and demonstrates batteryless and ultra-low-power energy harvesting systems designed to power wearables, IoT devices, and sensors using ambient energy instead of...
Density-Based Traffic Light Controller using Arduino
This project demonstrates a low-cost intelligent traffic signal system using Arduino and ultrasonic sensors to reduce congestion caused by fixed-timer traffic lights. Four HC-SR04...
Biometric Electronic Voting System with Real-Time Authentication and Keypad
This project presents a secure, low-cost electronic voting system using Arduino Uno, an R305 fingerprint sensor, a keypad-based button interface, and an LCD display....
Power Bank Circuit Diagram
In our fast-paced digital world, staying connected is essential, and a reliable power bank is a must-have accessory for smartphone users.
This smartphone power bank...
This Face-Recognition Robot Santa Is the Coolest Christmas Project
This is a cool device that can recognise you and greet you while playing the song “Jingle Bells” and distributing chocolates.
We are now in...
Resistor Color Code Calculation Formulas, Calculator, and Common Mistake
This table will help you with managing resistor color code so that you don't burn up your circuit due to a wrong resistor.
Right below...
Digital Thermometer using Arduino
We built this Arduino-based Digital Thermometer for temperature measurement applications.
Thermometers have been useful for temperature measurement for a long time. A digital thermometer is...
Smart EcoBin: Intelligent Waste Management System
The Smart EcoBin is an intelligent waste management system designed to promote environmental sustainability and improve the efficiency of waste collection. Equipped with multiple...
Superior Motion Sensor Using Microwave Doppler Radar
An earlier design introduced a touch solid-state AC switch. The new version advances this concept with a sophisticated human radar sensing system that can...
Control AC Loads Wirelessly With This RF Relay Switch
The demand for convenient and reliable switching systems is increasing across homes, offices, and industrial environments. Conventional methods, such as wired switches and infrared...
Fancy USB LED Vase
This USB LED vase is a simple yet elegant device that fuses art with electronics to create a decorative lighting display. Powered directly from...