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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!
Smart 230V AC Bulb Holder
The smart 230V AC bulb holder introduced here is an ultra-simple device with an automatic electric bulb controller switch and a standard electric bulb...
A Simple Timer Based On Arduino Uno
Presented here is a simple timer kit built around an Arduino Uno board. It can be used to measure the time delay duration of...
Automatic Lights and Door Without Microcontroller
There are various IoT devices available in the market that perform tasks based on voice commands such as opening a door or switching on/off...
Low-cost 3.7V to 5V-6V DC-to-DC converter
This article presents a simple, low-cost DC to DC converter that converts 3.6V-3.7V battery input into three outputs of 6V, 5.3V and 5V. These...
14-Watt Hi-Fi Audio Amplifier Using TDA2030A
Here is a simple mono audio amplifier using a single 5-pin IC TDA2030A. This IC is inexpensive and easily available in the market. The...
RPI Voice Recognition For Home Automation And IOT
Voice Recognition For Home Automation and IoT Having On Board RPi using AIY and it can recognize the voice . Now no need to...
IR Based Automatic Hand Sanitiser Dispenser
This project is based on an infrared (IR) sensor, which detects the presence of hands and consequently activates the motor pump to dispense alcohol-based...
Dual Microphone Preamplifier For ADC, MCU And Arduino
Most microphones’ output signals are weak and cannot be directly connected to some other circuits. Also, some microphones require DC power supply or high...
Hot Water Utilisation Enhancer For Solar Water Heater
The circuit presented here is a simple device to enhance the utilisation of hot water from a solar water heater system. Normally, during day...
Make Your Own Temperature And Pulse Oximeter
MAX30100 issues: Pandemic period and the whole world is working towards its remedy & precautionary measures. The hobby electronics world is no exception for...
Make A 9V Battery Adaptor For Arduino Board
Arduino board requires a USB cable connected to a laptop/PC or an external AC/DC adaptor for power supply. If you want a portable Arduino-based...
High Impedance Differential Probe For Oscilloscopes And Multimeters
The most commonly used multimeters and oscilloscopes are sold with simple non-symmetrical (single-ended) probes. But often we need differential probes to measure and observe...
3D Magnetic Flux Meter Using Arduino
In engineering, especially electronics, often the magnetic flux is required to be measured around a device. It also has several other applications such as...
Wireless Remote Control Functionality Using YODA And Arduino
This Wireless Remote Control project is based on Yoda with an adapter and Arduino Nano. Electrical appliances (like fan and lights) can be controlled...
Real-Time Clock (RTC) With Temperature Display Using Arduino
This project demonstrates how you can build a real-time clock (RTC) with a temperature display using Arduino, DS3231 RTC chip, and SSD1306 OLED display...
Make This Handy Zener Meter For Faster Testing
The circuit presented here is compact and handy for measuring the voltage rating of a Zener diode instantly. To check a Zener diode, it...
Make A Simple Capacitive Touch Keyboard With Arduino
Certain shortcuts on your keyboard such as copy, paste or print can definitely simplify your work. And what if you can create these different...
Conveyor Jam Detector For Industries
The conveyor jam detector circuit presented here is designed to activate an alarm device or programmable logic controller (PLC) when the speed of the...