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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!
Temperature Based Fan Speed Control Using Arduino
This project offers a stand-alone, automated fan speed controller that intelligently adjusts the fan speed in response to temperature changes.
Using embedded technology, this closed-loop...
Automatic Water Level Controller Circuit: Design and Operation
Here is a simple automatic water-level controller for overhead tanks that switches on/off the pump motor when water in the tank goes below/above the...
Design Considerations For Autonomous Vehicles
Driverless cars are aimed at reducing the number of accidents, cutting down emission and easing congestion. This article details some factors that must be...
12V Battery Absorb and Float Charger
Most battery chargers stop charging the battery when it attains its maximum charging voltage set by the circuit. This 12V battery charger circuit charges...
Raspberry Pi Real-Time Face Recognition Doorbell
In this DIY project, we are going to build a Raspberry Pi face recognition smart doorbell that identifies the person on the door, for...
5W Stereo Audio Amplifier
Here is how we can build a 5W stereo audio power amplifier based on TEA 2025 IC and two potentiometers for left and right...
The Power Challenge In Wearable Devices
Wearable devices are becoming very popular, not least as we become more aware of monitoring and improving our wellness. But for these devices to...
Control Robotic Car With Voice
This project describes the implementation of a voice-controlled robotic car using Arduino. In this project, the user gives specific voice commands to the robot...
Distance Counter
Presented here is a simple pedometer (Distance Counter) circuit. It measures the distance covered by you while walking. It may not work very well...
Build Non-Contact Type Digital Tachometer
A tachometer measures the rotation speed of motors and other machinery. There are various types of tachometers. Described here is a digital non-contact type...
Real-Time Face Detection and Recognition for Security Purposes
This article demonstrates real-time training, detection and recognition of a human face with OpenCV using the Eigenface algorithm. Let us construct this OpenCV Face Recognition...
PC-based Oscilloscope Using Arduino
Oscilloscopes are an essential tool for electronics hobbyists and professionals to verify that their designs would work as expected. PC based Oscilloscope score over...
RFID-Based Automatic Desktop/Mobile Phone Login Device
We have so many login passwords to remember in order to access our laptops, emails or online banking. And forgetting password is something that...
Speed Control Of DC Motor Using Pulse-Width Modulation
Pulse-width modulation (PWM) or duty-cycle variation methods are commonly used in speed control of DC motors. The duty cycle is defined as the percentage...
Make This Simple Graphical LCD Scope
This scope reads input signal and displays the output waveform on a graphical liquid crystal display (GLCD) having 128×64-pixel resolution. The signal is fed...
Force-Operated Toy Organ
This toy organ for children uses a readily-available force-sensitive resistor (FSR) and an NE555 timer IC. Resistance of the FSR varies with the amount...
Wireless LCD Display Via Bluetooth
This wireless LCD display shows information sent from a smartphone. The user can send text messages with up to 32 alphanumeric characters to the...
ESP32 (Non-Standard) GPS Receiver
Introduction
GNSS – GG-1802 ($5 a piece)
Sometimes things do not fall in place and we curse ourselves for taking the wrong turn or making the...