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Engineering Projects For You

Free engineering project ideas, circuit diagrams and software codes for students and hobbyists. Complete instructions on DIY electronic devices. EFY tested circuits with source codes.

SMS Alert System

We receive many SMS alerts every day. These are automated messages that are broadcast to a list of mobile numbers. Ever wondered how the system works? This article can help you...

IoT Based Smartcamera Using Android And Raspberry Pi

Presented here is a project that lets your Raspberry Pi (RPi) turn into a remote camera and then control and watch live video being captured by this camera on your smartphone...

81-LED Chaser Light Using CD4017

This is a simple 81-LED chaser light using two CD4017 decade counters. NE555 timer is used for clock generation for CD4017. We have used only two CD4017 ICs to construct the...

Implementing High-Security Remote Control Systems

In remote-control operated systems, security is always a concern. The system must be designed to prevent unauthorised access. Special software and encryption are used to prevent eavesdropping. This is why such...

LM386 Audio Amplifier

Here is a simple audio amplifier circuit built around 8-pin integrated circuit LM386. The author’s prototype is shown in Fig. 1. Circuit and working Circuit diagram of the LM386 audio amplifier is shown...

Wireless Digital Thermometer For Multiple Sensors

A lot of remote sensing thermometers have a problem with measuring more than one temperature at a time. To overcome this problem, a different technique is adopted here, which allows you to...

Selecting The Right Microcontroller For Embedded Applications

This article discusses the criteria for selecting the right microcontroller (MCU) for different embedded applications. It also discusses the design challenges and system limitations of MCUs in embedded applications. Application in home...

How To Make A Business Card Flashlight

The aim of this article is to make a business/visiting card useful, something that people really do not want to throw away and use as a piece of advertising. Essence of...

Simple Suitcase-Lift Alarm

This suitcase-lift alarm circuit uses vibration sensor HDX-2NC instead of a commercially available sensor. A home-made mercury switch can also be used instead. Circuit and working Circuit diagram of the simple suitcase-lift alarm...

Laser Security System

This project powered using a mobile charger which gives 6volts and 500mA. It can also powered using battery ranging 6volts. In this 2x5v relays are used. There is a simple password...