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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 Exhaust Fan Switch

Exhaust fans in washrooms can be connected to the lighting circuit so that these switch on and switch off with the electric light. But...

Sensor-Based Door Lock

The door lock controller given here is a simple electronic switching circuit realised using a low-cost unipolar Hall effect sensor IC MH183. This CMOS...

Multicolour Curtain Backlights

This circuit comprises two parts: a string of 5mm high-intensity white LEDs connected in series and the circuit wired around. IC CD4060 with an...

Clap-Based Digital Volume Control

This clap-based digital volume control offers four levels of volume control. With each clap, the volume of the audio system increases. After the fourth...

Analogue Wattmeter

Unlike current or voltage measurement, the measurement of power is somewhat inconvenient as power is the product of voltage (V) and current (I) flowing...

Guitar and Microphone Amplifier Using TDA2005M

This simple audio power amplifier works with guitars and microphones, delivering an output power of around 20W over a load of 4 ohms. The amplifier...

Audible Logic Probe

Using a conventional logic probe, it is difficult to determine what is happening at a point in a circuit above 50 Hz. The human...

Your Guide To Soldering

Attaining ‘zero defect’ production requires a thorough knowledge of soldering technology. Here is a lowdown on the different kinds of techniques, material and equipment...

Simple Parking Counter

This simple circuit can be used to count the number of cars entering a parking lot. The circuit is built around comparator LM311 (IC1), timer...

Simple Water Temperature Indicator

When bathing a baby, it’s important that the water is neither too cold nor too hot. You test the water by dipping your fingers...

Driveway Alarm

You can install this system in the driveway itself to detect intrusion by a vehicle, person or large animal. It sounds an alarm when...

Versatile DC-DC Converter

Here is a versatile power coupler that connects a device to 5V-19V DC generated from AC mains by a power adaptor. Power adaptors come...

Intercom Using LM386

Keep in touch with your family members from one room to another and also from outside areas such as the garage, using this intercom...

Laser Demo in ‘C’

Here is a program to demonstrate the working of a laser. Laser is a device that creates a uniform and coherent light, unlike an...

Active Reflector for Pedestrian Safety

Pedestrians crossing roads in badly-lit areas, particularly at night or in the early morning, run a risk of accident. There are readymade arm bands...

SERVO MOTOR TESTER

When using a servo motor in a project, if the servo motor does not respond as per the input, how to make sure that...

Home Appliances Control Using Telephone

Using this circuit, you can control up to seven electrical appliances through a telephone. The circuit can switch on/off the appliances in two modes....

1Hz Precision Clock Timer

This timer makes an LED flash once every second along with a beep. The timing circuit uses a quartz crystal available in digital watches...
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