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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!
Making PCBs at Home Photographically (Part 2 of 2)
Part 1 of this article in previous issue explained the creation of schematic and PCB layout. This part covers the remaining steps for making...
Want to Build Your Own Self-Balancing Robot?
Do a Google search on "build your own robot" and you'll find a treasure trove of kits, articles, and videos. Have you ever wanted...
Touch Switch Panel
How many times do we use an electric switch in a day? So often that it has become secondary nature and no one keeps...
Models of a Linear Feedback Shift Register using ModelSim
Presented here is a linear-feedback shift register (LFSR) using Verilog that is designed and simulated using ModelSim testbench. Register-transfer level (RTL) models are quite...
Programming Challenges and Solutions for Non-volatile Memory
Persistence or data storage is a very important aspect for any enterprise or consumer software. However, in terms of speed or latency, the persistent...
Arduino-based Front Office Visitor Alarm
This Arduino based visitor alarm is useful for offices, clinics and shops. It alerts you to the entry of a visitor by producing a...
Resolving Interference in a Crowded Wi-Fi Environment Using BAW Filters (Part 2)
Read part 1
There are any number of strategies that consumers can try to fix interference problems with Wi-Fi in their homes — moving the...
Wireless VU meter
VU meter is a standard device that indicates the signal level in audio equipment. Unlike other devices, this meter doesn't require a physical connection...
Super Simple Intercom
This intercom circuit based on IC LM380 audio amplifier requires very few external components. So the circuit is very easy to assemble.
Intercom circuit
Circuit diagram...
How Not to Run Hot: Overcoming Thermal Challenges in Wi-Fi Front-End Designs (Part 1)
For wireless access points or customer premises equipment (CPE), it can be hard to fully account for thermal management and the parameters affected by...
Interfacing Multiple LCDs With Arduino
Here we describe the interfacing of three 16x2 LCDs with common data lines to an Arduino Uno board. Four data lines of all the...
Water Pump Controller
Here is a simple water pump controller circuit for controlling the water level in an overhead tank. The main components of this pump controller...
Simple Sensitive Remote Control Tester
This handy remote control tester circuit for testing infrared-based remote control transmitters used for TVs and VCRs etc. The circuit is built around 7805 IC,...
Dew-Point Sensor
A dew sensor is used in sensitive electronic equipment like cameras and copiers etc, to protect them from moisture failure by fast detection of...
Bipolar Transistor Tester
This bipolar transistor tester can indicate the type of the transistor as well as identify its base, collector and emitter pins. The circuit is...
Strain Meter
This strain meter shows whether the strain is compressive (reducing the length) or tensile (increasing the length) when an object such as a strut...
Linear Timer For General Use
This simple linear timer can be used to control any electrical appliance that needs to be switched off after a certain time, like a...
Digital Pulse Tester
Here is a small digital pulse tester that can be used to test and troubleshoot digital circuitry. The circuit is essentially a pulse generator...