MEGA COLLECTION OF ELECTRONICS DIY PROJECTS
Every week, we publish 2 to 3 projects, sometimes even more! They range from simple circuits for beginners, to advanced projects that you can use to develop complete innovative products! Most projects have been developed by enthusiasts like you. Some by experts. And, some by our team. Many are tested at EFY Labs, and some are not–but they typically have a proof-of-concept video.
Light-Sensitive Fire Alarm
This light sensitive fire alarm circuit is extremely sensitive, low-cost and easy to assemble even by a beginner. It uses infrared photo transistor as...
Simple 12V, 1A SMPS
Most electronics enthusiasts require DC power supplies to operate various devices and accessories. The most popular and common supply is a 12V DC supply...
LME49710 Based Audio Amplifier
Listening to music on a self-made system is great. Good-quality audio amplifier circuits can be constructed with minimum components. Described here is an LME49710...
Dimming LCD Backlight
Presented here is a power-saving LCD backlight control circuit. An LCD is used in many projects for indication or information display since it consumes less...
Fastest Finger First Indicator
Quiz-type game shows are increasingly becoming popular on television these days. In such games, fastest finger first indicators (FFFIs) are used to test the...
GSM Based Messaging Using Arduino
Today, GSM networks are widely-used, whether for making calls or sending SMSes. But some places need urgent messages like in colleges, railway stations, events,...
Gas Leakage Alarm
LPG gas is supplied in pressurised steel cylinders. As this gas is heavier than air, when it leaks from a cylinder it flows along...
Electronics Projects: Simple Line-Following Robot
Generally, line follower robot is microcontroller-based. Here we describe a line follower robot without microcontroller for those who are not familiar with microcontrollers. It...
Universal Power Supply
Linear regulators like LM317, LM337, 78xx and 79xx, Zener diodes (1.3W) and reference diodes (e.g., LM336) are quite inexpensive and widely available. So you...
Visitor Counter
Presented here is a simple counter circuit that counts the number of visitors entering or exiting an auditorium or any other place where you...
Stress Meter | Circuit Diagram With Full Explanation
This stress monitor lets you assess your emotional pain. If the stress is very high, it gives visual indication through a light-emitting diode (LED) display along with a warning beep. The gadget is small enough to be worn around the wrist.
Simple Low-Cost Visitors Counter
Here is a simple and inexpensive visitor counter circuit that you can build easily. Visitor counters available in the market are generally expensive and...
Portable Crystal Tester
A crystal tester is an indispensable tool. Most electronics projects working with high-frequency equipment utilise crystals to generate frequency for an oscillator. Using this...
Low-Cost Quadraphonic Amplifier
Here is a circuit for a simple but useful low-cost quadraphonic (having four channels) amplifier. It can be used for experiments in open or...
DIY: Arduino Chatting
Networking is the one of the most important mean of communication used to communicate with people who are connected to one. Most of the...
Auto Switch-off Staircase Light
In areas like staircase or porch of your home, lighting is required only for a short period of time at night. We often forget...
Electronics Projects: Simple RF Based Code Lock
This simple radio frequency (RF) based code lock incorporates a pair of 433MHz ready made RF transmitter and receiver modules. It is a remote-controlled...
Electronics Projects: How to Build a Lid-Monitoring Sensor Module
If you need a lid monitor sensor system for an application, this is the circuit you have been looking for. One application for such...