Basics of Light Emitting Diode (LED)
In this video, the author is going to give you a tutorial on Light Emitting Diode (LED) basics. In this tutorial, he will be...
Water Level Controller-Cum-Motor Protector
Many a time we forget to switch off the motor pushing water into the overhead tank (OHT) in our households. As a result, water...
Smart Emergency Light
An emergency light can come in handy at all sorts of time, especially when there's a power outage. Now you need not fear dark...
Long Range FM Transmitter
Several circuits for constructing FM transmitter have been published in EFY. The power output of most of these circuits were very low because no...
Traffic Timer Board
Almost all traffic signal carry a count down timer to indicate remaining time before red/green lights are turned off. This article explain the working,...
PC Based Timer
Timers are very useful both for industrial applications and household appliances. Here is a PC based timer that can be used for controlling the...
Numeric Water Level Indicator
Most water level indicators for water tanks are based on the number of LEDs that glow to indicate the corresponding level of water in...
Secured Room Access System
Security is a prime concern in our day-to-day life. And access control system forms a vital link in a security chain. The microcontroller based...
Cellphone Operated Land Rover
Conventionally, wireless-controlled robots use RF circuits,which have the drawbacks of limited working range, limited frequency range and limited control. Use of a mobile phone...
Pressure Sensors on Railway Tracks
Every year thousands of animals die after being hit by trains. Animals on train tracks are dangerous for both animals and the train as...
