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Countdown Timer

Sometimes there is a need to switch on or off electrical appliances or gadgets after a predetermined time. The circuit presented here can switch...
arduino timersvideo

Learning Corner: Arduino Timers

In this video, the presenter will show you how to use the timer of a microcontroller (Arduino Uno -- ATmega328P) to not only create...

Arduino Based Digital Capacitance Meter: An Interrupt Based Approach

Capacitive sensors are widely used to measure various physical and chemical process parameters such as displacement, acceleration, thickness, force, pressure, stress, level and humidity....

Auto-reversible DC motor with speed and rotation control

DC motors are widely used in different machines, mechanisms and motion controls in manufacturing and processing industries. In these machines, it is often required...
Ethernet interface for automation system

Ethernet Interface for Automation Systems

Communication with remotely located automation systems is possible via the Internet. A physical communication port with a network is required for this communication. An...

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...

Line Frequency Meter Based On Reciprocal Counting

Precise measurement of line-signal frequency is very important in many applications, especially in the management of power grid systems. Tasks like calibration of governors...

Weigh Machine

Eight years back I purchased a small bathroom scale from @Home ,Mumbai and it cost me a good amount of money then. It's a...

Wireless Control of Servo Motor

I made my first robot when I was in college and always thought to make totally wireless. So the same I thought about making...

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