Door Alarm Security System It is a simple tutorial on how to create little a security device using an Arduino. Here we are going to make...

Introduction to Star-Delta Starter  Most induction motors are started directly on line, but when very large motors are started that way,...

Ultrasonic Sensor An Ultrasonic sensor is a device that can measure the distance to an object by using sound waves. It measures distance...

Speed Checker For Highway While driving on highways, motorists should not exceed the maximum speed limit permitted for their vehicle. Howe...

Discovery Of Electricity Electricity is a form of energy and it occurs in nature, so it was not “invented.” As to who discovered it...