How to Use PIR Sensor module with Arduino

This video discusses how to use the PIR Sensor module with Arduino.

PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensor's range. They are small, inexpensive, low-power, easy to use, and don't wear out. For that reason, they are commonly found in appliances and gadgets used in homes or businesses.

A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view.... They work entirely by detecting infrared radiation (radiant heat) emitted by or reflected from objects.