top of page

Arduino- PIR Sensor

This is my Arduino- PIR (Passive Infrared Sensor) project. I hope you like it. This is also a very easy project but first let's see what is a  Passive Infrared Sensor.

Passive Infrared Sensor

The PIR motion sensor is ideal to detect movement. PIR stand for “Passive Infrared”. Basically, the PIR motion sensor measures infrared light from objects in its field of view.

So, it can detect motion based on changes in infrared light in the environment. It is ideal to detect if a human has moved in or out of the sensor range.

The sensor in the figure above has two built-in potentiometers to adjust the delay time (the potentiometer at the left) and the sensitivity (the potentiometer at the right).

White Structure

Circuit Diagram and Code

Here's the circuit diagram and code for Arduino- PIR Sensor project

Code for Arduino PIR Sensor-

bottom of page