Infrared Sensor - How does IR Sensor work? IR Sensor Explained - Infrared Detector

Описание: What is an Infrared Sensor? How an IR Sensor works and How to connect IR Sensor with Arduino?
In this video, I will explain everything you need to know about IR Sensor and Infrared Detector.

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If you are a beginner and new to Electronics and Robotics, you might have heard the name of this sensor multiple times – The IR Sensor or Infrared Detector. But you might not know what it is. This is one of the most widely used sensors in hobby projects like a burglar alarm and line follower robots.

What is an IR Sensor or Infrared Detector?

IR sensor mainly consists of an IR transmitter (IR LED) and an IR receiver (Usually a photodiode).
IR SensorIR Sensor or Infrared Detector

IR LED always emits IR rays to the direction it is pointing to.

Now let us bring it closer to a surface. When the IR rays hit a surface, some rays will be reflected back depending upon the color of the surface. Means, the brighter the color is, the more IR will be reflected back.

Darker the color is, more IR will be absorbed by the surface and lesser IR rays will be reflected back.

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