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“A sensor is a device that detects and responds to inputs from the physical environment. The input can be light, heat, motion, moisture, pressure, or any other environmental phenomena. Sensors are very important part of electronics, especially in Robotics and Automations. The output generated by the sensors are transmitted to other circuits for reading or for further processing. They make our life easy by automatically sensing and controlling devices, without human interaction. In this tutorial, we are going to talk about “IR sensors” or Infrared sensors, how they work and how to build a “DIY IR Sensor Module”.”

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