Learn Arduino Sensors: All Sensors, Description, Application, Specifications, Example Codes, Notes (English Edition)

This Book Contain All Arduino Sensors Full Explanation, Programing codes, and Application


A sensor is the guy who provides data to the a system via its input. Say you set your air conditioning system to bring the room temperature to 15 degrees, considering it was previously off (and the current temperature of the room is different that 15 degrees), now the system starts pumping air to bring the room to the desired temperature, how does it know when the room temperature has been reached?
Here is where the sensor comes into play: there must be a sensor in the room to tell the air-conditioning system to stop pumping when the wanted temperature is attained. That is roughly it.