Tutorial

IR Sensors (Infrared Sensors)

IR ( Infra Red ) Sensors

An IR or Infrared sensor is an electronic instrument that is used to sense motion or any changes of its surroundings by either emitting or detecting infrared radiation. It can also measure heat of an object and detecting motion. Infrared waves are not visible to the human eye. 

DTMF ( Dual Tone Multi Frequency)

Introduction

RFID(Radio-frequency identification)

Radio-frequency identification (RFID) technology involves the use of electromagnetic or electrostatic coupling in the RF portion of the electromagnetic spectrum to uniquely identify an object, animal or person. It has established itself in a wide range of markets including livestock identification and automated vehicle identification because of its ability to track moving objects. The technology has also become a primary component of automated data collection, identification and analysis systems worldwide.

LM35 Temperature Sensor

TEMPERATURE SENSOR

As we all know what does a temperature sensor do. In simple words these are devices used to measure the temperature or heat of a medium. 

LM34 Temperature Sensor

The LM34 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Fahrenheit temperature. The LM34 thus has an advantage over linear temperature sensors calibrated in degrees Kelvin, as the user is not required to subtract a large con-stant voltage from its output to obtain. Low cost is assured by trimming and calibration at the wafer level.

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