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DFRobot LM35 Linear Temperature Sensor (SKU:DFR0023)

DFRobot LM35 Linear Temperature Sensor

Contents

 1 Introduction

 2 Specification

 3 Tutorial

3.1 Connection Diagram

3.2 Sample Code1

3.3 Sample Code 2

 4 Trouble shooting

 5 More

Introduction

The DFRobot LM35 Linear Tempe rature Sensor is based on the semiconductor LM35 temperature

sensor. The DFRobot LM35 Linear Temperature Sensor can be used to detect ambient air

temperature. This sensor is produced by National Semiconductor Corporation and offers a functional

range between 0 degree Celsius to 100 degree Cel sius. Sensitivity is 10mV per degree Celsius. The

output voltage is proportional to the temperature.

It is commonly used as a temperature measurement sensors. It includes thermocouples, platinum

resistance, thermal resistance and temperature semiconductor chips, which commonly used in high

temperature measurement thermocouples. Platinum resistance temperature used in the

measurement of 800 degrees Celsius, while the thermal resistance and semiconductor temperature

sensor suitable for measuring the temperature of 100-200 degrees or below, in which the application

of a simple semiconductor temperature sensor has good linearity and high sensitivity. The LM35

linear temperature sensor and sensor-specific expansion of Arduino board, in combination, can be

very easy to achieve.

Specification

 Based on the semiconductor LM35 temperature sensor

 Can be used to detect ambient air temperature

 Sensitivity: 10mV per degree Celcius

 Functional range: 0 degree Celsius to 100 degree Celsius

Tutorial

ConnectionDiagram

SampleCode1

Library installation

void setup()

{

Serial.begin(9600);//Set Baud Rate to 9600 bps

}

void loop()

{

int val;

int dat;

val=analogRead(0);//Connect LM35 on Analog 0

dat=(500 * val) /1024;;

Serial.print("Temp:"); //Display the temperature on Serial monitor

Serial.print(dat);

Serial.println("C");

delay(500);

}

SampleCode2

float tempC;

int reading;

int tempPin = 0;

void setup()

{

Serial.begin(9600);

analogReference(INTERNAL);

}

void loop()

{

reading = analogRead(tempPin);

tempC = reading / 9.31;

Serial.print("Temp:"); //Display the temperature on Serial monitor

Serial.print(tempC);

Serial.println("C");

delay(500);

}

Troubleshooting

More question and cool idea,visit DFRobot Forum