Step 1: Introduction about the Analog Temperature Sensor
Step 2: Hardware Required and Circuit Diagram
Step 3: Connection to be done

Published June 4, 2018 © Apache-2.0

Monitoring Temperature Using a Temperature Sensor

How to monitor temperature using a temperature sensor.

BeginnerFull instructions provided21,652

Monitoring Temperature Using a Temperature Sensor

Things used in this project

Hardware components

Arduino UNO

Temperature Sensor

Software apps and online services

Arduino IDE

Story

Step 1: Introduction about the Analog Temperature Sensor

The LM35 series are precision integrated-circuit temperature devices with an output voltage linearly proportional to the Centigrade temperature. LM35 is a three-terminal linear temperature sensor from National Semiconductor. It can measure temperature from -55 degree Celsius to +150 degree Celsius. The voltage output of the LM35 increases 10mV per degree Celsius rise in temperature. LM35 can be operated from a 5V supply and the stand by current is less than 60uA. The pin out of LM35 is shown in the figure below.

Features:

Calibrated directly in Celsius (Centigrade)

Linear + 10-mV/°C scale factor

0.5°C ensured accuracy (at 25°C)

Rated for full −55°C to 150°C range

Suitable for remote applications

Low-cost due to wafer-level trimming

Operates from 4 V to 30 V

Less than 60-μA current drain

Low self-heating, 0.08°C in still air

Non-linearity only ±¼°C typical

Low-impedance output, 0.1 Ω for 1-mA load

You can download the datasheet from the below file.

Step 2: Hardware Required and Circuit Diagram

Arduino board (any)

LM35 sensor

Breadboard

Step 3: Connection to be done

Code

Temperature computing and monitoring

const int sensor=A5; // Assigning analog pin A5 to variable 'sensor'

float tempc; //variable to store temperature in degree Celsius

float tempf; //variable to store temperature in Fahreinheit

float vout; //temporary variable to hold sensor reading

void setup() {

pinMode(sensor,INPUT); // Configuring sensor pin as input

Serial.begin(9600);

}

void loop() {

vout=analogRead(sensor); //Reading the value from sensor

vout=(vout*500)/1023;

tempc=vout; // Storing value in Degree Celsius

tempf=(vout*1.8)+32; // Converting to Fahrenheit

Serial.print("in DegreeC=");

Serial.print("\t");

Serial.print(tempc);

Serial.print(" ");

Serial.print("in Fahrenheit=");

Serial.print("\t");

Serial.print(tempf);

Serial.println();

delay(500); //Delay of 1 second for ease of viewing }

Credits

SURYATEJA

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Monitoring Temperature Using a Temperature Sensor

Things used in this project

Hardware components

Software apps and online services

Story

Step 1: Introduction about the Analog Temperature Sensor

Step 2: Hardware Required and Circuit Diagram

Step 3: Connection to be done

Schematics

Temperature computing and monitoring

Code

Temperature computing and monitoring

Credits

SURYATEJA

Comments

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Monitoring Temperature Using a Temperature Sensor

Monitoring Temperature Using a Temperature Sensor

Things used in this project

Hardware components

Software apps and online services

Story

Step 1: Introduction about the Analog Temperature Sensor

Step 2: Hardware Required and Circuit Diagram

Step 3: Connection to be done

Schematics

Temperature computing and monitoring

Code

Temperature computing and monitoring

Credits

SURYATEJA

Comments

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