Objective:

         To measure the amount of temperature present in the atmosphere

Components Required

• Arduino Uno
• Temperature Sensor (LM35)

Connection Diagram

Program

int sensorPin = A0;

int sensorValue = 0;

void setup()

{

pinMode(sensorPin, INPUT);

Serial.begin(9600);

}

void loop()

{

sensorValue = analogRead(sensorPin);

float temperatureC=sensorPin/2.048;

float temperatureF= ((temperatureC ) * 9.0 / 5.0) + 32.0;

Serial.println(Temperature (F));

Serial.print(temperatureF);

Serial.println(Temperature(C));

Serial.print(temperatureC);

}

Working

         The Temperature sensor is nothing but a thermistor whose resistance changes in accordance with the temperature. The change in resistance varies the amount of current flow through it and there by the voltage also.

Output

Room Temperature : 28 C