Interface Temperature Sensor (LM35) with Arduino and display the temperature Centigrade and Fahrenheit) on LCD

 

Source code

# include "LiquidCrystal.h"

const int rs = 2, en = 3, d4 = 4, d5 = 5, d6 = 6, d7 = 7;

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

float temp;    // to include LM 35 sensor

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

float tempf;  //variable to store temperature in Fahreinheit

void setup() {

Serial.begin(9600);

analogReference(INTERNAL);

lcd.begin (16,2);     // the codes written here is to run the programme once

lcd.setCursor(0, 0);

lcd.print("   Made by    ");

lcd.setCursor(0, 1);

lcd.print("   Jeet.org   ");

delay (100);

lcd.clear();    //Let system settle

}

void loop() {

temp = analogRead(A1);

//temp = temp * 0.48828125;  //temp=temp*(5.0/1023.0)*100;

temp=temp*1100/(1024*10);

tempc=temp; // Storing value in Degree Celsius

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

lcd.print("In DegreeC= ");

lcd.print(temp);

lcd.println("*C");

lcd.setCursor(0,1);

lcd.print("In Fahrenheit=");

lcd.print(tempf);

delay(500);

lcd.clear(); //Let system settle

}

Result: