#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define ADC_VREF_mV 5000.0 // in millivolt
#define ADC_RESOLUTION 1024.0
#define PIN_LM35 A0

LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
}

void loop() {
  // get the ADC value from the temperature sensor
  int adcVal = analogRead(PIN_LM35);

  // convert the ADC value to voltage in millivolt
  float milliVolt = adcVal * (ADC_VREF_mV / ADC_RESOLUTION);

  // convert the voltage to the temperature in Celsius
  float tempC = milliVolt / 10;

  // print the temperature in the Serial Monitor:
  Serial.print("Temperature: ");
  Serial.print(tempC);
  Serial.println("°C");

  // print the temperature on the LCD:
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Temperature:");
  lcd.setCursor(0,1);
  lcd.print(tempC);
  lcd.print(" C");

  lcd.setCursor(0,3);
  lcd.println( "project by arvind");
  //lcd.print(" C");
  
  delay(1000);
}