//Date: 04.11.2025
//Name: Rajaram Parida
//Redg: 2241016203
//Section: 28
//Exp. No.: 3

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

#define DHTPIN 2
#define DHTTYPE DHT22
#define LM35 A0

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

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

void loop() {
  int sensorValue = analogRead(LM35);
  float voltage = (sensorValue * 5.0) / 1024.0;
  float lm35Temp = voltage * 100;
  float dhtTemp = dht.readTemperature();
  float humidity = dht.readHumidity();

  lcd.setCursor(0, 0);
  lcd.print("LM35: ");
  lcd.print(lm35Temp);
  lcd.print("C ");

  lcd.setCursor(0, 1);
  lcd.print("DHT:");
  lcd.print(dhtTemp);
  lcd.print("C ");
  lcd.print(humidity);
  lcd.print("%");

  Serial.print("LM35: ");
  Serial.print(lm35Temp);
  Serial.print(" C | DHT11: ");
  Serial.print(dhtTemp);
  Serial.print(" C | Humidity: ");
  Serial.println(humidity);
  
  delay(2000);
}