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

// DHT22 sensor pins
const int dhtPin1 = 2; // Replace with the actual pin connected to DHT22 sensor 1
const int dhtPin2 = 4; // Replace with the actual pin connected to DHT22 sensor 2
const int dhtPin3 = 5; // Replace with the actual pin connected to DHT22 sensor 3
const int dhtPin4 = 18; // Replace with the actual pin connected to DHT22 sensor 4

// I2C LCD display addresses
const int lcdAddress1 = 0x26; // Replace with the actual I2C address of LCD 1
const int lcdAddress2 = 0x27; // Replace with the actual I2C address of LCD 2
const int lcdAddress3 = 0x28; // Replace with the actual I2C address of LCD 3
const int lcdAddress4 = 0x29; // Replace with the actual I2C address of LCD 4

// DHT sensors
DHT dht1(dhtPin1, DHT22);
DHT dht2(dhtPin2, DHT22);
DHT dht3(dhtPin3, DHT22);
DHT dht4(dhtPin4, DHT22);

// I2C LCD displays
LiquidCrystal_I2C lcd1(lcdAddress1, 16, 2);
LiquidCrystal_I2C lcd2(lcdAddress2, 16, 2);
LiquidCrystal_I2C lcd3(lcdAddress3, 16, 2);
LiquidCrystal_I2C lcd4(lcdAddress4, 16, 2);

void setup() {
  // Start serial communication
  Serial.begin(9600);

  // Initialize DHT sensors
  dht1.begin();
  dht2.begin();
  dht3.begin();
  dht4.begin();

  // Initialize the I2C LCD displays
  lcd1.init();
  lcd2.init();
  lcd3.init();
  lcd4.init();

  // Backlight the LCD displays
  lcd1.backlight();
  lcd2.backlight();
  lcd3.backlight();
  lcd4.backlight();

  // Clear the LCD displays
  lcd1.clear();
  lcd2.clear();
  lcd3.clear();
  lcd4.clear();
}

void loop() {
  // Read data from DHT22 sensors
  float humidity1 = dht1.readHumidity();
  float temperature1 = dht1.readTemperature();
  float humidity2 = dht2.readHumidity();
  float temperature2 = dht2.readTemperature();
  float humidity3 = dht3.readHumidity();
  float temperature3 = dht3.readTemperature();
  float humidity4 = dht4.readHumidity();
  float temperature4 = dht4.readTemperature();

  // Display data on LCD 1
  lcd1.clear();
  lcd1.print("DHT1: ");
  lcd1.setCursor(0, 1);
  lcd1.print("Temp: ");
  lcd1.print(temperature1);
  lcd1.print("C Humidity: ");
  lcd1.print(humidity1);
  
  // Display data on LCD 2
  lcd2.clear();
  lcd2.print("DHT2: ");
  lcd2.setCursor(0, 1);
  lcd2.print("Temp: ");
  lcd2.print(temperature2);
  lcd2.print("C Humidity: ");
  lcd2.print(humidity2);

  // Display data on LCD 3
  lcd3.clear();
  lcd3.print("DHT3: ");
  lcd3.setCursor(0, 1);
  lcd3.print("Temp: ");
  lcd3.print(temperature3);
  lcd3.print("C Humidity: ");
  lcd3.print(humidity3);

  // Display data on LCD 4
  lcd4.clear();
  lcd4.print("DHT4: ");
  lcd4.setCursor(0, 1);
  lcd4.print("Temp: ");
  lcd4.print(temperature4);
  lcd4.print("C Humidity: ");
  lcd4.print(humidity4);

  for (int i = 0; i < 17; i++) {
    lcd1.scrollDisplayLeft();
    lcd2.scrollDisplayLeft();
    lcd3.scrollDisplayLeft();
    lcd4.scrollDisplayLeft();
    delay(700); // Adjust the scrolling speed by changing the delay
  }
  // Delay for a while before taking new readings
  delay(2000);
}