#include <DHT.h>
#include <Servo.h>
#include <LiquidCrystal.h>

#define DHTPIN 4 // Pin for DHT11 sensor
#define DHTTYPE DHT22 // DHT11 sensor type

DHT dht(DHTPIN, DHTTYPE);

Servo servo; // Create servo object
int servoPin = 5; // Pin for servo motor
int openAngle = 90; // Angle to open window
int closeAngle = 0; // Angle to close window

int heaterPin = 7; // Pin for heater LED
int sprinklerPin = 6; // Pin for sprinkler LED
int lightPin = A1; // Pin for light sensor
int lightVal; // Variable to store light value

LiquidCrystal lcd(13,12,11,10,9,8); // Pins for LCD display

void setup() {
  // Initialize serial communication and LCD display
  Serial.begin(9600);
  lcd.begin(16, 2);

  // Attach servo motor to pin and set to closed position
  servo.attach(servoPin);
  servo.write(closeAngle);

  // Set pins for LED output
  pinMode(heaterPin, OUTPUT);
  pinMode(sprinklerPin, OUTPUT);

  // Start DHT11 sensor
  dht.begin();
}

void loop() {
  // Read temperature, humidity, and light levels
  float temp = dht.readTemperature();
  float humid = dht.readHumidity();
  lightVal = analogRead(lightPin);

  // If temperature is below 24C, turn on heater LED. If temperature is above 29C, open servo motor to let hot air out
  if (temp < 24) {
    digitalWrite(heaterPin, HIGH);
  } else {
    digitalWrite(heaterPin, LOW);
  }
  if (temp > 29) {
    servo.write(openAngle);
  } else {
    servo.write(closeAngle);
  }

  // If humidity is below 50%, turn on sprinkler LED
  if (humid < 50) {
    digitalWrite(sprinklerPin, HIGH);
  } else {
    digitalWrite(sprinklerPin, LOW);
  }

  // Display temperature, humidity, and light level on LCD display
  lcd.setCursor(0, 0);
  lcd.print("T:");
  lcd.print(temp);
  lcd.print("C");
  lcd.setCursor(0, 1);
  lcd.print("Humid:");
  lcd.print(humid);
  lcd.print("%");
  lcd.setCursor(9, 0);
  lcd.print(" Li:");
  lcd.print(lightVal);
  delay(1000);
}