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

#define DHTPIN 2         // DHT22 pin
#define MOISTURE_PIN_1 A0 // First potentiometer for soil moisture
#define MOISTURE_PIN_2 A1 // Second potentiometer for another soil moisture
#define LED_PIN 3        // LED pin
#define BUZZER_PIN 4     // Buzzer pin

DHT dht(DHTPIN, DHT22);
LiquidCrystal_I2C lcd(0x27, 16, 2); // Adjust the address as necessary

void setup() {
  Serial.begin(9600);
  dht.begin();
  lcd.begin(16, 2); // Set the number of columns and rows
  lcd.backlight();
  
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
}

void loop() {
  // Read DHT22
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  // Read soil moisture
  int moistureLevel1 = analogRead(MOISTURE_PIN_1);
  int moistureLevel2 = analogRead(MOISTURE_PIN_2);

  // Display readings on LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(t);
  lcd.print(" C");

  lcd.setCursor(0, 1);
  lcd.print("Moisture 1: ");
  lcd.print(moistureLevel1);

  // Alerts
  if (moistureLevel1 < 300 || moistureLevel2 < 300) {
    digitalWrite(LED_PIN, HIGH);
    tone(BUZZER_PIN, 1000);
  } else {
    digitalWrite(LED_PIN, LOW);
    noTone(BUZZER_PIN);
  }

  // Wait before the next loop
  delay(2000);
}