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

// Define the pin connections
const int soilMoisturePin = 34;  // Soil moisture sensor pin
const int buzzerPin = 18;  // Buzzer pin
const int lcdAddress = 0x27;  // LCD I2C address
const int ledPin = 32;

// Initialize the LCD
LiquidCrystal_I2C lcd(lcdAddress, 16, 2);

void setup() {
  // Initialize the LCD
  lcd.init();
  lcd.backlight();
  pinMode(ledPin, OUTPUT);
  // Set up the soil moisture sensor pin as an input
  pinMode(soilMoisturePin, INPUT);

  // Set up the buzzer pin as an output
  pinMode(buzzerPin, OUTPUT);
}

void loop() {
  // Read the soil moisture value
  int soilMoisture = analogRead(soilMoisturePin);

  // Print the soil moisture value to the LCD
  lcd.setCursor(0, 0);
  lcd.print("Soil: ");
  lcd.print(soilMoisture);

  // Check if the soil moisture value is low
  if (soilMoisture < 2000) {
    // Turn on the buzzer
    digitalWrite(buzzerPin, HIGH);
    delay(300);
    digitalWrite(buzzerPin, LOW);
    delay(300);

    // Display a message on the LCD
    lcd.setCursor(0, 1);
    lcd.print("Moisture Low!");
    digitalWrite(ledPin, HIGH);
  } else {
    // Turn off the buzzer
    digitalWrite(buzzerPin, LOW);

    // Display a message on the LCD
    lcd.setCursor(0, 1);
    lcd.print("Moisture OK");
    digitalWrite(ledPin, LOW);
  }

  // Wait for a short period of time before taking the next reading
  delay(1000);
}