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

// Define pins
#define sensorPin A0
#define ledPin 13

// I2C LCD Configuration
LiquidCrystal_I2C lcd(0x27, 16, 2);  // Set the I2C address and LCD dimensions

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);

  lcd.begin(16, 2);  // Initialize the LCD
  lcd.print("Soil Moisture");
}

void loop() {
  int moistureValue = analogRead(sensorPin);
  int moisturePercentage = map(moistureValue, 0, 1023, 0, 100);

  displayMoisture(moisturePercentage);

  delay(1000);
}

void displayMoisture(int moisture) {
  lcd.setCursor(0, 1);
  lcd.print("Moisture: " + String(moisture) + "%");

  // Display a warning if moisture is too low (adjust threshold as needed)
  if (moisture < 30) {
    lcd.setCursor(0, 0);
    lcd.print("Water needed!");
    digitalWrite(ledPin, HIGH);
  } else {
    lcd.setCursor(0, 0);
    lcd.print("Soil Moisture");
    digitalWrite(ledPin, LOW);
  }
}