#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

const int soilMoisture = A0;
const int RELAY= 7;
int sensorValue = 0;
int moisturePercent = 0;
int Led=12;

void setup()
{
  lcd.init();
  lcd.backlight();
  lcd.clear();
  pinMode(RELAY, OUTPUT);
  pinMode(Led, OUTPUT);
}

void loop()
{
  sensorValue = analogRead(soilMoisture);
  moisturePercent = map(sensorValue, 0, 1020, 100, 0);
  lcd.setCursor(0, 0);
  lcd.print(moisturePercent);
  lcd.print(" %   ");
  if (moisturePercent < 40) 
  {
    lcd.setCursor(0, 1);
     lcd.print("Watering       ");
     digitalWrite(RELAY, HIGH);
     digitalWrite(Led, HIGH);
  }
  else
  {
    digitalWrite(RELAY, LOW);
    lcd.setCursor(0, 1);
    lcd.print("Not watering    ");
    digitalWrite(Led, LOW);
  }
}