#include <LiquidCrystal.h>
#define bazzer_pin 13
#define red_pin 12
#define green_pin 11
#define sig_pin A0
#define relay_pin 10

int sig;
int sig_par;

LiquidCrystal lcd(9,8,7,6,5,4);

void setup()
{
  lcd.begin(16,2);
  lcd.print("Welcome!");
  pinMode(bazzer_pin, OUTPUT);
  pinMode(red_pin, OUTPUT);
  pinMode(green_pin, OUTPUT);
  pinMode(relay_pin, OUTPUT);
  delay(2000);
}

void loop()
{
  
  sig = analogRead(sig_pin);
  
  sig_par = sig / 1023 * 100;

  lcd.setCursor(0,0);
  lcd.print("Soil moisture:-");
  lcd.setCursor(0,1);
  lcd.print(sig);
  if(sig <= 500){
   tone(bazzer_pin, 1000);
    digitalWrite(red_pin, HIGH);
    digitalWrite(green_pin, LOW);
    digitalWrite(relay_pin, HIGH);
    lcd.setCursor(8,1);
    lcd.print("WARNING!");
  }else{
    digitalWrite(green_pin, HIGH);
    digitalWrite(red_pin, LOW);
    noTone(bazzer_pin);
    digitalWrite(relay_pin, LOW);
    lcd.setCursor(8,1);
    lcd.print(" ");
    lcd.setCursor(9,1);
    lcd.print(" ");
    lcd.setCursor(10,1);
    lcd.print(" ");
    lcd.setCursor(11,1);
    lcd.print(" ");
    lcd.setCursor(12,1);
    lcd.print(" ");
    lcd.setCursor(13,1);
    lcd.print(" ");
    lcd.setCursor(14,1);
    lcd.print(" ");
    lcd.setCursor(15,1);
    lcd.print(" ");
  }
  delay(1000);
  
}