#include <LiquidCrystal.h>

LiquidCrystal lcd(7, 8, 6, 5, 4, 3);

#define PIR_PIN 12
#define RELAY1_PIN 9
#define RELAY2_PIN 10
#define RELAY3_PIN 11

void setup() {
  lcd.begin(16, 2);
  lcd.print("System Ready");

  pinMode(PIR_PIN, INPUT);
  pinMode(RELAY1_PIN, OUTPUT);
  pinMode(RELAY2_PIN, OUTPUT);
  pinMode(RELAY3_PIN, OUTPUT);

  digitalWrite(RELAY1_PIN, LOW);
  digitalWrite(RELAY2_PIN, LOW);
  digitalWrite(RELAY3_PIN, LOW);
  
  Serial.begin(9600);
  Serial.println("System Ready");
}

void loop() {
  int motionDetected = digitalRead(PIR_PIN);

  if (motionDetected == HIGH) {
    lcd.clear();
    lcd.print("Welcome to AVV!");
    Serial.println("Motion detected!");

    digitalWrite(RELAY1_PIN, HIGH);
    delay(1000);

    digitalWrite(RELAY2_PIN, HIGH);
    delay(1000);

    digitalWrite(RELAY3_PIN, HIGH);
    delay(1000);

    delay(2000);

    digitalWrite(RELAY3_PIN, LOW);
    delay(500);

    digitalWrite(RELAY2_PIN, LOW);
    delay(500);

    digitalWrite(RELAY1_PIN, LOW);
    delay(500);

    lcd.clear();
    lcd.print("System Ready");
  }

  delay(1000);
}