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

LiquidCrystal_I2C lcd(0x27, 16, 2);  // Address may vary, check with your specific LCD

const int pirPins[] = {2, 3, 4, 5, 6}; // Array of PIR sensor pins
const int ledPins[] = {7, 8, 9, 10, 11}; // Array of LED pins

void setup() {
  Serial.begin(9600);
  lcd.begin(16, 2);  // Initialize LCD
  lcd.backlight();   // Turn on the backlight
  lcd.print("Motion: ");
  
  for (int i = 0; i < 5; i++) {
    pinMode(pirPins[i], INPUT);
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  for (int i = 0; i < 5; i++) {
    int motion = digitalRead(pirPins[i]);

    if (motion == HIGH) {
      Serial.print("Motion detected by Sensor ");
      Serial.println(i + 1);
      
      lcd.setCursor(8, 0);  // Set cursor to show sensor number
      lcd.print(i + 1);     // Display sensor number on LCD
      
      // Turn on the corresponding LED solid
      digitalWrite(ledPins[i], HIGH);

      // Flicker the other LEDs continuously
      for (int j = 0; j < 5; j++) {
        if (j != i) {
          flickerLED(ledPins[j]);
        }
      }
    }
  }
}

void flickerLED(int pin) {
  // Flicker the LED by turning it on and off quickly
  digitalWrite(pin, HIGH);
  delay(50);
  digitalWrite(pin, LOW);
  delay(50);
}