#include <LiquidCrystal.h>


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


const uint PIR_PIN = 15;
const uint BUZZER_PIN = 28;
const uint LED_PIN = 27;

void setup() {
    // Initialize the PIR sensor pin
    pinMode(PIR_PIN, INPUT);

    // Initialize the buzzer pin
    pinMode(BUZZER_PIN, OUTPUT);

    // Initialize the LED pin
    pinMode(LED_PIN, OUTPUT);

    // Initialize the LCD
    lcd.begin(16, 2);
    lcd.print("System Ready");

    // Initialize serial communication
    Serial.begin(9600);
}

void loop() {
    // Read the PIR sensor
    bool motionDetected = digitalRead(PIR_PIN);

    if (motionDetected) {
        // Motion detected
        digitalWrite(BUZZER_PIN, HIGH); // Turn on buzzer
        digitalWrite(LED_PIN, HIGH); // Turn on LED
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Motion detected");
        Serial.println("Motion detected");
    } else {
        // No motion detected
        digitalWrite(BUZZER_PIN, LOW); // Turn off buzzer
        digitalWrite(LED_PIN, LOW); // Turn off LED
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("No motion");
        Serial.println("No motion detected");
    }

    delay(200); // Small delay for stability
}

int main() {
    setup();
    while (true) {
        loop();
    }
}