#include <ESP32Servo.h>
#include <LiquidCrystal_I2C.h>
#define SERVO_PIN 14 
#define PIR_PIN 25   
bool motionDetected = false;
bool doorLocked = true;  
Servo doorLock;
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);
void setup() {
  Serial.begin(115200);
  pinMode(17, OUTPUT);
  Serial.println("Hello, ESP32!");
  pinMode(PIR_PIN, INPUT); 
  doorLock.attach(SERVO_PIN);
  doorLock.write(0);
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.println("welcome");
  Serial.println("doorlock");
}
void loop() {
  motionDetected = digitalRead(PIR_PIN);
  if (motionDetected) {
      if(doorLocked){
        digitalWrite(17, HIGH);
         unlockDoor();
      }
   else{
        lockDoor();
      }  
  }
 delay(200);
}
void unlockDoor() {
  doorLocked = false;
  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.print("Motion Detected");
  LCD.setCursor(0, 1);
  LCD.print("Door Unlocked");
  Serial.println("door Unlock");
  doorLock.write(90);
  delay(5000);             
  doorLocked = true;
  lockDoor();
}
void lockDoor() {
  doorLock.write(0);
  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.print("Door Locked");
  Serial.println("door lock");
  digitalWrite(17, LOW);
}