#include "Ultrasonic.h"
#include <Servo.h>
#include <LiquidCrystal_I2C.h>
#include <Wire.h>

Servo myservo;

Ultrasonic ultrasonic(13,12);
int distance;
const int buzzerPin = 11;
int Led_red=2 ;
LiquidCrystal_I2C lcd(0x27, 16, 2); // Adresse I2C et dimensions du LCD (changez selon votre écran)

void setup() {
  Serial.begin(9600);
    pinMode(Led_red ,OUTPUT);
myservo.attach(9);
  lcd.begin(16,2);

}

void loop() {

  // put your main code here, to run repeatedly:
 distance = ultrasonic.read(CM);
 Serial.print("Distance in CM:");
 Serial.println(distance);
 delay(1000);
 

 if(distance < 100){
        lcd.clear();
   tone(buzzerPin, 400, 500); 
digitalWrite(Led_red,HIGH);
    lcd.print("OPEN");
          lcd.setCursor(0, 1);
          unlockDoor();
  }
  else {  
          lcd.clear();
noTone(buzzerPin); // Arrête le son
digitalWrite(Led_red,LOW);
    lcd.print("Close");
          lcd.setCursor(0, 1);


      }


}
void unlockDoor() {
  myservo.write(90); // Déverrouiller la porte
  delay(5000);
  myservo.write(0); // Revenir à la position initiale
    delay(2000);

}