#include <LiquidCrystal.h>
#include <Servo.h>
int T = 2, E = 3;
int P = 10;
int Rs = 12, En = 11, D4 = 4, D5 = 5, D6 = 6, D7 = 7;
LiquidCrystal lcd(Rs,En,D4,D5,D6,D7);
Servo myservo;

void setup() {
  Serial.begin(9600);
  pinMode(T, OUTPUT);
  pinMode(E, INPUT);
  pinMode(P, INPUT);
  myservo.attach(9);
  lcd.begin(16,2);

}

void loop() {
  int S = digitalRead(P);
  if (S==HIGH)
  {
    digitalWrite(T, LOW);
    delay(2);
    digitalWrite(T, HIGH);
    delay(10);
    digitalWrite(T, LOW);
    int duration = pulseIn(E,HIGH);
    int distance = duration * (0.034/2);
    lcd.print("Motion Detected");
    lcd.setCursor(0,1);
    lcd.print(distance);
    lcd.print(" cm away");
    lcd.print(" Open");

    for(int i=0;i<180;i++)
    {
      myservo.write(i);
      delay(100);
    }
    delay(500);
    for(int i=180;i>90;i--)
    {
      myservo.write(i);
      delay(10);
    }
  }
  else
  {
    lcd.print("No Motion");
    lcd.setCursor(0,1);
    lcd.print("Door Locked");
    delay(1000);
    lcd.clear();
  }
}