#include <Servo.h>
#include <LiquidCrystal.h>

int t=2;
int e=10;
int p=9;
int Rs=12,En=11,D4=7,D5=6,D6=5,D7=4;
LiquidCrystal lcd(Rs,En,D4,D5,D6,D7);
Servo myservo;
  
void setup() {
  // put your setup code here, to run once:
  lcd.begin(16,2);
  Serial.begin(9600);
  myservo.attach(3);
  pinMode(t, OUTPUT);
  pinMode(e, INPUT);
  pinMode(p, INPUT);
}

void loop() 
{
  // put your main code here, to run repeatedly:
 int s=digitalRead(p);
  if (s==HIGH)
  { 
    lcd.clear();
    digitalWrite(t, HIGH);
    delay(2);
    digitalWrite(t,LOW);
    delay(10);
    digitalWrite(e,HIGH);
    delay(10);

    int duration= pulseIn(e,HIGH);
    int distance= duration*(0.034/2);

    lcd.setCursor(1,0);
    lcd.print("Motion Detected");
    lcd.setCursor(2,1);
    lcd.print(distance);
    lcd.print("cm Away!");
   
    for (int i=90;i>0; i--)
    {
     myservo.write(i);
     delay(10);
    }
    myservo.write(0);
    delay(4000);
    for (int i=0; i>90; i++)
    {
     
     myservo.write(i);
     delay(10);
    }
    myservo.write(90);    
  }
 else
   {
    lcd.setCursor(0,0);
    lcd.print("Motion Not Detected");
    lcd.setCursor(2,1);
    lcd.print("Door Locked!");
    delay(500);
    
   }
  }