change

// How to Make an Arduino Keypad Lock
// Jlaservideo.com

#include <Servo.h>
#include <Keypad.h>

Servo ServoMotor;
char* password = "158";  // change the password here, just pick any 3 numbers
int position = 0;
long x = 0;
int rot = 180;
const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};

byte rowPins[ROWS] = { 8, 7, 6, 9 };
byte colPins[COLS] = { 5, 4, 3, 2 };
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
int RedpinLock = 12;
int GreenpinUnlock = 13;

void setup()
{
Serial.begin(9600);
pinMode(RedpinLock, OUTPUT);
pinMode(GreenpinUnlock, OUTPUT);
ServoMotor.attach(11);
LockedPosition(true);
}

void loop()
{
  char key = keypad.getKey();
  if(key) {
    Serial.println(key);
  }
  if (key == '*' || key == '#')
  {
    position = 0;
    LockedPosition(true);
  }
  if (key == password[position])
  {
    position ++;
  }
  if (position > 3)
  {
    LockedPosition(false);
  }
  else
  {
    Serial.println(position);
    x++;
    if(x > 100000)
    {
      x = 0;
    }
    spin(x);
  }
}

void spin(long i){
  if(i == 0)
  {
    ServoMotor.write(rot);
    if(rot == 180)
    {
      rot = 0;
    }
    else{
      rot = 360;
    }
  }
}
void LockedPosition(int locked)
{
if (locked)
{
digitalWrite(RedpinLock, HIGH);
digitalWrite(GreenpinUnlock, LOW);
ServoMotor.write(11);
}
else
{
digitalWrite(RedpinLock, LOW);
digitalWrite(GreenpinUnlock, HIGH);
ServoMotor.write(0);
delay(1200);
ServoMotor.write(180);
delay(800);
ServoMotor.write(0);
delay(800);
ServoMotor.write(90);
delay(800);
ServoMotor.write(135);
delay(800);
ServoMotor.write(30);
delay(800);
ServoMotor.write(0);
delay(800);
delay(3000);
delay(3000);
}
}