#include <Servo.h>
#include <Keypad.h>
myservo;
const int MOTION_SENSOR_PIN = 2;
const byte baris = 4;
const byte kolom = 4;

char Hexa[baris][kolom]={
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};

char kunci[5];
char pin;
int hitung=0, i;

byte pinBaris [baris] = {4,5,6,7 };
byte pinKolom [kolom] = { 8, 9, 10,11};

Keypad Keypadvar = Keypad(makeKeymap(Hexa), pinBaris, pinKolom, baris, kolom);


int angle = 0;
int currentMotionState;
void setup() {
Serial.begin(9600);
myservo.attach(3);

Serial.begin(1500);
pinMode(MOTION_SENSOR_PIN, INPUT);
myservo.attach(3);

myservo.write(angle);
currentMotionState = digitalRead(MOTION_SENSOR_PIN);
}

void loop() {

char Keyvar = Keypadvar.getKey();

if (Keyvar){
  hitung++;
      kunci[hitung] = Keyvar;
           Serial.print(kunci[hitung]);
             Serial.print("  ");
               if (hitung == 4){
                   hitung=0;
                     if ((kunci[1]=='1') &&(kunci[2]=='4')&&(kunci[3]=='1') &&(kunci[4]=='2')){
                       Serial.println("Pin Anda Benar");
                         myservo.write(180);
                           delay(3000);
                             myservo.write(90);
                               delay(10);
                                 }
                                   else{
                                       Serial.println("Pin Anda Salah");
                                             }