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

String item;
Servo servo_11;

const byte KEYPAD_4_4_ROWS = 4;
const byte KEYPAD_4_4_COLS = 4;
char KEYPAD_4_4_hexaKeys[KEYPAD_4_4_ROWS][KEYPAD_4_4_COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte KEYPAD_4_4_rowPins[KEYPAD_4_4_ROWS] = {2, 3, 4, 5};
byte KEYPAD_4_4_colPins[KEYPAD_4_4_COLS] = {6, 7, 8, 9};
Keypad KEYPAD_4_4 = Keypad(makeKeymap(KEYPAD_4_4_hexaKeys), KEYPAD_4_4_rowPins, KEYPAD_4_4_colPins, KEYPAD_4_4_ROWS, KEYPAD_4_4_COLS);

void setup(){
  Serial.begin(9600);
  item = "";
  pinMode(13, OUTPUT);
  digitalWrite(13,HIGH);
  pinMode(12, OUTPUT);
  servo_11.attach(11);
}

void loop(){
  item = String(item) + String(String(KEYPAD_4_4.getKey()));
  Serial.println(item);
  digitalWrite(12,LOW);
  servo_11.write(90);
  delay(15);
  while (item == "123456") {
    item = String(item) + String(String(KEYPAD_4_4.getKey()));
    Serial.println(item);
    digitalWrite(12,HIGH);
    servo_11.write(0);
    delay(15);
    if (item == "123456#") {
      item = "";

    }
  }

}