#include <Servo.h>
Servo myservo; 
int sudut;  
int kondisi;

#include <LiquidCrystal_I2C.h> 
LiquidCrystal_I2C lcd(0x27, 16, 2); 
void servo();

#define mer 52
#define k 51
#define h 50

#include <Keypad.h>

const int ROW_NUM = 4; //four rows
const int COLUMN_NUM = 4; //four columns

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

byte pin_rows[ROW_NUM] = {2, 3, 4, 5}; //connect to the row pinouts of the keypad
byte pin_column[COLUMN_NUM] = {6, 7, 8, 9}; //connect to the column pinouts of the keypad
Keypad keypad = Keypad( makeKeymap(keys), pin_rows, pin_column, ROW_NUM, COLUMN_NUM );
void pw();
String password = "1234";
String mypassword;
int counter = 0;
void ngulangin();

#include <RTClib.h>
RTC_DS3231 rtc;
char daysOfTheWeek[7][12] = {
  "Sunday",
  "Monday",
  "Tuesday",
  "Wednesday",
  "Thursday",
  "Friday",
  "Saturday"
};

#include <TM1637Display.h>
#define CLK 23
#define DIO 25
TM1637Display display = TM1637Display(CLK, DIO);

void setup() {
Serial.begin(9600);
myservo.attach(53); 
lcd.init(); 
lcd.backlight(); 
pinMode(mer,OUTPUT);
pinMode(k,OUTPUT);
pinMode(h,OUTPUT);
if (! rtc.begin()) 
{
    Serial.println("Couldn't find RTC");
    Serial.flush();
    while (1);
}
}

void loop() {
  while(kondisi == 0)
  {
  lcd.clear(); 
  digitalWrite(mer, HIGH);    
  digitalWrite(k, HIGH);  
  digitalWrite(h, HIGH);  
  delay(500);
  digitalWrite(mer, LOW);    
  digitalWrite(k,LOW);  
  digitalWrite(h, LOW);   
  delay(500);
  digitalWrite(mer, HIGH);    
  digitalWrite(k, HIGH);  
  digitalWrite(h, HIGH);  
  delay(500);
  digitalWrite(mer, LOW);    
  digitalWrite(k,LOW);  
  digitalWrite(h, LOW);   
  delay(500);
  digitalWrite(mer, HIGH);    
  digitalWrite(k, HIGH);  
  digitalWrite(h, HIGH);  
  delay(500);
  digitalWrite(mer, LOW);    
  digitalWrite(k,LOW);  
  digitalWrite(h, LOW); 
  DateTime now = rtc.now();
  display.setBrightness(7);
  int displaytime = (now.hour() * 100) + now.minute();
  display.showNumberDecEx(displaytime, 0b11100000, true);
  Serial.print("Date & Time: ");
  Serial.print(now.year(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.print(now.day(), DEC);
  Serial.print(" (");
  Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
  Serial.print(") ");
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  Serial.println(now.second(), DEC);
  delay(1);
  lcd.setCursor(1, 0);    
  lcd.print("Hai,Masukan PW");       
  kondisi = 1; 
  }
          
while(kondisi == 1)
  {
   char key = keypad.getKey();
  if (key){
    Serial.println(key);
    counter = counter + 1; 
    lcd.setCursor(counter, 1);
    lcd.print("*");
  }
  if (key == '1')
  {
 
    mypassword = mypassword + 1;   
  }
  
    if (key == '2')
  {
 
    mypassword = mypassword + 2;  
  }
  
  if (key == '3')
  {
 
    mypassword = mypassword + 3; 
  }
  
   if (key == '4')
  {
  
    mypassword = mypassword + 4;  
  }
  
  if (key == '5')
  {
  
    mypassword = mypassword + 5;
  }
  
   if (key == '6')
  {
   
    mypassword = mypassword + 6; 
  }
  if (key == '7')
  {
 
    mypassword = mypassword + 7; 
  }
 
   if (key == '8')
  {
 
    mypassword = mypassword + 8; 
  }
  
  if (key == '9')
  {
 
    mypassword = mypassword + 9;
  }
             
  if (key == '0')
  {
 
    mypassword = mypassword + 0; 
  }
  if (key == '#')
  {
    if ( password == mypassword )
  {
  lcd.clear();
  lcd.setCursor(0, 0);    
  lcd.print("pw Benar");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0, 0);    
  lcd.print("Open Door...");
  delay(500);
  myservo.write(180);
  }
  else 
  { 
  lcd.clear();
  mypassword = "0";
  Serial.println(mypassword);
  lcd.setCursor(0, 0);    
  lcd.print("pw Salah");
  delay(500);
  kondisi = 0;
  }
 }
}

while (kondisi == 2)
{
lcd.clear();

}

}

void servo()
{
 sudut = analogRead(A0);         
  sudut = map(sudut, 0, 1023, 0, 180); 
  myservo.write(sudut);                  
  delay(15); 
}