Timer / count down thing

Hi
sry :slight_smile: have marked it with ****
I dont have any idea how to do it

/*  Keypadtest.pde
 *
 *  Demonstrate the simplest use of the  keypad library.
 *
 *  The first step is to connect your keypad to the
 *  Arduino  using the pin numbers listed below in
 *  rowPins[] and colPins[]. If you want to use different
 *  pins then  you  can  change  the  numbers below to
 *  match your setup.
 *
 */
#include <Keypad.h>
#include <Password.h>
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);


char kode[5];
char start[5] = {'1','2','3','4','5'};
char slut[5] = {'0','0','0','0','0'};
int i = 0;
int f = 0;
int t = 0;
char time[5];
char tid[5];
int a = 5;


//Password password = Password( "9999" );
//Password admin = Password( "0000" );
//Password bruger1 = Password( "1111" );
//Password bruger2 = Password( "2222" );
 
const byte ROWS = 4; // Four rows
const byte COLS = 3; // Three columns
// Define the Keymap
char keys[ROWS][COLS] = {
  {'1','2','3'},
  {'4','5','6'},
  {'7','8','9'},
  {'*','0','#'}
};
// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte rowPins[ROWS] = { 10, 9, 8, 14 };
// Connect keypad COL0, COL1 and COL2 to these Arduino pins.
byte colPins[COLS] = { 13, 12, 11 }; 

// Create the Keypad
Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup()
{
  Serial.begin(9600);
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  
}

void loop(){
  char key = kpd.getKey();

if(t == 1)         //Hvis admin pass er trykket og godkendt
  {

******* the time that is entered is counting down, But if you enter the rigth code (00000)
it stops and go to checkPassword() *****
              
   }

 if (t == 0)        //Starten af programmet - nulstillet.
 {
  lcd.setCursor(0, 0); 
  lcd.print("Tast Start kode");
  }
 else              //Hvis Der er tastet admin kode.
 {
  lcd.setCursor(2, 0); 
  lcd.print("Tast Kodeord");
 }


  if(key && t != 2 && f != 3)    // Hvis der trykkes på kaypaddet og bomben er "armed"
  {

    
    kode[i] = key; //store entry into array
    i++;
    Serial.println(key); //print keypad character entry to serial port
    
    lcd.setCursor(a + i, 1);
    lcd.print(key);
    Serial.println(a , i);
    
    
    if (key=='*')
    {
	Serial.println("Reset");
	i=0; //reset i
        a=5;
        lcd.clear();
    }

    if (i == 5) //if 4 presses have been made
    {
	checkPassword();

	{
	 i=0;
         a=5;
         lcd.clear();
	}
    }
   }
   if ( f == 3 || t == 2 )          // Hvis der forsøges mere end 3 gange eller tiden er gået.
   {
     Serial.println( "booom");
     lcd.clear();
     lcd.setCursor(3, 0);
     lcd.print("BOOOOOOOOM");
     f = 0;
     t = 0;
     delay (10000);
     Serial.println( "igen");
     lcd.clear();
    
   }
   
     
  
}

void checkPassword(){
  

  i=0;
 if ( t == 0 && kode[0] == start[0] &&      // tjekker admin kode og staret programmet i "armed"
      kode[1] == start[1] &&
      kode[2] == start[2] &&
      kode[3] == start[3] &&
      kode[4] == start[4] )
      {
        Serial.println("Start");
        t = 1;
        f = 0;
        lcd.clear();

******* press the time.. finish with #  *****

            
        lcd.print("     Armed");
        delay(2000);
        lcd.clear();
      }
      
      
 else if (t == 1 && kode[0] == slut[0] &&
      kode[1] == slut[1] &&
      kode[2] == slut[2] &&
      kode[3] == slut[3] &&
      kode[4] == slut[4] )
      {
        Serial.println("STOP");
        t = 0;
        f = 0;
       lcd.clear();
       lcd.print("    Disarmed");
       delay(1500);
       lcd.clear();
       }
 else
 {
   if ( t == 1 )            // Hvis programmet er startet og koden er forkert.
   {
   Serial.println("Forkert");
   f++;
   lcd.clear();
   lcd.print("Forkert kode");
   lcd.setCursor(0,1);
   delay(1000);
   lcd.clear();
   lcd.print("Forsøg Tilbage");
   lcd.setCursor(8,1);
   lcd.print(f);
   delay(1000);
   lcd.clear();
   }
   
 }

}