capston2/capstone.ino at main · offzeroma1/capston2 · GitHub

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#include <Keypad.h>

char* password = "123";  // change the password here, just pick any 3 numbers
int position = 0;
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] = { 9, 8, 7, 6 };
byte colPins[COLS] = { 5, 4, 3, 2 };

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
int Lock = 13;

void setup()
{
  pinMode(Lock, OUTPUT);
  LockedPosition(true);
}

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

  delay(100);
}


void LockedPosition(int locked){
  if (locked){
    digitalWrite(Lock, LOW);
  }
  else{
    digitalWrite(Lock, HIGH);
  }
}