#include int led_merah = 25;
<LiquidCrystal_I2C.h>
LiquidCrystal_12C lcd(0x)
#include <Keypad.h>
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] = {14,12,19,18};
byte colPins[COLS] = {5,4,2,15};
Keypad customKeypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

char customKey;
int number = 0;
int password = 2445;

int led_hijau = 26;
int led_merah = 25;
void setup()