The Serial Monitor will tell whether the numerical-key inputted to the keypad is correct or not. To activate and deactivate the lock, the user must press * and then the secret key, followed by #.

We are excited to introduce the all-new Arduino Nano ESP32 – a powerful and versatile IoT development board that opens up a world of possibilities. This feature-packed board combines the ESP32-S3 with ...

While the Arduino family of boards connect to your computer using a USB virtual serial port, the ATmega ones have an actual serial connection on-board.