After uploading the sketch, open the Arduino Serial Monitor (Tools > Serial Monitor). The sketch will automatically detect the I2C address of the connected LCD module and initialize it. You should see ...

Keypad_I2C teclado = Keypad_I2C ( makeKeymap (keys), rowPins, colPins, ROWS, COLS, 0x20 ); // llamamos a la libreria del keypad y le pasamos los parámetros, la dirección hexadecimal la podemos obtener ...

Assume that you are moving towards a complex microcontroller project bundled with blinkers, beepers, and a display panel. To link a standard 16×2 LCD directly with the microcontroller, for instance ...

Additionally, the Uno features two extra pins, a duplicate of the A4 and A5 pins (meaning, they're internally connected), that you can dedicate for I2C/TWI communication.

Circuit Diagram - Interfacing Arduino Nano and OLED Display for Tetris Game Once you have everything you need, it's time to start connecting the components and have some fun creating your game! You'll ...