#include < Wire.h >
#include < RTClib.h >
#include < LiquidCrystal_I2C.h >
#include < Stepper.h >
#include < BluetoothSerial.h > // Incluir biblioteca BluetoothSerial
// Notas musicales y sus frecuencias
#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69