Projeto 4: Controlo do Buzzer com o Arduino 

Neste projeto vou mostrar como utilizar, de forma muito simples, o Buzzer (5V), com o Arduino. Para tal, vou recorrer a um tema muito conhecido do cinema, associado ao agente James Bond 007.

Buzzer 5V

O esquema:

O vídeo:

O código:

#include "pitches.h"
#define NO_SOUND 0 // make the rests in music

//array of notes
int melody[] = {
  /*NOTE_G4,NOTE_G4,NO_SOUND,NOTE_G4,NOTE_G4,NO_SOUND,NOTE_G4,NOTE_G4,NOTE_G4,NOTE_G4,NOTE_G4,
   NOTE_B3,NOTE_G3,NOTE_C4,NOTE_G3,NOTE_CS4,NOTE_G3,NOTE_C4,NOTE_G3,NOTE_B3,NOTE_G3,NOTE_C4,NOTE_G3,NOTE_CS4,NOTE_G3,NOTE_C4,NOTE_G3,
   NOTE_E4,NOTE_F4,NOTE_F4,NOTE_F4,NOTE_F4,NOTE_E4,NOTE_E4,NOTE_E4,
   NOTE_E4,NOTE_G4,NOTE_G4,NOTE_G4,NOTE_G4,NOTE_E4,NOTE_E4,NOTE_E4,*/
   //Introduction
  NOTE_E4,NOTE_F4,NOTE_F4,NOTE_F4,NOTE_F4,NOTE_E4,NOTE_E4,NOTE_E4,
  NOTE_E4,NOTE_G4,NOTE_G4,NOTE_G4,NOTE_G4,NOTE_E4,NOTE_E4,NOTE_E4,
  NOTE_E4,NOTE_F4,NOTE_F4,NOTE_F4,NOTE_F4,NOTE_E4,NOTE_E4,NOTE_E4,
  NOTE_E4,NOTE_G4,NOTE_G4,NOTE_G4,NOTE_G4,NOTE_E4,NOTE_E4,NOTE_E4,
  NOTE_DS5,NOTE_D5,NOTE_B4,NOTE_A4,NOTE_B4,
  NOTE_E4,NOTE_G4,NOTE_DS5,NOTE_D5,NOTE_G4,NOTE_B4,
  NOTE_B4,NOTE_FS5,NOTE_F5,NOTE_B4,NOTE_D5,NOTE_AS5,
  NOTE_A5,NOTE_F5,NOTE_A5,NOTE_DS6,NOTE_D6,NO_SOUND
};

// note duration: 1 = whole note, 2 = half note, 4 = quarter note, 8 = eighth note, etc.
int noteDurations[] = {
  /*8,8,2,8,8,2,16,8,16,8,8,2,4,2,4,2,4,2,4,2,4,2,4,2,4,2,4,8,16,16,8,4,8,8,8,
   8,16,16,8,4,8,8,8,*/

  8,16,16,8,4,8,8,8,
  8,16,16,8,4,8,8,8,
  8,16,16,8,4,8,8,8,
  8,16,16,8,4,8,8,8,
  8,2,8,8,1,
  8,4,8,4,8,8,
  8,8,4,8,4,8,
  4,8,4,8,3
};

int pace = 1450; // change pace of music("speedy")
void setup() {
  for (int Note = 0; Note <54; Note++) {//counter of Notes (54 limit the array)
    int duration = pace/noteDurations[Note];//Adjust duration with the pace of music
    tone(8, melody[Note],duration); //Play note

// to distinguish the notes, set a minimum time between them.
    delay(duration*1.2);
  }
}

void loop() {
  //to repeat song, push reset button.
}
//

Referências:

Crie um novo separador com a designação "pitches.h" e copie o seguinte código:

/*************************************************

* Public Constants

*************************************************/


#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

#define NOTE_D2 73

#define NOTE_DS2 78

#define NOTE_E2 82

#define NOTE_F2 87

#define NOTE_FS2 93

#define NOTE_G2 98

#define NOTE_GS2 104

#define NOTE_A2 110

#define NOTE_AS2 117

#define NOTE_B2 123

#define NOTE_C3 131

#define NOTE_CS3 139

#define NOTE_D3 147

#define NOTE_DS3 156

#define NOTE_E3 165

#define NOTE_F3 175

#define NOTE_FS3 185

#define NOTE_G3 196

#define NOTE_GS3 208

#define NOTE_A3 220

#define NOTE_AS3 233

#define NOTE_B3 247

#define NOTE_C4 262

#define NOTE_CS4 277

#define NOTE_D4 294

#define NOTE_DS4 311

#define NOTE_E4 330

#define NOTE_F4 349

#define NOTE_FS4 370

#define NOTE_G4 392

#define NOTE_GS4 415

#define NOTE_A4 440

#define NOTE_AS4 466

#define NOTE_B4 494

#define NOTE_C5 523

#define NOTE_CS5 554

#define NOTE_D5 587

#define NOTE_DS5 622

#define NOTE_E5 659

#define NOTE_F5 698

#define NOTE_FS5 740

#define NOTE_G5 784

#define NOTE_GS5 831

#define NOTE_A5 880

#define NOTE_AS5 932

#define NOTE_B5 988

#define NOTE_C6 1047

#define NOTE_CS6 1109

#define NOTE_D6 1175

#define NOTE_DS6 1245

#define NOTE_E6 1319

#define NOTE_F6 1397

#define NOTE_FS6 1480

#define NOTE_G6 1568

#define NOTE_GS6 1661

#define NOTE_A6 1760

#define NOTE_AS6 1865

#define NOTE_B6 1976

#define NOTE_C7 2093

#define NOTE_CS7 2217

#define NOTE_D7 2349

#define NOTE_DS7 2489

#define NOTE_E7 2637

#define NOTE_F7 2794

#define NOTE_FS7 2960

#define NOTE_G7 3136

#define NOTE_GS7 3322

#define NOTE_A7 3520

#define NOTE_AS7 3729

#define NOTE_B7 3951

#define NOTE_C8 4186

#define NOTE_CS8 4435

#define NOTE_D8 4699

#define NOTE_DS8 4978

Espero que gostem!