Arduino projekt - melodija ob premikih

#include <Wire.h>
#include <MPU6050.h>
#include <LowPower.h>

#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
#define REST      0

const int MPU_addr = 0x68;  // I2C address of the MPU-6050
int buzzer = 8;  // Pin for the buzzer
volatile bool motionDetected = false;

void setup() {
  Wire.begin();
  Serial.begin(9600);
  pinMode(buzzer, OUTPUT);  // Setup the buzzer pin as output
  pinMode(2, INPUT);        // Setup pin 2 for the interrupt input

  // Initialize MPU6050
  Wire.beginTransmission(MPU_addr);
  Wire.write(0x6B);  // PWR_MGMT_1 register
  Wire.write(0);     // Set to zero (wakes up the MPU-6050)
  Wire.endTransmission(true);

  // Setup interrupt for motion detection
  setupMPU6050Interrupt();

  // Attach interrupt to pin 2
  attachInterrupt(digitalPinToInterrupt(2), wakeUp, RISING);
}

void loop() {
  // Enter low power mode
  Serial.println("Entering low power mode");
  LowPower.powerDown(SLEEP_FOREVER, ADC_OFF, BOD_OFF);

  if (motionDetected) {
    motionDetected = true;
    Serial.println("Motion detected, playing melody");
    playMelody();
  }
}

void wakeUp() {
  motionDetected = true;
}

void setupMPU6050Interrupt() {
  // Enable the MPU-6050's interrupt on motion detection
  Wire.beginTransmission(MPU_addr);
  Wire.write(0x38);  // INT_ENABLE register
  Wire.write(0x40);  // Enable motion interrupt
  Wire.endTransmission(true);

  // Configure the motion detection
  Wire.beginTransmission(MPU_addr);
  Wire.write(0x1C);  // ACCEL_CONFIG register
  Wire.write(0x10);  // Set accelerometer sensitivity to +/- 8g
  Wire.endTransmission(true);

  Wire.beginTransmission(MPU_addr);
  Wire.write(0x1F);  // MOT_THR register
  Wire.write(20);    // Set motion detection threshold
  Wire.endTransmission(true);

  Wire.beginTransmission(MPU_addr);
  Wire.write(0x20);  // MOT_DUR register
  Wire.write(40);    // Set motion detection duration
  Wire.endTransmission(true);

  Wire.beginTransmission(MPU_addr);
  Wire.write(0x69);  // MOT_DETECT_CTRL register
  Wire.write(0x15);  // Enable motion detection
  Wire.endTransmission(true);
}

void playMelody() {
  int tempo = 240;  // Change this to make the song slower or faster
  int melody[] = {
    NOTE_E5, 8, NOTE_D5, 8, NOTE_FS4, 4, NOTE_GS4, 4,
    NOTE_CS5, 8, NOTE_B4, 8, NOTE_D4, 4, NOTE_E4, 4,
    NOTE_B4, 8, NOTE_A4, 8, NOTE_CS4, 4, NOTE_E4, 4,
    NOTE_A4, 2,
  };

  int notes = sizeof(melody) / sizeof(melody[0]) / 2;
  int wholenote = (60000 * 4) / tempo;
  int divider = 0, noteDuration = 0;

  for (int thisNote = 0; thisNote < notes * 2; thisNote += 2) {
    divider = melody[thisNote + 1];
    if (divider > 0) {
      noteDuration = wholenote / divider;
    } else if (divider < 0) {
      noteDuration = wholenote / abs(divider);
      noteDuration *= 1.5;  // Increases the duration in half for dotted notes
    }

    tone(buzzer, melody[thisNote], noteDuration * 0.9);
    delay(noteDuration);
    noTone(buzzer);
  }
}