Arduino Lab 7

Purpose:
 To make music with the piezo element.

Equipment:
Piezo element
2 wires (any colour)

Program Details:
Arduino

Time to Program and Complete:
20 mins

Results:
A lot of coding problems

Photo/Video Proof:
None right now

Program:
int speakerPin = 9;
int length = 15; 
char notes[] = "ccggaagffeeddc "; 
int beats[] = { 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 4 };
int tempo = 300;
void playTone(int tone, int duration) 
{
  for (long i = 0; i < duration * 1000L; i += tone * 2) 
  {
    digitalWrite(speakerPin, HIGH);
    delayMicroseconds(tone);
    digitalWrite(speakerPin, LOW);
    delayMicroseconds(tone);
  }
}
void playNote(char note, int duration) 
{
  char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
          int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 956 };
  for (int i = 0; i < 8; i++) 
  {
    if (names[i] == note) 
    {
      playTone(tones[i], duration);
    }
  }
}
void setup() 
{
  pinMode(speakerPin, OUTPUT);
}
void loop() 
{
  for (int i = 0; i < length; i++) 
  {
    if (notes[i] == ' ') 
    {
      delay(beats[i] * tempo);
    } 
    else 
    {
      playNote(notes[i], beats[i] * tempo);
    }
    delay(tempo / 2); 
  }
}

Program Modifications:
None

Helpful Tips:
None

References:
Aron Graca
Kyle chan