Datasheet

Chapter 4 • BOE Shield-Bot Navigation
132 • Robotics with the BOE Shield-Bot
int elementCount = sizeof(note) / sizeof(int);
Later, your for loop can use the elementCount variable to play all the notes in the array,
even if you add or delete elements:
for(int index = 0; index < elementCount; index++)
 Create, save, and run PlayAllNotesInArray.
 Open the Serial Monitor as soon as the sketch is done loading.
 Verify again that the Serial Monitor displays each note in the array as the speaker
plays it.
// Robotics with the BOE Shield – PlayAllNotesInArray
// Uses sizeof to determine number of elements in the array
// and then displays and prints each note value in the sequence.
int note[] = {1047, 1147, 1319, 1397, 1568, 1760, 1976, 2093};
void setup()
{
Serial.begin(9600);
int elementCount = sizeof(note) / sizeof(int);
Serial.print("Number of elements in array = ");
Serial.println(elementCount);
for(int index = 0; index < elementCount; index++)
{
Serial.print("index = ");
Serial.println(index);
Serial.print("note[index] = ");
Serial.println(note[index]);
tone(4, note[index], 500);
delay(750);
}
}
void loop()
{
}
Your Turn – Add Notes
 Try adding the next two notes, D7 and E7, using the frequencies (rounded down)
from the keyboard diagram. Your array can use more than one line, like this: