diff --git a/examples/02.Digital/toneMelody/toneMelody.ino b/examples/02.Digital/toneMelody/toneMelody.ino
index 8cc1b53..f02c0d1 100644
--- a/examples/02.Digital/toneMelody/toneMelody.ino
+++ b/examples/02.Digital/toneMelody/toneMelody.ino
@@ -17,6 +17,8 @@
 
 #include "pitches.h"
 
+int buzzerPin = 8;
+
 // notes in the melody:
 int melody[] = {
   NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
@@ -27,21 +29,23 @@ int noteDurations[] = {
   4, 8, 8, 4, 4, 4, 4, 4
 };
 
+int noteAmount = 8;
+
 void setup() {
   // iterate over the notes of the melody:
-  for (int thisNote = 0; thisNote < 8; thisNote++) {
+  for (int thisNote = 0; thisNote < noteAmount; thisNote++) {
 
     // to calculate the note duration, take one second divided by the note type.
     //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
     int noteDuration = 1000 / noteDurations[thisNote];
-    tone(8, melody[thisNote], noteDuration);
+    tone(buzzerPin, melody[thisNote], noteDuration);
 
     // to distinguish the notes, set a minimum time between them.
     // the note's duration + 30% seems to work well:
     int pauseBetweenNotes = noteDuration * 1.30;
     delay(pauseBetweenNotes);
     // stop the tone playing:
-    noTone(8);
+    noTone(buzzerPin);
   }
 }