diff --git a/examples/02.Digital/toneKeyboard/toneKeyboard.ino b/examples/02.Digital/toneKeyboard/toneKeyboard.ino
index c8e73c6..64c1438 100644
--- a/examples/02.Digital/toneKeyboard/toneKeyboard.ino
+++ b/examples/02.Digital/toneKeyboard/toneKeyboard.ino
@@ -19,6 +19,8 @@
#include "pitches.h"
+int buzzerPin = 8;
+
const int threshold = 10; // minimum reading of the sensors that generates a note
// notes to play, corresponding to the 3 sensors:
@@ -37,7 +39,7 @@ void loop() {
// if the sensor is pressed hard enough:
if (sensorReading > threshold) {
// play the note corresponding to this sensor:
- tone(8, notes[thisSensor], 20);
+ tone(buzzerPin, notes[thisSensor], 20);
}
}
}
diff --git a/examples/02.Digital/toneMelody/toneMelody.ino b/examples/02.Digital/toneMelody/toneMelody.ino
index 22022dc..7afcb69 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
@@ -34,14 +36,14 @@ void setup() {
// 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);
}
}
diff --git a/examples/02.Digital/toneMultiple/toneMultiple.ino b/examples/02.Digital/toneMultiple/toneMultiple.ino
index 8d97fa7..ec3003b 100644
--- a/examples/02.Digital/toneMultiple/toneMultiple.ino
+++ b/examples/02.Digital/toneMultiple/toneMultiple.ino
@@ -15,25 +15,29 @@
https://www.arduino.cc/en/Tutorial/BuiltInExamples/toneMultiple
*/
+int buzzerOnePin = 6;
+int buzzerTwoPin = 7;
+int buzzerThreePin = 8;
+
void setup() {
}
void loop() {
// turn off tone function for pin 8:
- noTone(8);
+ noTone(buzzerThreePin);
// play a note on pin 6 for 200 ms:
- tone(6, 440, 200);
+ tone(buzzerOnePin, 440, 200);
delay(200);
// turn off tone function for pin 6:
- noTone(6);
+ noTone(buzzerOnePin);
// play a note on pin 7 for 500 ms:
- tone(7, 494, 500);
+ tone(buzzerTwoPin, 494, 500);
delay(500);
// turn off tone function for pin 7:
- noTone(7);
+ noTone(buzzerTwoPin);
// play a note on pin 8 for 300 ms:
- tone(8, 523, 300);
+ tone(buzzerThreePin, 523, 300);
delay(300);
}
diff --git a/examples/02.Digital/tonePitchFollower/tonePitchFollower.ino b/examples/02.Digital/tonePitchFollower/tonePitchFollower.ino
index 592f671..ca0422f 100644
--- a/examples/02.Digital/tonePitchFollower/tonePitchFollower.ino
+++ b/examples/02.Digital/tonePitchFollower/tonePitchFollower.ino
@@ -17,6 +17,8 @@
https://www.arduino.cc/en/Tutorial/BuiltInExamples/tonePitchFollower
*/
+int buzzerPin = 9;
+
void setup() {
// initialize serial communications (for debugging only):
Serial.begin(9600);
@@ -34,6 +36,6 @@ void loop() {
int thisPitch = map(sensorReading, 400, 1000, 120, 1500);
// play the pitch:
- tone(9, thisPitch, 10);
+ tone(buzzerPin, thisPitch, 10);
delay(1); // delay in between reads for stability
}
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