noTone()

Description

Stops the generation of a square wave triggered by tone(). Has no effect if no tone is being generated.

Syntax

noTone(pin)

Parameter Values

  • pin: the Arduino pin on which to stop generating the tone

Return Values

  • Nothing

Example

Let's to play "Jingle Bells" song with Arduino.

Hardware Required

1×Arduino UNO or Genuino UNO
1×Piezo Buzzer
1×Breadboard
1×Jumper Wires
1×(Optional) 9V Power Adapter for Arduino
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Wiring Diagram

Arduino Piezo Buzzer Wiring Diagram

This image is created using Fritzing. Click to enlarge image

Arduino Code

/* * Created by ArduinoGetStarted.com * * This example code is in the public domain * * Tutorial page: https://arduinogetstarted.com/reference/notone */ #include "pitches.h" // notes in the melody: int melody[] = { NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_G5, NOTE_C5, NOTE_D5, NOTE_E5, NOTE_F5, NOTE_F5, NOTE_F5, NOTE_F5, NOTE_F5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_D5, NOTE_D5, NOTE_E5, NOTE_D5, NOTE_G5 }; // note durations: 4 = quarter note, 8 = eighth note, etc, also called tempo: int noteDurations[] = { 8, 8, 4, 8, 8, 4, 8, 8, 8, 8, 2, 8, 8, 8, 8, 8, 8, 8, 16, 16, 8, 8, 8, 8, 4, 4 }; void setup() { // iterate over the notes of the melody: int size = sizeof(noteDurations) / sizeof(int); for (int thisNote = 0; thisNote < size; 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); // 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); } } void loop() { // no need to repeat the melody. }

For more detailed instruction, see Arduino - Piezo Buzzer

※ NOTES AND WARNINGS:

If you want to play different pitches on multiple pins, you need to call noTone() on one pin before calling tone() on the next pin.

See Also

ARDUINO BUY RECOMMENDATION

Arduino UNO R3
Arduino Starter Kit

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