ezBuzzer Library - Melody Repeat Example

This example uses a piezo buzzer:

Hardware Required

1×Arduino UNO or Genuino UNO
1×USB 2.0 cable type A/B
1×Piezo Buzzer
2×Button
1×Breadboard
n×Jumper Wires
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About Piezo Buzzer and Button

If you do not know about piezo buzzer and button (pinout, how it works, how to program ...), learn about them in the following tutorials:

About ezBuzzer Library

Wiring Diagram

Arduino Button Piezo Buzzer Wiring Diagram

Arduino Code

Quick Steps

  • Install ezBuzzer library. See How To
  • Connect Arduino to PC via USB cable
  • Open Arduino IDE, select the right board and port
  • On Arduino IDE, Go to File Examples ezBuzzer Melody example
/* Created by ArduinoGetStarted.com This example code is in the public domain Tutorial page: https://arduinogetstarted.com/library/arduino-melody-repeat-example Library References: https://arduinogetstarted.com/tutorials/arduino-buzzer-library This example uses a piezo buzzer: + play a melody on background + repeat the melody when it is ended + without using delay() function, this is a non-blocking example */ #include <ezBuzzer.h> // ezBuzzer library const int BUZZER_PIN = 3; ezBuzzer buzzer(BUZZER_PIN); // create ezBuzzer object that attach to a pin; // 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 }; int noteLength; void setup() { Serial.begin(9600); noteLength = sizeof(noteDurations) / sizeof(int); } void loop() { buzzer.loop(); // MUST call the buzzer.loop() function in loop() if (buzzer.getState() == BUZZER_IDLE) { // if stopped buzzer.playMelody(melody, noteDurations, noteLength); // playing } }
  • Click Upload button on Arduino IDE to upload code to Arduino
  • Arduino IDE Upload Code
  • You will hear "Jingle Bells" song repeatedly

Code Explanation

Read the line-by-line explanation in comment lines of source code!

※ NOTE THAT:

The above example code demonstrates how to use the ezBuzzer library to make a beep on Piezo Buzzer each time button is pressed. In practice, You may need to debounce for the button. Debouncing for the button is not easy for beginners. Fortunately, thanks to the ezButton library, We can do it easily.

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