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ezBuzzer Library - Beep Example
This example uses a piezo buzzer:
- Generates a 100ms beep on background when a button is pressed
- Without using delay() function, this is a non-blocking example
Hardware Required
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About ezBuzzer Library
- Refer to Arduino - ezBuzzer Library Reference
Wiring Diagram
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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 Beep example
/*
Created by ArduinoGetStarted.com
This example code is in the public domain
Tutorial page: https://arduinogetstarted.com/library/arduino-beep-example
Library References: https://arduinogetstarted.com/tutorials/arduino-buzzer-library
This example uses a piezo buzzer:
+ generates a 100ms beep on background when a button is pressed
+ without using delay() function, this is a non-blocking example
*/
#include <ezBuzzer.h> // ezBuzzer library
const int BUTTON_PIN = 7;
const int BUZZER_PIN = 3;
int lastButtonState = HIGH; // the previous state from the input pin
ezBuzzer buzzer(BUZZER_PIN); // create ezBuzzer object that attach to a pin;
void setup() {
Serial.begin(9600);
pinMode(BUTTON_PIN, INPUT_PULLUP);
}
void loop() {
buzzer.loop(); // MUST call the buzzer.loop() function in loop()
int currentState = digitalRead(BUTTON_PIN);
if (lastButtonState == HIGH && currentState == LOW) {
Serial.println("The button is pressed");
buzzer.beep(100); // generates a 100ms beep
}
lastButtonState = currentState;
}
- Click Upload button on Arduino IDE to upload code to Arduino
- Press and release the button some time
- You will hear a beep each time you press button.
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.