Raspberry Pi Tutorial: How to Use a Buzzer




In this tutorial you will learn how to use a buzzer (or piezo speaker) with Raspberry Pi. Buzzers can be found in alarm devices, computers, timers and confirmation of user input such as a mouse click or keystroke.

Tutorial updates and more Raspberry Pi tutorials can be found here:


Let's get started!

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Step 1: What You Will Need - Hardware

For this tutorial you will need:

And of course any Raspberry Pi board with Raspbian OS installed.

Step 2: The Circuit

The connections are pretty easy, see the image above with breadboard circuit schematic.

Step 3: Python Code

In the program below, the first thing you do is to import the library for GPIO and sleep. The next step is to initialize pin 23 as an output pin with GPIO.setup( ) function. The While True loop runs over and over again, forever. In the main loop, you make a beep sound with GPIO.output( ) function and "pause" the program for 0.5 second with sleep( ) function.

Download the code from here and open it with Thonny Python IDE or run it from terminal.

  1. #Libraries
  2. import RPi.GPIO as GPIO
  3. from time import sleep
  4. #Disable warnings (optional)
  5. GPIO.setwarnings(False)
  6. #Select GPIO mode
  7. GPIO.setmode(GPIO.BCM)
  8. #Set buzzer - pin 23 as output
  9. buzzer=23
  10. GPIO.setup(buzzer,GPIO.OUT)
  11. #Run forever loop
  12. while True:
  13. ......GPIO.output(buzzer,GPIO.HIGH)
  14. ......print ("Beep")
  15. ......sleep(0.5) # Delay in seconds
  16. ......GPIO.output(buzzer,GPIO.LOW)
  17. ......print ("No Beep")
  18. ......sleep(0.5)

Step 4: Well Done

You have successfully completed one more Raspberry Pi "How to" tutorial and you learned how to use a buzzer!
I hope you liked this, let me know in the comments below.

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    Question 1 year ago on Step 4

    this is a good Tutorial I am wondering if you could do one about speakers as this does not quite cover them