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:

http://www.ardumotive.com/how-to-use-a-buzzer-en1....

Let's get started!

For this tutorial you will need:

• GPIO Breakout (optional)
  
• Breadboard
• Buzzer/piezo speaker

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

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

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)

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.

Video in Greek language