How to Make a Buzzing Sound in Raspberry pi

You want to make a buzzing sound with the Raspberry Pi. Today I show you how to Make a Buzzing Sound in Raspberry pi

Required Component :

1.Raspberry pi

2.Breadboard

3. Connecting wire

4.Resistors

5. 2. Piezo Sounder

This book will help you to gain more knowledge of Raspberry pi Software and Hardware Problems and Solutions

Raspberry Pi Cookbook

Circuit diagram:

shows how you can wire this Buzzer using a solderless breadboard and male-to-female jumper leads

Connecting a piezo buzzer to a Raspberry Pi4

Code :

import RPi.GPIO as GPIO
import time
buzzer_pin = 12
GPIO.setmode(GPIO.BCM)
GPIO.setup(buzzer_pin, GPIO.OUT)
def buzz(pitch, duration):
 period = 1.0 / pitch
 delay = period / 2
 cycles = int(duration * pitch)
 for i in range(cycles):
 GPIO.output(buzzer_pin, True)
 time.sleep(delay)
 GPIO.output(buzzer_pin, False)
 time.sleep(delay)
while True:
 pitch_s = raw_input("Enter Pitch (200 to 2000): ")
 pitch = float(pitch_s)
 duration_s = raw_input("Enter Duration (seconds): ")
 duration = float(duration_s)
 buzz(pitch, duration)

Piezo buzzers don’t have a wide range of frequencies, nor is the sound quality remotely good. However, you can vary the pitch a little. The frequency generated by the code is very approximate. The program works by simply toggling the GPIO pin 12 on and off with a short delay in between. The delay is calculated from the pitch. The higher the pitch (frequency), the shorter the delay needs to be.