Piezo Buzzer

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Add a loud buzzer alarm or indicator to your projects. Drive this using PWM or code to switch between 0 and 3-5V for loud output.

$0.46 AUD, inc GST

$0.42 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Tue, 26th of Nov

Quantity Discounts:

5-15 $0.41 (exc GST)
15+ $0.40 (exc GST)

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Professional Solderless Breadboard BB400 - 400 tie points (Metal Backing Plate)

$9.00

Jumper Wire 10cm Ribbon (M/M, 40pcs)

$3.20

Piezo transducers or "buzzers" have a special crystal inside that expands and contracts when you apply a voltage. You can harness this effect by driving using PWM or code to switch between 0 and 3-5V really fast to create quite a loud sound. It's a passive buzzer which means it needs an alternating voltage. Just supplying it with 3-5V constantly won't emit sound.

You can get even louder by connecting to two GPIO to either end and alternating HIGH and LOW on each pin. This is called a "differential drive" and effectively means the Piezo element sees +3V and -3V instead of just +3V and 0.

Plugs right into a breadboard to get started quickly.

Specifications

11mm diameter
9mm tall
5mm leads
Use with 3-5V logic

Examples

Raspberry Pi Pico - Micropython

from machine import Pin, PWM
from utime import sleep

# Set up buzzer pin and PWM
buzzer_pin = Pin(7, Pin.OUT)
buzzer_pwm = PWM(buzzer_pin)
buzzer_pwm.duty_u16(1000)

for freq in range(500, 1400, 100):
    # Set buzzer frequency
    buzzer_pwm.freq(freq)
    # Wait
    sleep(.3)

# Turn off the buzzer
buzzer_pwm.duty_u16(0)

This product is listed in:

Components & Parts>Buzzers & Piezos

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Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

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