Unit Buzzer

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SKU:U132

Description

Unit Buzzer is a passive buzzer expansion unit, driven by a 4KHz frequency signal. When powered at the rated voltage, the sound pressure level can reach 72dB within 10cm. It is characterized by its compact size, low power consumption, good sound effect, and built-in protective casing, making it suitable for various buzzer alarm scenarios.

Features

• Drive Signal:
  • 4KHz oscillation frequency
  • Sound pressure level 72dB (at 10cm rated voltage)
  • Drive signal: 4KHz 1/2 duty square wave

Includes

• 1 x Unit Buzzer
• 1 x HY2.0-4P Grove connection cable (20cm)

Applications

• Buzzer alarm/notification

Specifications

Schematics

PinMap

Unit Buzzer

Model Size

Softwares

Arduino

#include <Arduino.h>

#define buzzer_pin 26
int freq = 4000;
int ledChannel = 0;
int resolution = 10;

void setup() {
  ledcSetup(ledChannel, freq, resolution);  //Sets the frequency and number of counts corresponding to the channel.
  ledcAttachPin(buzzer_pin, ledChannel); //Binds the specified channel to the specified I/O port for output.
  ledcWrite(ledChannel, 512);  //Output PWM.
}

void loop() {
    ledcWrite(ledChannel, 512);  //Output PWM.
    delay(3000);
    ledcWrite(ledChannel, 0);  //Output PWM.
    delay(3000);
}
 

UiFlow1

• Unit Buzzer UiFlow1 Docs

UiFlow2

• Unit Buzzer UiFlow2 Docs

Video