Buzzer Unit is a mini passive buzzer unit, drived by 4KHz signal, that sounds up to 72dB within 10cm distance under rating input power.
With the feature of compact size, low-power consumption, awesome audio performance, and a protective housing. Applied for varied buzzer alarm scenario.
Features
- Drive signal:
- 4KHz oscillation frequency
- Up to 72dB (within 10cm, at rating power)
- Drive signal: 4KHz 1/2duty square wave
Include
- 1x BUZZER Unit
- 1x HY2.0-4P cable (20cm)
Specification
| Specifications | Parameters |
|---|---|
| Drive frequency | 4KHz 1/2duty square wave |
| Power consumption | 5V@86mA |
| Net weight | 3.5g |
| Gross weight | 8.5g |
| Product size | 24 x 24 x 8mm |
| Packing size | 93 x 138mm |
PinMap
| M5CORE - PORT B | G26 |
| BUZZER | SIGNAL |
Example
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. 设置通道对应的频率和计数位数
ledcAttachPin(buzzer_pin, ledChannel); //Binds the specified channel to the specified I/O port for output. 将指定通道绑定到指定 IO 口上以实现输出
ledcWrite(ledChannel, 512); //Output PWM. 输出PWM
}
void loop() {
ledcWrite(ledChannel, 512); //Output PWM. 输出PWM
delay(3000);
ledcWrite(ledChannel, 0); //Output PWM. 输出PWM
delay(3000);
}