# Octopus Passive buzzer Brick OBPB01(EF04031)

## Introduction

 Octopus Passive Buzzer Brick is based on a passive buzzer, it could control the volume by PWM. 

 ![](./images/0G3EEXg.jpg)

## Products Link

[ELECFREAKS Octopus Passive Buzzer Brick](https://shop.elecfreaks.com/products/elecfreaks-octopus-passive-buzzer-brick?_pos=1&_sid=a04baba3d&_ss=r)

## Characteristics

 The 3-pins ports is easy to plug and play.
 It can work with micro:bit in 3V. 

## Specifications


Item | Parameter 
:-: | :-: 
SKU|EF04031
Power Supply|3V-5.5V
Connector Type|Analog
Pins Definition|1-Signal 2-VCC 3-GND
Response|Quick response with high sensitivity
Circuit|Simple
Stability|Stable and durable

## Outlook and Dimensions


![](./images/bsmWrzk.jpg)

## Quick to Start


### Materials used and connection diagram

 Connect to the P0 port as the picture shows

  Take sensor:bit for example

 ![](./images/wqD4VuO.png)

### Program as the picture shows

 Playing a melody when power is on.

 ![](./images/KjnioxB.png)

### Reference

Links: [https://makecode.microbit.org/_Yew55FJateYP](https://makecode.microbit.org/_Yew55FJateYP)

You can also download the links below:

<div style="position:relative;height:0;padding-bottom:70%;overflow:hidden;"><iframe style="position:absolute;top:0;left:0;width:100%;height:100%;" src="https://makecode.microbit.org/#pub:_Yew55FJateYP" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  


### Result
 The buzzer is playing a melody when power is on.

## Relevant Cases


## Technique Files