SKU_BOS0020_Buzzer_Module

Introduction

This is a simple sound-making module that you can use High/Low to drive it. Just change the buzzing frequency, and you can hear different sounds. The buzzer module is widely used in electronic devices like PC, printers, copiers, alarms, electronic toys, automotive electronics, telephones, and timers. And you also can create many interesting interactive projects with this small but useful module.

Specification

Power Supply: 5.0V
Current Consumption: (MAX)30mA@5V
Interface Type: PH2.0
Dimension: 26×39mm/1.02×1.54"
Signal Type: digital signal (0 or 1)

Pinout

Label	Name	Description
1	GND	Power -
2	VCC	Power +
3	SIGNAL	Digital Signal Line

Usage Description

Input different signals to control the buzzer, shown below:

Input "ON" or "1", and the buzzer module makes sound;

Input "OFF" or "0", and the buzzer module stops.

When powered up, the buzzer module is ready to go, and you can also control its frequency via analog signal.

When the buzzer is controlled via digital signal, input high to start the buzzer, and low to stop it.

When the buzzer is controlled via analog signal, the larger the signal, the louder the buzzer sound; the smaller the signal, the lower the buzzer sound.

Principle

Buzzer is a kind of voice device. It is made of vibration and resonance device. When the buzzer is controlled via digital signal, input high to start the buzzer, and low to stop it. When the buzzer is controlled via analog signal, the larger the signal, the louder the buzzer sound; the smaller the signal, the lower the buzzer sound.

Application

1. Anti-theft Exhibition Booth

Description:
The anti-theft exhibition booth works in this way: put each item on a button module, when the item is placed on the booth, at this time the button is pressed; when it's taken away, the button is released and the buzzer makes sounds.

Components:


BOS0002 Push Button Module	BOS0020 Buzzer Module	BOS0029 Logic Module-NOT

MBT0039 Micro:bit	BOS0040 Micro:bit BOSON Expansion Board	BOS0035 Mainboard-3IO

Tips: micro:bit and Micro:bit BOSON expansion boards are used in the programming example.

Non-programming Sample

Connection Diagram：

Programming Sample

Connection Diagram：

Flow Chart:

Mind+ Sample Program:

Makecode Sample Program:

2. Rain Alarm

Description:
Put the steam sensor outdoors, when there are raindrops on the petal-shaped detection surface, the buzzer will buzz to tell people that it is raining.

Components:


BOS0006 Steam sensor	BOS0020 Buzzer module	BOS0035 Mainboard-3IO

MBT0039 micro:bit	BOS0040 micro:bit BOSON Expansion Board

Tip: micro:bit and its expansion board will be used in programming projects.

Non-programming Project

Connection Diagram：

Connection 1

Programming Project

Connection Diagram:

Connection 2

Flowchart:

Flowchart 1

Mind+ Sample Code:

MakeCode Sample Code:

3. Crowing Rooster

Description:
Use a light sensor to detect the brightness of the surrounding light intensity. The stronger the light, the louder the buzzer sound; the weaker the light, the lower the sound.

Components:


BOS0020 Buzzer Module	BOS0004 Light Sensor	BOS0035 Mainboard-3IO

MBT0039 micro:bit	BOS0040 micro:bit BOSON Expansion Board

Tip: micro:bit and its expansion board will be used in programming projects.

Non-programming Project

Connection Diagram:

Programming Project

Connection Diagram:

Program Flowchart:

Mind+ Sample Code:

MakeCode Sample Code:

4. Shy micro:bit

Description: micro:bit is very shy. He only smiles when no one touches the touch sensor. Otherwise, he shows a crying face on his LED matrix and makes a "crying sound".

Components: