Difference between revisions of "BakeBit - Buzzer"

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[[BakeBit - Buzzer/zh|查看中文]]
 
[[BakeBit - Buzzer/zh|查看中文]]
 +
 +
==介绍==
 +
[[File:BakeBit - Buzzer.jpg|thumb|Buzzer]]
 +
* BakeBit - Buzzer是一个无源蜂鸣器模块，无源蜂鸣器内部有音圈和钼片，输入2.7KHz的PWM信号时，PWM信号通过绕在支架上的线包在支架的芯柱上产生一交变的磁通，交变的磁通和磁环恒定磁通进行叠加，使钼片以给定的PWM信号频率振动并配合共振腔发声。
 +
*通过调整输入PWM信号的频率即可使无源蜂鸣器发出频率不同的声音。
 +
* 广泛应用于计算机、报警器、电子玩具、汽车电子设备、定时器等电子产品中作发声器件。
 +
 +
==特性==
 +
* 使用标准的2.0mm 4 Pin BakeBit接口
 +
* PWM信号输入
 +
* PCB尺寸（mm）：20x24
 +
[[File:BakeBit - Buzzerpcb.png|frameless|300px|无源蜂鸣器PCB]]
 +
 +
* 引脚说明:
 +
{| class="wikitable"
 +
|-
 +
|名称 || 描述
 +
|-
 +
|GND    || 电源5V
 +
|-
 +
|5V    || 地
 +
|-
 +
|NC    || 空
 +
|-
 +
|SIG    || 输入，接PWM
 +
|}
 +
== 示例程序：Button And Buzzer ==
 +
 +
本示例需要配合[[BakeBit - Button]]使用。
 +
 +
=== 硬件连接 ===
 +
简单的将 蜂鸣器 模块插入 D3接口，将 按键 插入 D4 接口，如下面这样：
 +
 +
::{| class="wikitable"
 +
|-
 +
|[[File:Button And Buzzer-1.jpg |frameless|300px]]    || [[File:Button And Buzzer-2.jpg |frameless|300px]]
 +
|-
 +
|}
 +
 +
=== 示例源代码 ===
 +
 +
<syntaxhighlight lang="python">
 +
import bakebit
 +
import time
 +
# Connect the BakeBit Ultrasonic Ranger to digital port D4
 +
# SIG,NC,VCC,GND
 +
ultrasonic_ranger = 4
 +
 +
# Connect the BakeBit LED to digital port D3
 +
led = 3                                                                     
 +
 +
bakebit.pinMode(led,"OUTPUT")
 +
light = 0
 +
 +
while True:
 +
    try:
 +
        # Read distance value from Ultrasonic
 +
distance = bakebit.ultrasonicRead(ultrasonic_ranger)
 +
        print(distance)
 +
if distance > 0:
 +
if distance<10:
 +
if light == 0:
 +
print("\ton")
 +
bakebit.digitalWrite(led,1)
 +
light = 1
 +
else:
 +
if light == 1:
 +
print("\toff")
 +
bakebit.digitalWrite(led,0)
 +
light = 0
 +
time.sleep(.2)
 +
 +
    except KeyboardInterrupt:
 +
bakebit.digitalWrite(led,0)
 +
        break
 +
 +
    except TypeError:
 +
        print ("Error")
 +
    except IOError:
 +
        print ("Error")
 +
</syntaxhighlight>
 +
 +
[https://github.com/friendlyarm/BakeBit/blob/master/Software/Python/bakebit_prj_Button_And_Buzzer.py.py Github]
 +
 +
=== 运行示例 ===
 +
 +
假设你已经参考[http://wiki.friendlyarm.com/bakebit bakebit教程]安装了BakeBit源代码，<br />
 +
要运行示例程序，可以在开发板上进入 BakeBit/Software/Python目录,运行bakebit_prj_Button_And_Buzzer.py:
 +
<syntaxhighlight lang="bash">
 +
cd ~/BakeBit/Software/Python
 +
sudo python bakebit_prj_Button_And_Buzzer.py
 +
</syntaxhighlight>
 +
 +
=== 运行结果 ===
 +
 +
当按下按键时，蜂鸣器会响起，松开按键时，蜂鸣器停止。
 +
 +
==相关资料==
 +
*[Schematic]([http://wiki.friendlyarm.com/wiki/images/5/5b/04-SCHEMATIC_Buzzer.pdf BakeBit - Buzzer.pdf])
 +
*[BakeBit Github项目](https://github.com/friendlyarm/BakeBit)
 +
*[BakeBit Starter Kit手册](http://wiki.friendlyarm.com/bakebit/bakebit_starter_kit_manual_cn.pdf)

Revision as of 13:17, 11 December 2016

查看中文

1 介绍

Buzzer
  • BakeBit - Buzzer是一个无源蜂鸣器模块，无源蜂鸣器内部有音圈和钼片，输入2.7KHz的PWM信号时，PWM信号通过绕在支架上的线包在支架的芯柱上产生一交变的磁通，交变的磁通和磁环恒定磁通进行叠加，使钼片以给定的PWM信号频率振动并配合共振腔发声。
  • 通过调整输入PWM信号的频率即可使无源蜂鸣器发出频率不同的声音。
  • 广泛应用于计算机、报警器、电子玩具、汽车电子设备、定时器等电子产品中作发声器件。

2 特性

  • 使用标准的2.0mm 4 Pin BakeBit接口
  • PWM信号输入
  • PCB尺寸（mm）：20x24

无源蜂鸣器PCB

  • 引脚说明:
名称 描述
GND 电源5V
5V 地
NC 空
SIG 输入，接PWM

3 示例程序：Button And Buzzer

本示例需要配合BakeBit - Button使用。

3.1 硬件连接

简单的将 蜂鸣器 模块插入 D3接口，将 按键 插入 D4 接口，如下面这样：

Button And Buzzer-1.jpg Button And Buzzer-2.jpg

3.2 示例源代码

import bakebit
import time
# Connect the BakeBit Ultrasonic Ranger to digital port D4
# SIG,NC,VCC,GND
ultrasonic_ranger = 4
 
# Connect the BakeBit LED to digital port D3
led = 3                                                                      
 
bakebit.pinMode(led,"OUTPUT")
light = 0
 
while True:
    try:
        # Read distance value from Ultrasonic
	distance = bakebit.ultrasonicRead(ultrasonic_ranger)
        print(distance)
	if distance > 0:
		if distance<10: 
			if light == 0:
				print("\ton")
				bakebit.digitalWrite(led,1)
				light = 1
		else:
			if light == 1:
				print("\toff")
				bakebit.digitalWrite(led,0)
				light = 0
	time.sleep(.2)
 
    except KeyboardInterrupt:
	bakebit.digitalWrite(led,0)
        break
 
    except TypeError:
        print ("Error")
    except IOError:
        print ("Error")

Github

3.3 运行示例

假设你已经参考bakebit教程安装了BakeBit源代码，
要运行示例程序，可以在开发板上进入 BakeBit/Software/Python目录,运行bakebit_prj_Button_And_Buzzer.py: 

cd ~/BakeBit/Software/Python
sudo python bakebit_prj_Button_And_Buzzer.py

3.4 运行结果

当按下按键时，蜂鸣器会响起，松开按键时，蜂鸣器停止。

4 相关资料

Retrieved from "https://wiki.friendlyelec.com/wiki/index.php?title=BakeBit_-_Buzzer&oldid=8273"