Difference between revisions of "BakeBit - Button/zh"
From FriendlyELEC WiKi
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*[Schematic]([http://wiki.friendlyarm.com/wiki/images/8/8a/05-SCHEMATIC_Button.pdf BakeBit - Button.pdf]) | *[Schematic]([http://wiki.friendlyarm.com/wiki/images/8/8a/05-SCHEMATIC_Button.pdf BakeBit - Button.pdf]) | ||
*[BakeBit Github项目](https://github.com/friendlyarm/BakeBit) | *[BakeBit Github项目](https://github.com/friendlyarm/BakeBit) | ||
− | *[BakeBit Starter Kit手册](http://wiki.friendlyarm.com/bakebit/bakebit_starter_kit_manual_cn. | + | *[BakeBit Starter Kit手册](http://wiki.friendlyarm.com/bakebit/bakebit_starter_kit_manual_cn.pdf) |
Revision as of 10:42, 28 November 2016
1 介绍
- BakeBit - Button是一个瞬时(非自锁)按钮开关模块,用于检测按键事件,按钮被释放后自动恢复到常态。
- 在按钮未被按下时模块输出高电平,按钮被按下后输出低电平。
2 特性
- 使用标准的2.0mm 4 Pin BakeBit接口
- 数字信号输出
- PCB尺寸(mm):20x24
- 引脚说明:
名称 | 描述 |
GND | 地 |
5V | 电源5V |
NC | 空 |
SIG | 信号 |
3 示例程序:Button And Buzzer
本示例需要配合蜂鸣器使用。
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:
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")
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
- [Schematic](BakeBit - Button.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)