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APP INVENTOR硬件交互学习教程10——多个虚拟界面实现 - 创客硬件开发 - 清...
本帖最后由 mzb2012 于 2024-07-10 11:47 编辑
通过配置垂直布局实现两个虚拟界面切换。
1.界面设计
增加了两个垂直布局，作为界面1和界面2的容器存放每个页面的内容；增加导航布局，水平布局增加两个按钮，用于切面切换。
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APP INVENTOR硬件交互学习教程11——滑条控制舵机 - 创客硬件开发 - 清泛IT...
这节我们通过滑条控件控制舵机动作。
1.界面设计
增加滑条控件和标签控件，滑条控制舵机动作，标签显示滑条数值。
2.逻辑设计
增加当滑条改变时，显示和发送指令给下位机
3.工程参考
BLE &APP交互学习教程01——下发指令 - 创客硬件开发 - 清泛IT社区，为创新赋能！
BLE模块性价比高，无需配对就可以连接使用，从本节开始，我们着重来学习使用BLE控制和显示。
1.界面设计
2.逻辑设计
3.APP工程
4.下位机工程
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BLE &APP交互学习教程02——接收指令 - 创客硬件开发 - 清泛IT社区，为创新赋能！
BLE模块性价比高，无需配对就可以连接使用，本节开始，我们来学习使用BLE接收并显示。1.界面设计
2.逻辑设计
3.APP工程
4.小结
BLE模块的发送和接收短接，APP发送来的数据模块接收后显示在输入框内。
What is the GAC in .NET?
...dows\assembly>dir
Directory of C:\Windows\assembly
07/20/2009 02:18 PM <DIR> GAC
06/17/2009 04:22 PM <DIR> GAC_32
06/17/2009 04:22 PM <DIR> GAC_64
06/17/2009 04:22 PM <DIR> GAC_MSIL
...snip...
0 File(s)...
Perl build, unit testing, code coverage: A complete working example
... t
In the "lib" directory, create a text file named "HelloPerlBuildWorld.pm". This file is your Perl module that you will be building and testing. Paste the following content into this file:
use strict;
use warnings;
package HelloPerlBuildWorld;
$HelloPerlBuildWorld::VERSION = '0.1';
sub hell...
How do I measure separate CPU core usage for a process?
... output would be something like this (on a quad-core processor):
10:54:41 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
10:54:42 PM all 8.20 0.12 0.75 0.00 0.00 0.00 0.00 0.00 90.93
10:54:42 PM 0 24.00 0.00 2.00 0.00 0.00...
How do I enable EF migrations for multiple contexts to separate databases?
...ext corresponds to its own database? When I run Enable-Migrations in the PM console (Visual Studio 2012), there's an error because of there being multiple contexts:
...
How to run Node.js as a background process and never die?
...s running you need to daemonize it! Use proper tools for it, like forever, pm2 or the plain old init.d scripts.
– Victor Schröder
Mar 16 '16 at 9:28
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Change date format in a Java string
...e
u Day number of week (1 = Monday, ..., 7 = Sunday) Number 1
a Am/pm marker Text PM
H Hour in day (0-23) Number 0
k Hour in day (1-24) Number 24
K Hour in am/pm (0-11) Number 0
h Hour in am/pm (1-12) Number 12
m Minute in hour Number 30
s Second in minute ...