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App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...rsion 拓展
【动态创建】DynamicComponents 拓展：动态创建AI2组件对象
【Hash】文件Hash值拓展：sha256、sha512 哈希
【向量计算】VectorArithmetic 拓展：计算两个向量相加的结果向量
【手机管理】App Inventor 2 TaifunTM 拓展：获取本机手...
米思齐(Mixly) × App Inventor2 接入调研报告：技术路线、接入步骤与教程...
...蓝牙 SPP：Arduino + HC-05/06 模块 → App Inventor2 BluetoothClient 组件 → 难度★★
• BLE 蓝牙：ESP32 / 掌控板 / Micro:bit → BluetoothLE 扩展 → 难度★★★
• WiFi(TCP/UDP)：ESP32/ESP8266 → Web 组件或 WiFi 扩展 → 难度★★★
• WiFi(HTTP)：ESP32 起...
我帮儿子用App Inventor 2给遥控车装了"蓝牙大脑"，手机一划车就...
...跑。"看着他期待的眼神，我决定用App Inventor 2的蓝牙组件试试。没想到两小时就搞定了，而且连接稳定性和操控体验远超预期。
需求分析
儿子想要的是：手机屏幕上显示方向键，手指滑动时遥控车前进、后退、左右转...
纯血鸿蒙 spp ble tcp 通信组件进展 - HarmonyOS NEXT - 清泛IT社区，为创新赋能！
spp ble tcp 通信组件基础功能已调通，细节待深入测试。mqtt 正在测试中。
在APP Inventor的BLE组件使用RequestMTU方法之后，发送的字符数依旧限制在2...
目前APP是能连接上蓝牙，也能传输数据，但是发送和接受的数据都是20字节的分包。使用BLE调试宝，在里面修改MTU，返回的值是512，并且是修改成功的，但是在编程中使用RequestMTU方式设置512,，并且读取返回值也是512，然后调用...
How to manually expand a special variable (ex: ~ tilde) in bash
... Preferably, I'd go with either of these two:
Charle's Duffy's solution
Håkon Hægland's solution
Original answer for historic purposes (but please don't use this)
If I'm not mistaken, "~" will not be expanded by a bash script in that manner because it is treated as a literal string "~". You...
Remove non-utf8 characters from string
... }
}
return $NewStr;
}
How it works:
echo remove_bs('Hello õhowå åare youÆ?'); // Hello how are you?
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How do I get a consistent byte representation of strings in C# without manually specifying an encodi
...tring data = "A string with international characters: Norwegian: ÆØÅæøå, Chinese: 喂 谢谢";
var bytes = System.Text.Encoding.UTF8.GetBytes(data);
var decoded = System.Text.Encoding.UTF8.GetString(bytes);
Don't reinvent the wheel if you don't have to...
...
BLE（一）概述&工作流程&常见问题 - 创客硬件开发 - 清泛IT社区，...
文章源自：https://www.gandalf.site/2018/11/ble.html
0x1 BLE概述“蓝牙”，即Bluetooth，是斯堪的纳维亚语中 Blåtand / Blåtann 的英化版本。该词是十世纪的一位国王Harald Bluetooth的绰号，相传他将纷争不断的丹麦部落统一为一个王国，并引...
How does Stack Overflow generate its SEO-friendly URLs?
...uld be nice with a version that doesn't just drop accented characters like åäö but instead deaccentuate them to aao... ^^
– Oskar Duveborn
Nov 16 '09 at 20:48
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