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BLE 模块 透传问题 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...件内容读出来，然后调用 ble 的写方法。感谢老师引用: App Inventor 2 发表于 2024-03-31 16:53
传文件，需要先用“文件管理器”组件，将文件内容读出来，然后调用 ble 的写方法。 ...
感谢老师
创建并发送BLE蓝牙广播 - 创客硬件开发 - 清泛IT社区，为创新赋能！
在MIT App Inventor社区的一篇帖子中，用户尝试使用最新的BLE扩展来创建和发送蓝牙广播，但遇到了一些问题。Evan Patton指出，Android的BLE子系统需要使用16位UUID，并提供了一个测试版的BLE扩展，解决了广播发送失败的问题。
以下...
【客户反馈】增加直接改项目名称的功能 - 用户反馈 - 清泛IT社区，为创新赋能！
...了，编译通过。 rename后再另存，就不行。
修复中。。。App Inventor 2 发表于 2024-08-30 09:29
rename 没有真正改名，编译仍然失败
另存为 是彻底改了，编译通过。 rename后再另存，就不行。
修复中。。 ...
改名功能...
MQTT支持获取设备端的在线状态吗？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
mqtt拓展支持获取设备端的在线状态吗？这里仅仅提供一个思路：
设备状态是设备的一项数据，这个也需要设备上报其状态数据给app端，类似网络的心跳包，定时上报状态数据，一定时间没取到数据就认为设备离线。
micro:bit 连接报错 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...错了。
运行故障
java.lang.ExceptionInInitializerError at edu.mit.appinventor.ble.BluetoothLEint$BLEReadOperation.subscribeBluetoothLEint.java:357) at
edu.mit.appinventor.ble.BluetoothLEintSBLEReadOperation.run(BluetoothLEint.java:325) at android.os.Handler.handleCallback(Handler.java:1013) ...
How To Get IPython Notebook To Run Python 3?
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In Anaconda "launcher.app" there is “Environment:” pull down menu.
The default environment is called "root". In order to launch application using another environment, just select the desired environment from the list, to make it active.
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How do I get Windows to go as fast as Linux for compiling C++?
...le-file lookup times, with a btree structure. In Linux (last I looked), an app can read an entire folder with a single system call, and iterate through the resulting structure entirely in user code; Windows requires a separate sys call for each file. Either way, compilers shouldn't need to read the ...
Creating a singleton in Python
...), {})): pass
class Logger(Singleton):
pass
An ironic aspect of this approach is that it's using subclassing to implement a metaclass. One possible advantage is that, unlike with a pure metaclass, isinstance(inst, Singleton) will return True.
Corrections
On another topic, you've probably alrea...
Return HTTP status code 201 in flask
...sk import Response
> return Response("{'a':'b'}", status=201, mimetype='application/json')
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PCH File in Xcode 6
... buttons)
Project > Build Settings > Search: "Prefix Header".
Under "Apple LLVM 7.0" you will get the Prefix Header key.
Type file directory. e.g: "$(SRCROOT)/$(PROJECT_NAME)/ProjectName-Prefix.pch".
Clean project: ⌘cmd+⇧shift+K
Build project: ⌘cmd+B
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