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micro:bit 连接报错 - 创客硬件开发 - 清泛IT社区,为创新赋能!

连接micro:bit设备的时候,找到对应的mrico:bit地址了,在连上的一瞬间后直接闪退,并且报错了。 运行故障 java.lang.ExceptionInInitializerError at edu.mit.appinventor.ble.BluetoothLEint$BLEReadOperation.subscribeBluetoothLEint.java:357) at edu.mit.appinventor....
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请问各位前辈大佬关于APP熄灭屏幕后停止响应的问题。 - App Inventor 2 拓...

...、让屏幕常亮。 或 2、长时间息屏,再打开App时判断MQTT连接及订阅状态,进行重连、重新订阅。
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CustomWebView拓展:WebViewer的扩展版本,具有更高的自定义性和灵活性 - A...

...记录 创建网页快捷方式 下载离线页面并在没有互联网连接的情况下加载 https://community.appinventor.mi ... -of-web-viewer/9934 https://github.com/vknow360/CustomWebView
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Modbus硬件控制03——485串口助手控制继电器 - 创客硬件开发 - 清泛IT社区...

...成485调试功能,自带CRC校验,非常易于使用。 2.硬件连接 通过USB转485接入PC 3.测试步骤 发送字符串,一共两条指令 第一条是闭合继电器 第二条是断开继电器
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关于阿里云传输数据问题 - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!

本帖最后由 anticipation 于 2026-01-04 21:54 编辑 连接阿里云平台时,在软件程序设计中的有关主题发布的消息栏中要直接填写要发送的内容,还是有要阿里云特定的JSON格式? 遇到的问题:平台没反应 求解: ...
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有没有其他方式 在app上接收jpeg数据流变成视频? - App应用开发 - 清泛IT...

...适用场景 缺点 Timer + Image 轮询 单帧 JPEG URL 每帧重建连接,效率低、延迟高 Web + Canvas 自定义 需要图像预处理 实现复杂 第三方扩展 专业应用 需找支持的扩展 实测案例:ESP32-CAM 视频小车 ✅ WebViewer 加载 http://192.168...
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How to download all files (but not HTML) from a website using wget?

... CurtisLeeBolin 4,05522 gold badges1010 silver badges1111 bronze badges answered Jan 6 '12 at 9:58 Zsolt BotykaiZsolt B...
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Current time formatting with Javascript

... i format date = "2016/03/01 11:00" to date ="Sat Mar 01 2016 11:00:00 GMT+0530 (IST)" – Vishal Singh Feb 25 '16 at 7:27 ...
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Apache: client denied by server configuration

... slightly earlier) added a new security feature that often results in this error. You would also see a log message of the form "client denied by server configuration". The feature is requiring an authorized user identity to access a directory. It is turned on by DEFAULT in the httpd.conf that ships ...
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Check if an apt-get package is installed and then install it if it's not on Linux

...s upon finding that the package is missing, such as simply exiting with an error code. REQUIRED_PKG="some-package" PKG_OK=$(dpkg-query -W --showformat='${Status}\n' $REQUIRED_PKG|grep "install ok installed") echo Checking for $REQUIRED_PKG: $PKG_OK if [ "" = "$PKG_OK" ]; then echo "No $REQUIRED_P...