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【Mixly×AI2系列·第5讲】手机发指令控制LED/舵机：蓝牙双向通信实战① - ...
...限；或使用新版 AI2（自动申请 BLUETOOTH_SCAN/CONNECT）。首次运行允许位置权限（经典蓝牙扫描需要）。
六、联调步骤
1. 手机系统蓝牙先与 HC-05 配对（密码 1234/0000）
2. 硬件上电，Mixly 串口监视器确认无报错
3. 打开 App → ListPi...
How to get all groups that a user is a member of?
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The above was giving me errors ("The server was unable to process the request due to an internal error" - presumably functionality not available on the server). get-aduser $username -Properties memberof | select -expand memberof worked fine though.
–...
How can I read a text file in Android?
...rings[1].trim());
if (id < 0) {
Log.e(TAG, "unable to add word: " + strings[0].trim());
}
}
} finally {
reader.close();
}
Log.d(TAG, "DONE loading words.");
}
...
How do I check whether a jQuery element is in the DOM?
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Since I'm unable to respond as a comment (too low karma I guess), here's a full reply. The fastest way is easily to unroll the jQuery check for browser support and to shave the constant factors to minimum.
As seen also here - http://j...
App Inventor 2 物联网入门的两个方向：BLE直连硬件 vs MQTT云端通信，你的...
...通过MQTT发布到"sensor/temp"主题。你在上海的手机上运行同样的App，订阅该主题，数据自动推送过来。配合App Inventor的Clock组件定时重连，基本能做到全天候在线。
结论：跨地域、需要远程访问 → 必须上MQTT。
场景3：...
Converting a String to DateTime
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unable to convert this to date time string MyString = "06/22/1916 3:20:14 PM";
– Vinod Kumar
Jun 22 '16 at 11:04
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I need an unordered list without any bullets
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If you're unable to make it work at the <ul> level, you might need to place the list-style-type: none; at the <li> level:
<ul>
<li style="list-style-type: none;">Item 1</li>
<li style="list-sty...
git pull error :error: remote ref is at but expected
...]
I was able to pull the changes.
Note: I was using SourceTree and was unable to do the pull.
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Installing rmagick on Ubuntu
... : Depends: libmagickwand-6.q16-dev but it is not going to be installed E: Unable to correct problems, you have held broken packages"
– Dinesh Kumar Soni
Jun 15 '18 at 11:38
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“/usr/bin/ld: cannot find -lz”
...brary, either because it's missing or some permissions barrier, it will be unable to build/function.
– ti7
Feb 7 at 22:00
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