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为啥“蓝牙客户端”组件在连接设备时就没反应了？ - 创客硬件开发 - 清泛IT...
...的情况下，连接的步骤卡住了，有时报错：“Error 507: Unable to connect. Is the device turned on?”
这时可以考虑是否时硬件没有开机，或者硬件蓝牙版本是否是2.0经典蓝牙。最终用户使用ble拓展，成功连接及测试成功。
也就是硬件...
解决 Error 503: The specified address is not a valid Bluetooth MAC add...
...式不对，蓝牙列表可能显示不对。大概率是经典蓝牙和 ble 低功耗蓝牙的设备列表处理的方式不对。
本例中就是经典蓝牙，但是用的 ble 的方式显示导致的问题。
App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
...
Error 515: Not connected to a Bluetooth device.
Error 507: unable to connect. is the device turned on?
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经典蓝牙硬件有很多款，但是hc05尤为常见，这里以hc05为例，介绍一下经典蓝...
Compression/Decompression string with C#
... only for UTF8-based things. If you add in, say, Swedish characters like åäö to the string value you're serialize/deserializing it will fail a round-trip test :/
– bc3tech
Aug 21 '19 at 12:32
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Set breakpoint in C or C++ code programmatically for gdb on Linux
... answered Dec 1 '10 at 16:22
Håvard SHåvard S
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SQL to LINQ Tool [closed]
...
Looks like it's had no support for 2½ years. I could not even install Linqer correctly. Failed on me with an error: "Not suppported Entity Framework version 0", spelling mistake & all.
– user1040323
Sep 28 '18 at 15:...
What is makeinfo, and how do I get it?
...d Sep 4 '19 at 21:25
Samuel LelièvreSamuel Lelièvre
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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...
Android: Is it possible to display video thumbnails?
...ed Mar 9 '16 at 23:33
Edouard BrèthesEdouard Brèthes
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LaTeX source code listing like in professional books
...r 12 '09 at 17:13
Tormod FjeldskårTormod Fjeldskår
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