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HC-05 蓝牙模块开发 - 创客硬件开发 - 清泛IT社区，为创新赋能！
它有六个引脚，引脚的作用如下：
通过厂商App连接串口测试，发现HC-05模块是经典蓝牙2.0，并不支持蓝牙5.0（低功耗BLE），它需要配对码进行配对，App Inventor 2 中使用“蓝牙客户端”组件，而非BLE拓展，必须在手机设置中...
蓝牙BLE设备使用BLE拓展连不上蓝牙？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
...蓝牙？
这里统一说明一下：
一般先用硬件厂商提供的App 或者 nRF Connect App 进行硬件连接和测试，没问题再使用ai2 ble拓展开发。
如果测试没有问题，ai2 蓝牙连接处代码及具体的报错信息截图提供，具体问题具体分析。
MAC地址可以连上，硬件通信时提示无效的UUID？ - 创客硬件开发 - 清泛IT社...
...E2:E0:5A:46:86:2F
使用MAC地址连接，一切功能正常。
这个 APP程序 使用透传UUID 还可以控制蓝牙模块的IO 口么？这个 APP程序 使用透传UUID 还可以控制蓝牙模块的IO 口么？透传uuid和io控制的uuid是不一样的，具体清参考：https://bb...
Qt: How do I handle the event of the user pressing the 'X' (close) button?
I am developing an application using Qt. I don't know which slot corresponds to the event of "the user clicking the 'X'(close) button of the window frame" i.e. this button:
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Want to find records with no associated records in Rails
...he contact into memory. The SQL request speed is the same, but the overall app benefit is much larger.
– chrismanderson
Mar 23 '17 at 0:09
2
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How to pass variable from jade template file to a script file?
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Yes I got this working also by wrapping the local variable in the template in quotes and the #{} indicator.
– Askdesigners
Feb 11 '15 at 20:02
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Connection string using Windows Authentication
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i know you can set a specific AD user to app pool (web app). can you do the same for windows app?
– user384080
Jul 4 '14 at 2:10
6
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How can I find out if I have Xcode commandline tools installed?
... of all, be sure that you have downloaded it or not. Open up your terminal application, and enter $ gcc if you have not installed it you will get an alert. You can verify that you have installed it by
$ xcode-select -p
/Library/Developer/CommandLineTools
And to be sure then enter $ gcc --version...
Force Screen On
How do I force the screen to stay active and not shut off while my app is running?
3 Answers
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Simplest PHP example for retrieving user_timeline with Twitter API version 1.1
...a free and necessary step to make requests for the v1.1 API.
2. Create an application: Create an application on the Twitter developer site
What? You thought you could make unauthenticated requests? Not with Twitter's v1.1 API.
You need to visit http://dev.twitter.com/apps and click the "Create App...