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记录一下使用JDY-34蓝牙模块，使用本平台搭建蓝牙APP的过程 - 创客硬件开发...
一、目前项目已完成，使用SU-03T做语音识别配合STM32和JDY34搭建一个智能语音音响。
二、过程踩了不少坑，在这里记录避免后来者继续踩坑。
三、具体分享如下：
1、平台配置：
（附...
mqtt协议一般最大支持订阅几个主题？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
...存）往往是更常见的瓶颈。嵌入式设备： 一个运行在ESP32或STM32单片机上的客户端，其可用内存可能只有几百KB。它可能只能成功维护几十个甚至几个订阅，因为每个订阅都需要内存来存储主题过滤器和其他相关状态。超过限制...
AppInventor2 解析json数据技巧 - App应用开发 - 清泛IT社区，为创新赋能！
... "33",
"data_type": "int32",
"access_mode": "读写",
"name": "湿度"
},
{
"identifier"...
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...
...案：WebViewer 直接加载 MJPEG URL ⭐
最简单有效，适合 ESP32-CAM、IP 摄像头等场景：
组件: WebViewer1
属性: HomeURL = "http://192.168.4.1/stream"
EnableJavaScript = True
原理：MJPEG 本质是服务器连续发送 JPEG 帧，WebViewer 自动渲染成视频
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Making a UITableView scroll when text field is selected
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32
It won't work if you override [super viewWillAppear:YES]. Other than that, it should work.
– Rambatino
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Super-simple example of C# observer/observable with delegates
.../340610/…
– Dinah
Aug 8 '09 at 20:32
1
@Dinah: That doesn't avoid the null check. You can still...
How to recover a dropped stash in Git?
...legal!
– Tom Russell
Nov 4 '17 at 7:32
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show 27 more comm...
Why are Oracle table/column/index names limited to 30 characters?
...g else
– Chris Gill
Sep 4 '09 at 10:32
6
Not just millions of lines of DBA written code, but plen...
Git diff to show only lines that have been modified
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Chris HayesChris Hayes
9,43233 gold badges2626 silver badges4242 bronze badges
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Subdomain on different host [closed]
...u could have more than 255 in any of IP address parts! Isn't an IP address 32 bits? So 8 bits per section? which means maximum of 255
– mavili
May 22 '14 at 19:12
15
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