Node.js realtime communication with ESP8266 via socket.io

Node.js realtime communication with NodeMCU with socket.io Reference: https://salfade.com/tutorials/realtime-communication-with-nodemcu-with-socketio Goal of this post Establish a real-time communication between a server and the NodeMCU, this can be really useful like a situation where the server has to notify the client asynchronously, Let’s get started with the back-end We are going to use a Node server, where we can integrate Socket.io init. Install Node.js if you haven’t it yet. In node, we ‘ll be using the framework called express to deal with the communication with HTTP requests.

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Attiny85 Arduino SleepMode 睡眠模式使用笔记

Attiny85 Arduino SleepMode 睡眠模式使用笔记 Attiny 85 board: 这款迷你开发板带了6个IO口，4个ADC，I2C通信结构等资源，已经能应付很多控制场景了。 使用VScode + platformIO ， 在Arduino框架下进行开发。睡眠模式探究

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PIP and CONDA Add and Remove Mirror Source 配置软件源

First, PIP 1, add a source For example, add SJTU Source https://mirror.sjtu.edu.cn/pypi/web/simple： pip config set global.index-url https://mirror.sjtu.edu.cn/pypi/web/simple If SET has multiple times, it seems to be only saved the mirror source of the last set. 2, delete the source pip config unset global.index-url 3, check which source now pip config list Second, Conda 1, add a source For example, Tsinghua Source: conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/ conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/ conda config --set show_channel_urls yes SJTU: conda config --add channels https://mirror.

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Use Short Passwords On MacOS Big Sur. FOUR Characters Not Required.

Use Short Passwords On MacOS Big Sur. FOUR Characters Not Required. If you’re an Apple user and have macOS Big Sur, Catalina or Mojave installed on your machine you’ve probably realized you can’t use a password shorter than 4 characters anymore… Luckily, here is the easy fix. 1. Open “Terminal” on your machine. 2. Type this command & press Return (enter): `pwpolicy -clearaccountpolicies` 3. Terminal will ask you to enter the password for your admin profile. Terminal WILL NOT show the password as you type it.

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win10双线网络设置

++++++ 双线网络设置 ++++++++ Wlan 设置跃点数1 [重要] 说明：这个使0.0.0.0的路由冲突时，可以优先走wlan 几个命令： 查看本机ip等信息： ipconfig 查看Route信息：route print 配置route信息： route -p add 172.23.0.0 mask 255.255.255.128 172.23.15.129 临时添加（不带-p）： route add 172.16.0.0 mask 255.255.255.128 172.23.15.129 route add 172.16.0.0 mask 255.255.255.128 172.16.99.86 ++++++++++++++++++++++++++++++ 2021年9月6日10:31:47更新： 1. 首先删除默认路由 0.0.0.0： route delete 0.0.0.0 2. 添加默认外网路由： route add -p 0.0.0.0 mask 255.255.255.0 192.168.1.1 说明： 192.168.1.1 (是你的外网网关) 这里会造成0.0.0.0的路由冲突（机器重启后），还是通过wlan的跃点数来设置！！ 3. 添加内网路由： route add -p 10.16.0.0 mask 255.255.128.0 10.16.0.1 说明：10.16.0.0 - 内网ip分配到的是 10.16.36.9， 这里取前2段，意思是这个网段内（内网网段）就走内网的网关10.16.36.9 。。。如果你的内网ip是 19.11.1.19， 那么相应的：19.11.0.0 此处我的ip是： IPv4 地址 . . . . . . .

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ESP8266 wifi configuration with AP mode

#ESP8266 wifi configuration with AP mode Thanks for the github repository: tzapu/WiFiManager Although we all know that we can use the AP mode to configure the wifi password for ESP8266, it still takes time to implement the specific code line by line. Now, with the help of this project, I just need to share the steps to get this project running on our own ESP8266 chip. Note that the ESP8266 SmartConfig is another covenient way for wifi password broadcasting. wifikit8 https://heltec.

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简单的python web服务器（附编码设置）

A basic web server implemented by python3.6 Note: the encoding-related configuration in line: ​ self.send_header('Content-type','text/html; charset=utf-8') 注意：python web服务器 编码问题 import csv from http.server import BaseHTTPRequestHandler, HTTPServer class handler(BaseHTTPRequestHandler): Page = '''\ <html> <meta content="text/html;charset=utf-8" http-equiv="Content-Type"> <meta content="utf-8" http-equiv="encoding"> <body> <p>Hello, I am great Chinese!</p> </body> </html> ''' def parse_csv(self): lines = [] with open('my_content.csv', 'r') as file: reader = csv.reader(file) for row in reader: lines.append(row) file.close() return str(lines[0]) def do_GET(self): self.send_response(200) self.send_header('Content-type','text/html; charset=utf-8') self.end_headers() message = self.parse_csv() #message = 'Hello beijing 北京' self.

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中国计算机学会(CCF)推荐国际学术期刊目录(2019)

#中国计算机学会(CCF)推荐国际学术期刊目录(2019) Table of contents 中国计算机学会(CCF)推荐国际学术期刊目录(2019) (数据库/数据挖掘/内容检索) （人工智能） （交叉/综合/新兴） （计算机体系结构/并行与分布计算/存储系统） （计算机网络） （网络与信息安全） （软件工程/系统软件/程序设计语言） （计算机科学理论） （计算机图形学与多媒体） （人机交互与普适计算） (数据库/数据挖掘/内容检索) 一、A类 ####### 序号 刊物简称 刊物全称 出版社 网址 1 TODS ACM Transactions on Database Systems ACM http://dblp.uni-trier.de/db/journals/tods/ 2 TOIS ACM Transactions on Information Systems ACM http://dblp.uni-trier.de/db/journals/tois/ 3 TKDE IEEE Transactions on Knowledge and Data Engineering IEEE http://dblp.uni-trier.de/db/journals/tkde/ 4 VLDBJ The VLDB Journal Springer http://dblp.uni-trier.de/db/journals/vldb/ 二、B类 序号 刊物简称 刊物全称 出版社 网址 (^1) TKDD ACM Transactions on Knowledge Discovery from Data ACM http://dblp.uni-trier.de/db/journals/tkdd/ (^2) TWEB ACM Transactions on the Web ACM http://dblp.

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中国计算机学会(CCF)推荐国际学术会议目录(2019)

中国计算机学会(CCF)推荐国际学术会议目录(2019) (数据库／数据挖掘／内容检索) 一、A类 序号 会议简称 会议全称 出版社 网址 (^1) SIGMOD ACM Conference on Management of Data ACM http://dblp.uni-trier.de/db/conf/sigmod/ (^2) SIGKDD ACM Knowledge Discovery and Data Mining ACM http://dblp.uni-trier.de/db/conf/kdd/ (^3) ICDE IEEE International Conference on Data Engineering IEEE http://dblp.uni-trier.de/db/conf/icde/ (^4) SIGIR International Conference on Research on Development in Information Retrieval ACM http://dblp.uni-trier.de/db/conf/sigir/ (^5) VLDB International Conference on Very Large Data Bases Morgan Kaufmann//ACM http://dblp.uni-trier.de/db/conf/vldb/ 二、B类 序号 会议简称 会议全称 出版社 网址 (^1) CIKM ACM International Conference on Information and Knowledge Management ACM http://dblp.

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