migrate from https://cmakerhk.wordpress.com/2018/09/28/data-type-transistion/

char *  itoa ( int value, char * str, int base );

itoa() is not officially in compiler, some have that

You can make it official like that:

#inlcude –> itoa

#include –> sprinf

• sprintf(str,"%d",value) converts to decimal base.
• sprintf(str,"%x",value) converts to hexadecimal base.
• sprintf(str,"%o",value) converts to octal base.

Example 

sprintf(disData,”%d %d %d %s %s %s %s %s %s %c”,sound[0],sound[1],sound[2],ppm[0],ppm[1],ppm[2],c_pmDen,c_hum,c_temp,c_alarm);
Serial.println(disData);
//Turn all the data to disData as String!!

http://www.cplusplus.com/reference/cstdio/

Technology-Note

CLI program

• curl
• httpie

  Python

• Traits & TraitsUI
• Cython
• ipython
• JupyterLab
• uPython (MicroPython/ CircuitPython)
• Pyserial
• yfinance: Yahoo! Finance market data downloader

  Media

• OpenCV
• PIL
• Piddle: A Python Graphics API
• ReportLab: An Open Source Python library for generating PDFs and graphics.

  Network

• Tornado: a Python web framework and asynchronous networking library
• Twisted: An event-driven networking engine
• Django: The Web framework for perfectionists with deadlines
• Pyramid: The Start Small, Finish Big Stay Finished Framework
• Flask: a lightweight WSGI web application framework

  Gaming

• Panda3D
• Renpy
• Bigworld

  Machine Learning / Big Data / Scientific Calculation

• NumPy
• SciPy
• SymPy
• Matplotlib
• Pandas
• Scikit-Learn
• TVTK & Mayavi : Visualization Toolkit.

  Markdown

• Notes

  Web Tech

  Javascript

• P5.js: JavaScript library for creative coding
• ML5.js: Friendly Machine Learning for the Web
• Brain.js: GPU accelerated Neural networks in JavaScript
• Tensorflow.js: library for machine learning in JavaScript
• Babylon.js: Powerful, Beautiful, Simple, OpenWeb-Based 3D At Its Best
• Matter.js: a 2D physics engine for the web
• Email.js: Send Email Directly From JavaScript
• smtp.js
• tangible.js
• johnny-five
• involt
• nw.js
• Google Chart
• Rollup.js: The JS module bundler
• Protocol buffers: language-neutral, platform-neutral extensible mechanism for serializing structured data.
• D3.js: JavaScript library for manipulating documents based on data
• JerryScript: A JavaScript engine for Internet of Things
• IoT.js: A framework for Internet of Things

Web Framework

• Hexo.io: A fast, simple & powerful blog framework
• Flutter: Beautiful native apps in record time by Google
• Weex: Framework for building performant mobile apps with modern web technology by Alibaba
• Ant Design: The world’s second most popular React UI framework
• React native: A framework for building native apps using React by Facebook
• Cordova: Mobile apps with HTML, CSS & JS
• Reveal.js: The HTML Presentation Framework
• Webslide: HTML presentation
• Vue.js: The Progressive JavaScript Framework
• Express.js: Fast, unopinionated, minimalist web framework for Node.js

  Web API

• Rapid API: One SDK. One API key. One dashboard
• udpapi
• elastic email

  Web Tools

• Glitch: Online web editor
• Observable: magic notebook for exploring data and thinking with code

Hardware

• Jetson Nano
• Jetson TX2
• Arduino
• STM32
• Alchitry:Introduction to Digital Electronics and FPGAs
• Sipeed: AIoT enabler
• ARM
• NXP
• TI

  PCB Tools

• Fritzing: Makes electronics accessible as a creative material for anyone
• KiCad: A Cross Platform and Open Source Electronics Design Automation Suite
• Eagle
• EasyEDA: Online PCB design & circuit simulator
• EveryCircuit: Circuits are better animated
• Circuit Simulator Applet
• Upverter: Electronics Design for Anyone and Everyone
• PADS
• Altium

IoT/Embedded

• ThingsBoard: Open-source IoT Platform
• OneNet (by CMHK)
• QQ IoT
• Huaiwai OceanConnect
• Nokia IMPACT
• MS Azure
• AWS IoT platform
• IBM Waston IoT
• Google Cloud
• IFTTT: Every thing works better together
• ThingSpeak: the open IoT platform with MATLAB analytics.

  Operator

• Thingsmobile: Things Mobile: The best IOT and M2M SIM Card in the world
• Thinxtra: OPERATING THE FIRST NATIONWIDE INTERNET OF THINGS NETWORK, BASED ON SIGFOX TECHNOLOGY
• Pixel Networks
• OrbiWAN
• The Things Network: Building a global open LoRaWAN™ network
• Chirp Stack: open-source LoRaWAN® Network Server stack

  Hardware enabler

• EByte
• SIMCOM

  Communication Protocol

• HTTPS
• MQTT
• Websocket
• CoAP
• XMPP: Extensible Messageing and Presence Protocol
• LoRa
• NB-IoT
• Sigfox
• GSM
• IP-Network
• Zigbee
• Bluetooth
• Wi-Fi
• lwIP

  Mirco OS

• ARM mbed OS
• Contiki OS
• Zephyr
• Huawei LiteOS
• Ostro
• RT-Thread
• Android Things
• uC/OS
• FreeRTOS
• OpenWRT
• Embedded Linux
• Zerynth

  Program/Service

• Octotree: GitHub on steroids
• Localtunnel: Expose yourself to the world
• Ngrok: Public URLs for testing on mobile devices.
• etcher
• Deskpin
• Advanced REST client
• MD to Web

  Development Tools

• hterm
• RPA uipath
• mouse recorder
• wireshark
• PuTTY
• AutoHotKey
• Temper monkey
• VMware
• Cypress.io

  Maths Tools

• octave
• online octave
• matlab
• geogebra
• colab
• Maxima

  Creative content

• Adobe
• Sony Vegas
• GIMP
• INKSCAPE
• Blender

  Web Platform

• Agorize
• Hackster.io: The community dedicated to learning hardware
• Github: The world’s leading software development platform
• Gitlab: The first single application for the entire DevOps lifecycle
• Gitee/碼雲: Collaboration platform for software development
• Kickstarter
• Indiegogo: Crowdfund Innovations & Support Entrepreneurs
• Crowdsupply: For the Greater Goods

  Blog

• EEVlog
• 吴川斌的博客

Archive

• Google Presentation
• Library Genesis

  Data science

• Github Link

Blockchain & new Tech

• ZeroNet: Decentralized websites using Bitcoin crytography and the BitTorrent network
• Bitcoin - https://bitcoin.org/
• Abra - https://www.goabra.com/
• Provenance - https://www.provenance.org/
• Fluent (Rebranded to Hijro) - https://hijro.com/
• SKUChain - https://skuchain.com/
• Blockverify - http://www.blockverify.io/
• Augur - https://augur.net/

  Networking and IoT

• Adept - http://www.coindesk.com/ibm-reveals-p…
• Aeternity - https://www.aeternity.com/
• Arcade City - https://arcade.city/
• La’Zooz - http://www.shareable.net/blog/lazooz-…
• Innogy - https://bitcoinmagazine.com/articles/…
• UBS - https://www.ubs.com/microsites/blockc…
• ZF - http://www.econotimes.com/UBS-bank-in…

  Online Data Storage

• Storj - https://storj.io/
• IPFS - https://ipfs.io/
• BitGive Foundation - https://bitgivefoundation.org/
• Democracy Earth - http://democracy.earth/
• Follow My Vote - https://followmyvote.com/
• GovCoin - http://www.businesswire.com/news/home…
• Dubai Blockchain Strategy - http://www.smartdubai.ae/dubai_blockc…
• Circles - aboutcircles.com
• Gem - https://gem.co/
• Tierion - https://tierion.com/
• TransactiveGrid - http://transactivegrid.net/
• Mycelia - http://myceliaformusic.org/
• Ujo Music - https://ujomusic.com/
• OpenBazaar - https://www.openbazaar.org/
• OB1 - https://ob1.io/
• Ubitquity - https://www.ubitquity.io/
• Consensys - https://consensys.net/about/
• Ethereum - https://www.ethereum.org
• ++
• WING: Wireless Mesh Network for Next-Generation Internet

• Sketchy

• tindercad

• TensorFlow

• Thank

• CMTK

• Kaldi

• PyTorch

• Map Reduce

.bat that push to the github

1
2
3

$ call hexo clean
$ call hexo generate
$ call hexo deploy

Create a new post

1

$ hexo new "My New Post"

Setup

Hexo setup is highly follow with the following github blog by William Lun with his post. I change the installation of hexo with global flag

1

$ npm install -g hexo-cli

Welcome to Hexo! This is your very first post. Check documentation for more info. If you get any problems when using Hexo, you can find the answer in troubleshooting or you can ask me on GitHub.

Quick Start

Create a new post

1

$ hexo new "My New Post"

More info: Writing

Run server

1

$ hexo server

More info: Server

Generate static files

1

$ hexo generate

More info: Generating

Deploy to remote sites

1

$ hexo deploy

More info: Deployment