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《思学篇》
序： 今吾留学已逾二载，尚且彷徨。观乎同辈，或有身兼中西之学，文理书乐皆通，踌躇满志者，窃以为不如。 吾温顺静思，非浪荡轻浮之人，奈何拘于家学见闻。究其根本，盖教育环境之异。 吾祖世代或农或商，非书香门第，几无藏书，唯《本草》《毛选》，皇历账本数册而已，想儿时亦无此趣。闲暇务农而少游冶，亦无良师益友导引。既入大学，尚忧衣食。而后随波逐流，年华暗换，而立之年近，尚且浑噩。...
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using raspberry pi and beaglebone launchpad as USB-uart
note collected from internet source =================================== Raspberry pi, uart should pin is enabled by default? yes Raspberry Pi’s Mini-UART Warning: Misleading information ahead – See...
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Allyoyn 14.12 compiled on raspberry pi and ubuntu
ref: [blog.csdn.net/huangjuegeek/article/details/38515445] get soruce code $ sudo tar -zxvf alljoyn-suite-14.06.00_beta-src.tar.gz -C /opt $ cd /opt $ sudo mv alljoyn-suite-14.06.00_beta-src...
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raspberry pi 2 is tested in compressed air vessel working at 5bar
Recently, as a byproduct of exp work in Ox Uni, I tested raspberry pi 2 works at 5 bar, it could work at higher pressure but not tested. All the rpi 2 use no electrolytic capacitor (all components...
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readonly root file system for raspbian
crash of SD card file system make me crasy, so I need to to sth! [crayon-565737d4e81f9400855781/] [crayon-565737d4e8204505069773/]
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smoother python 2.7 to 3.x transition (scite as IDE)
I aim to write code in python script, most of time, single file script, to run on both 2.x and 3.x with my favorite light-weighted IDE scite. So here is my setup 1.default python 2.7 anaconda, setup...
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Electronics under extreme environment (high temperature, low temperature)
Electronics under extreme environment Collection of public resource, product catalog, NASA presentation, etc
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Gmail backup to your google drive using app script (isenensor.com)
Link to my google spread sheet with script: Gmail backup isenensor.com https://docs.google.com/spreadsheets/d/1vcQ-dJ_9iEmISLDnDjAFWrb4zcGOhEJzIJmMoq_MLYQ/pubhtml
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Ten things you must do after install Openwrt 15.05 on raspberry pi B
This is not a tutorial, but list some interesting things for Openwrt 2015-09-14 by Qingfeng Xia 1. install the image by dd on linux, or ImageWriter in windows on linux, the partition can be extened to...
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What is the max array size you can declare (big data challenge)
by Qingfeng Xia @ iesensor.com 2015 With the popularity of BIG DATA concept, have you think about what is the max data structure you can...
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Using paraview to visualise vorticity (Lambda2, vorticity, Q-Criterion)
Please download the word document, which contains the details on setting up the Python Calculator filter to calc lambda2, and use the advanced option of ‘Gradient’ filter to calculate vorticity,...
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Why power adapters for laptop are NOT compatible
see the word document contains figure to demonstrate various power adapters from diff manufacturers and how the claimed incompatible adapter could be reused. why laptop power adapter are not...
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Solve CFD via OpenFOAM in free CAx platform FreeCAD
Recently, I have been developing a module for FreeCAD, to solve CFD problem in FreeCAD graphical user interface. the source code can be found at :...
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A recommendation for free of charge 2D CAD and office system, also...
for office system, I recommend kingsoft WPS office, which is based on Qt, much faster than java based solution. It has Android, Linux version in alpha, in addition to mature windows ‘s version...
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Introduction to Industrial IO (sensor framework for Linux)
introduciton to Industrial IO overview of industrial IO. In short, SPI and I2C sensor framework for Linux sensor categories: “ADC, DAC, light, accel(erometer), gyro, magnetometer, humidity,...
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Toshiba L650 laptop disassembling
I got a 5 year old laptop, it does not boot, no screen show, no beeping. So I need to disassemble and check. Generally, this laptop is easy to repalce harddisk or memory on the back. And the...
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disable windows input method hotkey
UPDATE: it seems the following methods still fails, as restart pc or windows update will invalidated the setting =========== Avoid the annoying hotkey to trigger the IME shape/punctation in Chinese...
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Evaluation of OpenFOAM on bash on Ubuntu on windows 10
## installation After Anniversary Build (2016 Aug) for x65 windows 10, it is possible to evaluate this beta feature in developer mode without upgrade to claimed unstable insider version. see detailed...
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Mibox 2 install youtube and play to kodi (just as chromecast)
1. install shafa TV manager and/or ES file explorer to be enable install apk from USB/SD card http://www.shafa.com/articles/yWNpNK6erhB6Q4dO.html 2. install Kodi/XMBC apk from shafa’s file manager (in...
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compile c++ codes using Visual C++ Build Tools from the command prompt
Introducing the Visual Studio Build Tools “If you have installed Microsoft Visual C++ Build Tools 2015 on Windows 10, open the Start menu and choose All apps. Scroll down and open the Visual C++ Build...
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