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“Your time is limited, so don’t waste it living someone else’s life. Don’t be trapped by dogma – which is living with the results of other people’s thinking. Don’t let the noise of other’s opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.”
By Steve Jobs

無關政治,只因道德(之前有過同名博文)

Posted on:  April 15, 2012  |   Category: Thoughts  |   No Comments

其實本已不想再用中文寫博客的了，但是最近發生的一件事情，再一次觸動了我那根憤怒的、敏感的神經——大陸正在，或者已經變成了一個沒有任何道德底線的、人們普遍心靈扭曲的危險國度。

起初我想去分析這背後的原因的，但是和我想分析的好多事情一樣，如果只看表面，會發覺造成這種局面的因素錯綜複雜：既關乎教育，又關乎經濟；既與人文素養有關，又與社會氛圍和輿論不可分割；既和單個個體的家庭環境、成長因素相聯繫，又和大環境、體制等密不可分……正如任何事情的起因都不是單一的一樣，長期的、錯綜複雜的背後原因，造就了今天這個扭曲的時代，造就了這群心靈扭曲的人。如果硬要為這個現象找一個原因的話，以我現在的洞察力，只能籠統的歸結為——體制問題。一個善的體制，或者退一步講，一個鼓勵、並保護“善”的體制，能夠逐漸培育出善良的種子；而一個腐敗的、道德淪喪的體制，則如一個死循環一樣，惡的種子會在其中生根發芽，其造就的人，再把這個體制拉向更深的道德泥潭。

…CONTINUE READING…

Some notes about step motor programming with C51

Posted on:  April 7, 2012  |   Category: Altium Designer, Robot&Electronics, Single-Chip Micro-controller  |   No Comments

Section one: The programming part.

1. For the very step motor I use, 28BYJ-48(5V DC), it moves 512 steps for rotating 360 degrees.

2. In this program, the time interval between 1ms-15ms is good for the step motor to run/stop, and the controlling of the speed performs well.

3. For the common anode 7-segment led, 0x7f lights the decimal point. So if you want to display the decimal point for a digit, just use 0x7f to do the “bit and (& in C language)” with the number you want to handle.

4. As for the external interrupts, their input pins are P3.2(INT0) and P3.3(INT1). INT0 uses the interrupt number 0, INT1 uses number 2. The timer0 interrupt uses number 1.

P.S.

interrupt number        use

0                                        external interrupt 0

1                                         timer0 interrupt

2                                        external interrupt 1

3                                        timer1 interrupt

4                                       serial port interrupt

5. EA=1 means enable global interrupts, EX0/EX1 means enable external interrupts, IT0/IT1 means the interrupts response with edge-triggered mode.

…CONTINUE READING…

Deploy GoAgent and WallProxy

Posted on:  February 7, 2012  |   Category: Computer  |   No Comments

In order to f**k the GFW and get the information we need, we need to have multiple ways to establish a proxy. A friend has already told me that using Google’s appengine to set up a proxy is both cheap and fast. However, for a long time, “*.appspot.com” cannot be accessed from my where I live, so I just abandoned this method and bought a paid VPN service. The service is good though, it’s easy to configure and compatible with multiple devices (it works perfect on my PC, android phone, and iPad). The only problem is that it is sometimes slow, maybe due to the network conditions in different places. Anyway, the Astrill VPN Service is good, if you want to try it, I can offer a link for trial, just contact me via email.

 

Ok, let’s get to our point now. In this post, I’m going to list the key steps of establishing the GoAgent and WallProxy through Google App Engine.

…CONTINUE READING…

Play with MOTO Droid 2 Global

Posted on:  February 4, 2012  |   Category: Android, Computer  |   No Comments

I got a MOTO D2G from my friend, but actually this is a broken one, first it cannot be unlocked (band lock), and its camera somehow just won’t work, even after I changed the camera module. So now these two problems seem cannot be fixed, and I just simply use this D2G as a TOUCHPAD for games and surfing the net. Lucky that its WiFi still works fine.

 

(07/02/2012)P.S. Now after a few days’ using, I found that its touch screen is also broken……the right side of the touch screen (about 5mm in width) doesn’t work…… -_-!! (I found a lot of people have the same problem.)

And also, when playing the Need for Speed 13, when using the original rom, it just plays sound and shows a white screen, however under the MIUI rom, the game just won’t run……-_-!!

 

Maybe here I take this chance to warn those who are going to buy or who have already had a D2G, pay attention to your phone, this one seems easily to be damaged.

 

The following are some tips and tools for rooting and changing its ROM, I post them here for your convenience and my future reference.

…CONTINUE READING…

First time configuration on MediaWiki

Posted on:  January 9, 2012  |   Category: Computer, Website  |   No Comments

1. Enable File Upload Function:

Edit this file

LocalSettings.php

under the Mediawiki root directory, change the parameter of

$wgEnableUploads

to be true,

then you can see that a Upload File link appears under Toolbox on the sidebar.

Also, you have to change the properties of the default upload directory “image” to allow it to be read/write.

…CONTINUE READING…

凡人

Posted on:  November 29, 2011  |   Category: Thoughts  |   No Comments

凡人

我終究是一個凡人，一個沒有背景只有背影，略有思想卻一不小心就會成為眾矢之的的凡人……

…CONTINUE READING…

Long time no update on my blog

Posted on:  November 27, 2011  |   Category: Uncategorized  |   3 Comments

It’s been a long time since the last time I updated my blog post. That is for some reasons, like the preparation of GRE and TOEFL and the application, my VPN was once expired and I didn’t renew it in time…

But the most important one is that, it seems that I have lost the desire of self expression, and I’m kind of, you know, totally disappointed in the society and country I live in. I have no more faith in it and I don’t believe that I can make a change. Though I can still make small changes in my own life and more or less give people around me some positive influences, I still feel that what I’m thinking and trying just make no sense, this society is too big and people’s minds are too hard to be changed or even influenced. And if I’m not careful enough, I may even become an enemy. In an environment that you’re either a friend or an enemy, discussion and different opinions are not tolerated and accepted, no need to mention “changes”.

But my time is limited, I still have a career to pursue, an American dream to realize……maybe that’s the case: I cannot change others life, no matter how much I care about them, but I do can change mine.

So, I’ve decided not to care about so many things any more. I only care about my self, my career and my future. The society forces me to be a selfish man and to some extent a “bad man”(at least I can conclude that from things I’ve been through), so that’s not my problem.

I do have a good heart, and I’m still gonna be a good man and do good things when the time and environment are right. But now, I only care about my future.

I’m not living to please anyone; I’m not a stupid man that will sacrifice  my benefits to feed you people’s endless appetite and desire; I’m not a prisoner of anything.

無關政治，只因道德

Posted on:  May 15, 2011  |   Category: Thoughts  |   No Comments

其實最初構思這篇文章是打算寫一篇長文的，但在做了草稿之后發覺可延展的話題太多，而且以我現在的心境，也已無心過多、過深的探討這些問題，因此就索性擱置了。可是，我偏偏又不舍得浪費這個主題，所以借著這篇博文，將最近的一些感悟簡潔的寫來，也算當作這一階段的總結，在這之后，我會短暫閉關一段時間。

…CONTINUE READING…

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Welcome to Alexander Chen's Blog. This blog is about a little bit everything, but mainly focuses on my thoughts, and some computer and smart device tips.

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