MATLAB 之工程應用

查詢命令:
site:bime-matlab.blogspot.com/ plot

site:bime-matlab.blogspot.com/ linespace

site:bime-matlab.blogspot.com/ 冒號

site:bime-matlab.blogspot.com/ 矩陣

site:bime-matlab.blogspot.com/ 矩陣 元素相加

http://bime-matlab.blogspot.com/

• 第一章　MATLAB簡介
• 第二章　矩陣製作
• 第三章　程式結構與設計
• 第四章　內建函數
• 第五章　資料結構
• 第六章　自訂函數
• 第七章　資料之輸出入
• 第八章　多項式之應用
• 第九章　繪圖
• 第十章　聯立方程式解
• 第十一章 統計與迴歸
• 第十二章 數值法與微積分
• 第十三章 圖形介面

反聖嬰發威 學者警告颱風和洪災

台灣醒報 (2010-10-14 09:35)
        反聖嬰年氣候異常，近來印尼、越南、孟加拉等地，因熱帶低氣壓造成嚴重洪災，台灣也拉警報。多位受訪學者專家均強調，今年年底可能還會有颱風甚至是東北季風來襲，並且夾帶旺盛水氣，恐造成非常嚴重的災情，政府和民眾都應多加留意。

2012當科學遇上預言

    全球的自然災難發生頻率越來越高，馬雅人2012的預言難道會成真？科學家是如何看待這個預言？到底2012年會發生什麼事？

100個美麗家園岌岌可危

 

100個美麗家園岌岌可危／汪中和

在地球的任何角落，如今都可以感受到天氣激烈變化所帶來的影響。

以二○○九年為例，八月初台灣的莫拉克颱風所帶來的豪大雨重創南台灣，也是半世紀以來傷亡最慘重的水災，小林村一夕消失。八月二十七日，中國四川重慶一夜之間，天空閃電高達一萬一千四百七十一次，居民難以入眠。

期待「Win 8」與ARM的天作之合

 Windows 7 熱度還很高，現在卻已經開始預測下一件大事──但事實是:這些年來並沒有出現一個引起市場熱潮的 Windows 版本，而ARM的支援可能正是微軟(Microsoft)非常需要的。

如果未來的Windows 8能與ARM聯姻，將會是天作之合；這樁婚事可替微軟打開一扇門，得以進軍從一般消費性平板電腦到網咖設備等低價、低耗電產品領域。在這個節骨眼上，像是Windows這樣的專利產品若能取得一個新市場，無啻是天降甘霖。

Download the Android SDK (SW Development Kit)

 Android SDK 是GOOGLE手機軟體開發平台,可以買一支手機來玩玩喔!!!

Download address  :
 http://developer.android.com/sdk/index.html

       Welcome Developers! If you are new to the Android SDK, please read the Quick Start, below, for an overview of how to install and set up the SDK.

幹細胞再生心臟

      成大謝清河率領的研究團隊，獨步全球，以蘭嶼豬的大動物實驗證實，利用奈米纖維水膠結合自體骨髓幹細胞移植的技術，可促進急性心肌梗塞後的心肌保護與血管再生，讓壞死的心肌長出新血管，成功治療豬的急性心肌梗塞，創全球首例。

人類第六感官 : 速度感官

 
  馬來西亞大學的10歲混血兒神童艾南，兩年前發現人類有5個感官之外的第六個感官，並花1年的時間將他的這項發現，在父親的協助下發表在網路學術期刊。

Undersampling of Modulated Signals

      According to the Nyquist sampling theorem, in order to recover a signal via sampling, the sample rate must be greater than or equal to the two time (2x) the highest frequency in the signal. Doing so prevents aliasing due to frequency foldback about the 0 Hz (DC) axis. So, if you were digitally sampling a human voice with a maximum frequency content of, say, 6 kHz, then your sampling rate would need to be at least 12 kHz. In practice, the sample rate used is a little higher to provide a buffer, and a lowpass filter is placed in front of the A-to-D converter to make certain that higher frequency content does not make its way into the converter and subsequently get translated into an aliased (false) component. The concept applies to digital signals as well as with analog signals.

Fuzebox : Open source 8-bit game console

Introducing the Fuzebox

The WEATHER RECORDER

This project is only for experienced home builder.

Front view


  The narrow trace is the outside temperature graph.
  The wide trace is the pressure graph.

碳粉熱轉印法 (Toner Transfer) 製作 微控製器PCB

中文 : http://www.qsl.net/bv3fg/tech/TTPCB.htm
中文詳細說明 : http://gc.digitw.com/Circuit/PCB-BY-TRANS.pdf
Make your own Microcontroller PCB using the Toner Transfer Method

   As the electronics hobbyist one of knowledge that we have to be familiar with is how to make our own printed circuit board (PCB). Making our own simple single side PCB actually is not require a sophisticated technique and technology as you might think, instead most of the required materials is already available at your home. I’ve started make my first single side through-hole PCB for a simple two transistors astable multivibrator project using just a water proof marker and draw the PCB layout directly on the PCB copper surface.

Building your own Simple Laser Projector

The 8 pins PIC12F683 microcontroller is one of the smallest members of the Microchip 8-bit microcontroller families but equipped with powerful peripherals such as ADC and PWM capabilities. This make this tiny microcontroller is suitable for controlling the DC motor speed. In order to demonstrate the PIC12F683 capabilities and to make this tutorial more attractive, I decided to use the PIC12F683 microcontroller to generate simple and yet fascinating laser light show from a cheap keychain laser pointer.

The basic of laser light shown in many entertainments club or park mostly use two method; the first one is to beam the laser shower on the spectators and the second one is to display the laser drawing pattern on the screen. On this tutorial we are going to build the laser projector that displays the spirograph pattern on the screen using the tiny Microchip PIC12F683 microcontroller.

Atmel MP3 player

http://mcu.cz/news.php?extend.1803.7
Atmel MP3 player

AVR JTAG Debugger/Programmer

http://www.avrportal.com/?page=jtag

AVR JTAG : Credit to IsoJtagIsp for schematic and bootloader. I've been modified a schematic from IsoJtagIsp by remove USB interface from schematic because I'd like to use AVR JTAG with USB2RS232 and serial port.
















AVR JTAG schematic.
    Download bootloader onto ATMEGA16, If you don't have a AVR programmer I recommended a simple

Eagle3D

Some time ago there was a question in one of the Eagle-Newsgroups if it is possible to translate the 2D-layout into a 3-dimensional view. It was not possible. So I started the development of Eagle3D. After a couple of days I had an ULP and a library with 3D-POVRay models of electronic components. Out of a board like this:

ISO JTAG ISP programmer

ISO JTAG ISP programmer

JTAG header pinout:
1: TCK	2: GND
3: TDO	4: VCC
5: TMS	6:
7: VCC	8:
9: TDI	10: GND
ISP Programming header pinout:
1: SCK	2: GND
3: MISO	4: VCC
5: RESET	6:
7: VCC	8:
9: MOSI	10: GND

Atmel AVR USBisp

The USBisp is another AVR programmer. Compared to the other freely available programmers out there mine has some advantages, I think:

• USB-Interface

The USBisp is very interesting on notebooks where no serial or parallel port is available

• STK500-Protocol

太陽循環衰退期

       太陽活動的衰退期不但不會如預期般造成地球冷卻，反而可能讓地球更溫暖。這項驚人的發現不僅徹底改變科學界對太陽週期的認識，還有助於解釋極端的地方天氣型態。這篇研究預定七日發表於「自然」期刊。

UEFI:-統一可延伸韌體介面

       未來電腦開機只要數秒即可完成！已完成適用電腦的「統一可延伸韌體介面」 (UEFI)技術，將取代長達25年之久的BIOS技術。

      未來透過UEFI 技術（統一可延伸韌體介面），從開機到使用電腦只需短短數秒鐘，根據UEFI 論壇主管多倫表示，「有了這項新技術，開始只需幾秒鐘，雖還不是即時，與傳統BIOS 速度比較，已經超出許多，」自1979年開始應用在開機的BIOS ，也將宣告功成身退。

好書報報-----看得到的化學

你知道香蕉也有放射性嗎？「鑽石恆久遠」只是一句並非事實的廣告詞嗎？「看得到的化學」書中除了有很多漂亮的化學元素照片，也有不少打破一般人迷思的內容。

磁鐵干擾大腦後頂葉皮質區腦細胞

美 國科學家近日發現，只要用一小塊磁鐵，就能將慣用右手的人瞬間變為左撇子。

AVR Studio 入門教學

from: http://www.avrtv.com/

     In this AVR TV In-depth, we present a basic, but close look into AVR Studio; the FREE development suite for Atmels 8-bit MCU range.
     NB! The flash videos are bit small for full-screen captures. So please download the H.264 file for a full 768×576 video. Find the source file for the LEDchaser here.

you can download the video here:
http://www.avrtv.com/mint/pepper/orderedlist/downloads/download.php?file=http%3A//www.avrtv.com/wp-content/avrtvIssues/avrtv_issue_009/avrtv_issue_009.mov

Arduino 入門教學

home page: http://arduino.tw/index.php
入門教學: http://arduino.tw/whatsarduino/novice.html

Procyon AVR C Library

C-Language Function Library for Atmel AVR Processors

• AVRlib is a library of easy-to-use C functions for a variety of common and uncommon tasks using AVR processors.
• The goal of AVRlib is to allow programmers to work quickly towards their end goal by reducing the time needed to write basic support functions and code.
• Most AVRlib header (*.h) files have lengthy descriptions of how to use the supplied library functions. All code (*.c) files are heavily commented with additional information.
• Documentation is still being improved and refined on many libraries. When getting familiar with a library, look first at the HTML docs and any example code that is available in the examples directory. Then look inside the *.h and *conf.h files, and then the *.c file for that library for more details and documentation.
• Significant example code is included in avrlib.zip. The example code is heavily commented and strives to illustrate how to use various AVRlib function libraries.
• Download AVRlib (with docs and code examples) 
  • AVRlib (zip file, 1.5MB, Sunday October 29, 2006 )
  • AVRlib (win32 installer package, 1.5MB, Sunday October 29, 2006 )
• On-line HTML Documentation