Warnung vor look-alike Webseite Bufdi.eu: Ein Erfahrungsbericht.

Ich habe keine solche Erfahrungsbericht über bufdi.eu im Netz gefunden. Da das so ein ärgerlicher Fall gewesen ist, wollte ich gern darüber berichten.

Eine Freundin war neulich verzweifelt. Im Auftrag ihres Vereins sollte sie einen Bufdi suchen. Im Eifer des Gefechts, hat sie sich bei www.bufdi.eu angemeldet, und sich anscheinend auf eine sogenannte Vertragsfalle eingelassen. 

Upgrading GNU Emacs 24.3.1 org-mode 7.9.3f to the latest version on Windows

All the young dudes,

as of today the current pre-built release of GNU Emacs is 24.3.1

http://ftp.gnu.org/gnu/emacs/windows/

...which has a pretty old version of org-mode (which can't export to latex beamer-->BARF!)

There is some documentation on upgrading org-mode at http://orgmode.org/worg/org-8.0.html, but what you need to know is this:

1. Close all Emacs windows

2. Open a fresh Emacs

3. M-x package-install RET org

4. M-x package-initialize

5. Verify installation with M-x info, and click on org-mode

...and you're done! I now have version 8.2.7c and can M-x package-initialize l p til the cows come home!

Yours,
che

The german "Betragsoptimum" is apparently called "modulus optimum" in english

In my German courses on electrical drives, they taught us that the Betragsoptimum method for tuning a control loop, where the controlled system has one "dominant" time constant (higher or larger than all others), which is compensated/cancelled directly by the controller.

Though difficult to find on the Google WORLDWIDE-INTERNET-WEB®, this seems to be called modulus optimum (or, perhaps also "absolute value optimum").


English Sources:

Bajracharya, Molinas, Suul, Undeland, "Understanding of tuning techniques of converter controllers for VSC-HVDC", NORPIE 2008
(https://aaltodoc.aalto.fi/bitstream/handle/123456789/814/urn011658.pdf)

http://www.eal.ei.tum.de/fileadmin/tueieal/www/courses/bdgea/lecture/WS1112/Regelungsskript_eng.pdf
German Sources:

http://daten.schule.at/dl/Betragsoptimum.pdf

https://www.eal.ei.tum.de/fileadmin/tueieal/www/courses/bdgea/lecture/WS1112/Regelungsskript_deutsch.pdf

Accessing Generic Port on a Xilinx Schematic

 It took me a while to figure out how to access the generic port map of a VHDL entity within the schematic view, so now that Ive managed it, heres a new post about it!

The schematic editor included in Xilinx's ISE isnt very user friendly, though the concept of using a schematic to "program" your FPGA or CPLD is not a bad one... especially using a schematic for the top-level structural design allows you to have a good overview of the overall program structure. But, schematics are yuppy, and yuppies must pay for their fancy user-friendly graphical tools, no? So, lets do what we can with what we've got...

Beginners OMAP-L138 ARM Tutorial

Dear All Y'all

todays exercise: writing your very first program for the new, dual-core (one ARM9 core and one C6000 series DSP core), TI applications processor, the OMAP-L138. This simple tutorial is for the ARM core, and here are the boundary conditions:

• Windows 7, 64-bit
• Code Composer Studio 4.1.1 (with the free limited license)
• Low-cost XDS100v2 USB Emulator 

Order component designators sequentially in Altium Designer

Heres one thing that I often have to do and always forget how it went.

Its annoying, but we're gonna have to deal: when you place components in Altium, the component designator is NOT automatically set to be the next one in sequential order. Ie, you just finished placing a few 0805 package resistors, the final one with the designator R105, and you switch to a MELF resistor. As long as the parts you are placing have the same component name (and perhaps the same logical symbol), the numbering of the designators will take up where you left off, with R106. If you start using a component with a NEW name, suddenly Altium doesnt suggest designator R106, but rather 'R?'. Yep.. annoying.

Good news, this can be easily fixed:

1. Tools >> Annotate Schematics
2. Click Reset All to reset all designators to R?
3. Click Update Changes List to generate new proposed designators
4. Click Accept Changes --> Execute Changes

This feature is documented on the Altium Wiki under Annotation and Re-Annotation.

Josh Sully (Avatar) is the American Taliban

Dear all y'all -

I'm behind the times: I just got back from my first viewing of Avatar. One syllable: rock.

Firstly, it must be said that this film doth penetrate (er... penetrateth?) deep the heart of Chicken Freighter with its main theme of nature versus machinery. But, lets face it, I don't want to take the time to write about that, and you, Websurfer0xF2A910EE, obviously aren't going to have more than 47 seconds to read a blog entry.

So on to my Hauptanlegen: Josh Sully is clearly a representation of the American Taliban, John Walker Lindh. Heres why...