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by Jim Manley
Sat Mar 31, 2012 8:25 am
Forum: General discussion
Topic: How do I run Debian for ARM in windows and compile code?
Replies: 45
Views: 9462

Re: How do I run Debian for ARM in windows and compile code?

<t>For complete novices, VirtualBox makes the process pretty much point-and-click and provides a simpler way to manage multiple environments in pretty much any OS except Mac OS X. I don"t know whether QEmu provides self-adjusting virtual disk volumes that appear to Windows as a single file that can ...
by Jim Manley
Sat Mar 31, 2012 8:01 am
Forum: Gaming
Topic: R-Pi Massively Multiplayer Online Role-Playing Games (MMORPG)
Replies: 312
Views: 100302

Re: R-Pi Massively Multiplayer Online Role-Playing Games (MMORPG)

<t>As the evidence keeps mounting that yes, Virginia, there really are 10,000 R-Pi boards Out There and we can now increasingly hope that hundreds of thousands more will be delivered over the next few months. As this growing reality has started to sink in, I"ve begun thinking about some very cool th...
by Jim Manley
Sat Mar 31, 2012 4:46 am
Forum: General discussion
Topic: abbreviations
Replies: 35
Views: 11992

Re: abbreviations

Yeah, all those TLAs can get confusing (TLA is a long-standing military acronym for ... wait for it ... "Three Letter Acronym"! ).
by Jim Manley
Sat Mar 31, 2012 4:37 am
Forum: General discussion
Topic: How do I run Debian for ARM in windows and compile code?
Replies: 45
Views: 9462

Re: How do I run Debian for ARM in windows and compile code?

<r>Read this thread to learn how to run an emulation of the R-Pi ARM hardware with Debian on QEmu, inside VirtualBox running on Windows:<br/> <br/> <URL url="http://www.raspberrypi.org/for.....-added-cow">http://www.raspberrypi.org/for.....-added-cow</URL> (Special thanks to nmcc for providing this!...
by Jim Manley
Sat Mar 31, 2012 3:54 am
Forum: General discussion
Topic: New post on the front page - more photos!
Replies: 19
Views: 4942

Re: New post on the front page - more photos!

<t>I think a scathingly brilliant idea would be for every single R-Pi recipient to post a photo of their shiny new board sitting on the front page of the receipt-day"s issue for the most local newspaper at the recipient"s location, and the post should be copied to a single topic thread in /. Oh, and...
by Jim Manley
Sat Mar 31, 2012 3:35 am
Forum: General discussion
Topic: Interesting Thing I found on eBay.
Replies: 16
Views: 5234

Re: Interesting Thing I found on eBay.

<t>I was aware of DC-DC voltage converters (the idea of a step-up converter without a transformer seems positively like voodoo ), but, hadn"t really looked closely at any, and the LM2596-based units for ~$2.50 seem too good to be true, especially with free shipping. I assume that, since these chop u...
by Jim Manley
Fri Mar 30, 2012 6:20 am
Forum: General discussion
Topic: Interesting Thing I found on eBay.
Replies: 16
Views: 5234

Re: Interesting Thing I found on eBay.

<t>I seem to recall that the alpha boards could take something like 6 ~ 20 volts, but, I don't know whether they had additional regulation on the board to handle the higher voltage.  When they went to the micro-USB power jack, then 5 volts became the only supply discussed.<br/> <br/> James, or anyon...
by Jim Manley
Fri Mar 30, 2012 3:53 am
Forum: General discussion
Topic: Interesting Thing I found on eBay.
Replies: 16
Views: 5234

Re: Interesting Thing I found on eBay.

<t>Battery voltage varies with current drain, and measuring the open-circuit (aka no-load) voltage will not be the same as the closed-circuit (loaded) voltage due to the fact that batteries have internal resistance.  Hence, there is an internal voltage drop within each battery proportional to the lo...
by Jim Manley
Fri Mar 30, 2012 12:16 am
Forum: General discussion
Topic: Virtual Raspberry Pi
Replies: 10
Views: 6031

Re: Virtual Raspberry Pi

<r>Here's a more specific answer, since just searching for qemu and debian will return a lot of extraneous old cruft:<br/> <br/> A matrix of the Linux ARM distributions now available for the R-Pi and in development:<br/> <br/> <URL url="http://elinux.org/RPi_Distributions">http://elinux.org/RPi_Dist...
by Jim Manley
Thu Mar 29, 2012 4:09 pm
Forum: General discussion
Topic: The Embedded Systems Conference & Exhibition - Silicon Valley
Replies: 5
Views: 1504

Re: The Embedded Systems Conference & Exhibition - Silicon Valley

<t>For those interested, I am coordinating hosting of local area R-Pi user groups at the Computer History Museum in Mountain View (where I'm a senior docent, artifact restoration engineer, and historian, including a presenter and operator of the Babbage Difference Engine) once we have our boards in ...
by Jim Manley
Thu Mar 29, 2012 10:58 am
Forum: Staffroom, classroom and projects
Topic: Pygame
Replies: 29
Views: 8697

Re: Pygame

<t>Given that it's realistically going to be Fall 2013 before R-Pi systems are going to be available in sufficient numbers in time for typical school budget planning/acquisition cycles, we might as well just go with 3.x.  In addition, there's the ramp-up time needed to train just the teachers with s...
by Jim Manley
Wed Mar 28, 2012 4:22 am
Forum: General discussion
Topic: 1950 Over Siberia
Replies: 50
Views: 8034

Re: 1950 Over Siberia

Soooo ... it appears that time has finally just stopped altogether ...

Well, I suppose that"s one way to meet a deadline ... just stop time until a very hot place becomes very cold
by Jim Manley
Tue Mar 27, 2012 7:54 am
Forum: General discussion
Topic: New RS Email - Compliance?
Replies: 100
Views: 24734

Re: New RS Email - Compliance?

<t>Newark US made two $1.00 charges against my card last week, so, they _are_ taking money from people already, albeit not the full amount for the board. Indeed, it"s not even a majority of the exhorbitant shipping and manhandling charges for a single board, with no option for combining multiple cus...
by Jim Manley
Mon Mar 26, 2012 7:18 pm
Forum: General discussion
Topic: About power supply and peripherics
Replies: 22
Views: 5673

Re: About power supply and peripherics

<t>Abishur said: <br/> <br/> <br/> what"s the word?  voltage back-flow protection? (can I get a better word for that? it"s slipping my mind)<br/> <br/> <br/> We generally call it "reverse current protection" on this side of the pond, which also covers Murphy"s Law situations like customers inserting...
by Jim Manley
Sun Mar 25, 2012 6:42 am
Forum: General discussion
Topic: Post your estimated arrival dates
Replies: 323
Views: 67919

Re: Post your estimated arrival dates

<t>My credit card got pinged by Newark U.S. for two $1.00 holds on Friday! That strongly suggests that they are seriously close to charging my card for the actual purchase when my (mine! All MINE!!! ) board will reportedly ship this coming Friday, March 30th, according to the order submission update...
by Jim Manley
Thu Mar 22, 2012 8:27 am
Forum: General discussion
Topic: Post your estimated arrival dates
Replies: 323
Views: 67919

Re: Post your estimated arrival dates

<t>Just received word from Newark/Farnell/Element 14 (U.S.) that they are ready to charge my credit card and ship my R-Pi on March 30th!  I pre-ordered on February 29th at 08:16 GMT, about two hours and 16 minutes into the fray, after continually failing to be able to get complete web pages to be se...
by Jim Manley
Mon Mar 19, 2012 8:05 am
Forum: General discussion
Topic: How to Find Forum Posts in Old(?) "forum?mingleforumaction=viewtopic&t=" Format?
Replies: 1
Views: 591

Re: How to Find Forum Posts in Old(?) "forum?mingleforumaction=viewtopic&t=" Format?

<r>I came across this link to an old post about Tcl(/Tk):<br/> <br/> <URL url="http://www.raspberrypi.org/for.....#038;t=200">http://www.raspberrypi.org/for.....#038;t=200</URL><br/> <br/> However, it just goes to the top level of the Forum page.  Anyone know how to translate this URL to the current...
by Jim Manley
Mon Mar 19, 2012 7:23 am
Forum: Staffroom, classroom and projects
Topic: Classroom Setup
Replies: 64
Views: 16282

Re: Classroom Setup

Abishur - were you, or anyone else, able to make any progress on the LVDS controller?

Thanks!
by Jim Manley
Sat Mar 17, 2012 5:30 am
Forum: General programming discussion
Topic: Educational Programming Language
Replies: 73
Views: 26700

Re: Educational Programming Language

<r>There are other threads on this subject of the "best" programming language for teaching kids, but, I wanted to point a few things out in response to specific previous statements.<br/> <br/> The creators of Unix and C are on record saying that, if they had known that those technologies would ever ...
by Jim Manley
Sat Mar 17, 2012 3:55 am
Forum: Staffroom, classroom and projects
Topic: Mono project
Replies: 27
Views: 14777

Re: Mono project

<t>Oracle isn't as much of an ogre as Larry Ellison is - there are other people there who get to make decisions that are in the best interests of everyone, e.g., MySQL is and always will be free, and even Oracle 11g is free for databases smaller than 1 GB (granted, probably only useful for hobbyists...
by Jim Manley
Sat Mar 17, 2012 12:10 am
Forum: Staffroom, classroom and projects
Topic: Special Education teacher here!
Replies: 8
Views: 2880

Re: Special Education teacher here!

<t>This is very do-able on an R-Pi with a touch-screen using a lightweight web server and one of the Linux built-in web browsers that comes with Fedora, Debian, ArchLinux, etc. The web pages could be written so that the displayed content could be easily edited/remotely-updated by teachers/caregivers...
by Jim Manley
Fri Mar 16, 2012 3:24 am
Forum: Staffroom, classroom and projects
Topic: Point me to the starting line
Replies: 10
Views: 2821

Re: Point me to the starting line

<t>There should be an internationalization (I18N) option built into the Linux operating systems being ported to the R-Pi that allow alternative languages to replace English in all menus, dialogs, buttons, help, keyboard layouts, etc.  When most OSes (or their installers) are booted up the first time...
by Jim Manley
Fri Mar 16, 2012 1:32 am
Forum: Staffroom, classroom and projects
Topic: Raspberry Pi - The Comic Book
Replies: 6
Views: 1881

Re: Raspberry Pi - The Comic Book

<r>Unless you know about <URL url="http://www.Archive.org">http://www.Archive.org</URL> - Brewster Kahle's Internet Archive<br/> <br/> Brewster was one of the original developers of ARPANET, the granddaddy of the Internet.  Archive.org is an attempt to archive as much of the Internet as possible, al...
by Jim Manley
Thu Mar 15, 2012 10:20 pm
Forum: Python
Topic: I heard Python's good and so's this guide .....
Replies: 8
Views: 4190

Re: I heard Python's good and so's this guide .....

http://learnpythonthehardway.org

Doing my very best Tina Turner impersonation:

"We nevah, evah, do anything nice ... and easy!"
by Jim Manley
Thu Mar 15, 2012 9:56 pm
Forum: Staffroom, classroom and projects
Topic: Solar car - A possibility
Replies: 6
Views: 2054

Re: Solar car - A possibility

<t>The USB WiFi dongles weigh less than the R-Pi and, if the commercial directional antennas weigh too much, Google "Pringles can WiFi antenna" and you'll see very lightweight home-made directional antennas.  WiFi only radiates 100 mW, so, the input power is probably around 200 mW, roughly the same ...

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