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Computer viking
May 30, 2011
Now with less breakage.

~Coxy posted:

They're vapour until you can actually buy one, which will be when the second batch is ready to sell.
I'm sorry to be blunt because I really really want one (two) but I'm not holding my breath for them.

That's not vapourware, though. It might be really-hard-to-find-ware or at worst abandoned-in-a-warehouse-ware, but "vapour" sort of implies the only physical aspect of it are the words out of someone's mouth.

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Computer viking
May 30, 2011
Now with less breakage.

Install Gentoo posted:

And if you have all that already, you probably also have a computer they can use already.

Especially in an education environment, although I don't know maybe your school just bought HDTVs for every student instead of computers.

Monitors alone are dirt cheap these days, so there's some savings to be realized there. Could be useful.

Computer viking
May 30, 2011
Now with less breakage.

evol262 posted:

You're mistaken in thinking that X is morbidly obese. FFS, it's essentially the same program that ran on PA-RISC systems with 8MB of memory. It's fine. QT and GTK may be hogs (QT's better than GTK in that regard, at least), yeah. dbus? Sure. X? No.

Ha, yes - X is many things, but it does have a long history of running on things we'd consider laughably weak today. (Fluxbox was usable on my 486.)

That said: Do test Qt embedded, just to see. I'm sure they've put a lot of work into it to make it run ok on all sorts of junk, so... could be interesting.
(It should be fairly easy to move from Qt embedded to Qt/X, anyway.)

Computer viking
May 30, 2011
Now with less breakage.

duck monster posted:

I'd be nice-ing the crap out of the post process stage if you plan on watching videos simultaneously. The unpack can even make my late 2011 MBP chug if Im not careful.

Another potential issue is io - even if the cpu usage is low-priority, it might still keep the io subsystem busy. (Has Linux got some form of priority-based disk scheduling? I've only really looked at FreeBSD lately.)

Computer viking
May 30, 2011
Now with less breakage.

Install Windows posted:

Yeah for the kind of schools that can't afford to have a computer lab, teaching linux programming on an outdated cell phone chipset isn't going to be helpful.

How does the OS or hardware matter when teaching a basic introduction to programming course? The only important parts is that the OS+hardware won't create too many problems and that the chosen language isn't entirely braindead. The bigger issue is finding interested and competent teachers, I suspect.

(Keep in mind that this is a first look at programming, not a trade skills course.)

Computer viking
May 30, 2011
Now with less breakage.

Paul MaudDib posted:

I've been playing around with OpenElec and holy hell is it ever pissing me off. There is NO EXCUSE for renaming "shutdown -h now" and "shutdown -r now" to "poweroff" and "reboot".

Also, no package manager because updates make your distribution insecure

Mind you, on e.g. FreeBSD, "shutdown -r" and "reboot" don't do exactly the same thing. The former takes a time (which can be "now"), warns all users, disables logins, and adds a log entry, while the latter just goes ahead and SIGTERMs everything, syncs disks, and reboots. Also note that "poweroff" is an alias for "shutdown -p now", while "halt" is the no-warnings/no-waiting version.

If they're renamed things so "reboot" is the one with warnings and delays, that's ... really rather confusing.

Install Windows posted:

Because a school that can't afford normal computers for use in everything else a school needs computers for probably shouldn't have RPis for a programming class.


That is a fair point, yes.

Computer viking fucked around with this message at 09:35 on Aug 31, 2013

Computer viking
May 30, 2011
Now with less breakage.

Actually, windows services for unix (or whatever they're called today) has a perfectly reasonable NFS client. However, MS have, in their infinite wisdom, decided to only make it available on Ultimate and Enterprise .

Not helpful for booting a Pi - but if you want to have all your data on NFS, it should work fine (given the right windows version).

Computer viking
May 30, 2011
Now with less breakage.

The easiest way to dualboot it is probably to make one SD card per OS.

Computer viking
May 30, 2011
Now with less breakage.

What's the "correct" way send a high-signal to the arduino with minimal components, anyway? A transistor and 5V from somewhere?

Computer viking
May 30, 2011
Now with less breakage.

As a way to step up the voltage if your signal is a bit too low to trigger the 5V logic, but you have 5V at hand - or is that an inappropriate/silly way to do it?
(I do, obviously, have very little idea what I'm talking about.)

Computer viking fucked around with this message at 12:34 on Jul 29, 2014

Computer viking
May 30, 2011
Now with less breakage.

SEKCobra posted:

Well all I'm saying is, that the minimum component way, would be to use 5V on the switching circuit if you can.

Ha, yes - I guess "a wire" is about as minimal as you'll get.
(In the case of the Pi I guess you're stuck at 3.3V, though.)

Computer viking
May 30, 2011
Now with less breakage.

Ok, that's rather neat.

Computer viking
May 30, 2011
Now with less breakage.

nmfree posted:

OK, that is pretty neat.

Of course the only real-world application that will probably see is buttcoins sooooo

At this point, even a fairly expensive PCIe GPU won't earn you much on bitcoins; I can't imagine a RPi would pay for the SD card you booted from even if you left it for a few years.

Computer viking
May 30, 2011
Now with less breakage.

It looks like a bunch of the things in the Wikipedia list of single-board computers[1] have SATA. If any of those have more than one port (or proper support for SATA port switching) and Gbit networking , you could probably build something?

[1] https://en.m.wikipedia.org/wiki/Com...board_computers


Practically speaking, a mini-itx PC would be faster, easier, and can be had with way more SATA connectors ... but they are also larger, more expensive, and use more power. Besides, where's the challenge in that.

Comedy option: buy an old large thinkpad with a dead screen. Stuff two large 2.5" drives in it and you have a decent quiet NAS with built-in UPS.

Computer viking fucked around with this message at 18:45 on Mar 2, 2016

Computer viking
May 30, 2011
Now with less breakage.

Our department file server is a 7 year old dell workstation with 4 drives on the internal controller and two external 4-drive boxes hanging off a cheap Marvell eSATA card. 16 GB RAM, WD red drives, ZFS, FreeBSD. More than enough for wire speed reads, and it was enough for writes as well until it filled to 95%.

(I'm finally prepping a new proper replacement for it, yes. Something about 25TB of research data on hardware that was a bit iffy several years ago mildly worries me.)

Computer viking fucked around with this message at 21:32 on Mar 2, 2016

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Computer viking
May 30, 2011
Now with less breakage.

evil_bunnY posted:

Just. Don't.

Oh trust me, I know.

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