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by ShiftPlusOne
Fri Jun 07, 2013 10:45 am
Forum: General discussion
Topic: Price hike???
Replies: 29
Views: 3869

Re: Price hike???

I have just checked the UK price and it's £28.07 + postage, which is over $USD 40 as well. So, what's up with that?

Edit: I know there are taxes as well, but taxes in Australia don't fully account for it either.
by ShiftPlusOne
Fri Jun 07, 2013 10:40 am
Forum: General discussion
Topic: Price hike???
Replies: 29
Views: 3869

Re: Price hike???

No price hike. In the UK, Farnell and RS should be selling at the equivilent of $35 + S&H. Any other distributors may well be putting on a markup, but RS and Farnell should be $35. In Australia, Element14 is selling for $41 +S&H, which comes to $56. When they originally went on sale, they didn't ch...
by ShiftPlusOne
Thu Jun 06, 2013 6:57 am
Forum: General programming discussion
Topic: Problem with rm on cron job?
Replies: 3
Views: 1072

Re: Problem with rm on cron job?

The problem is in the script. Pay close attention to the actual error message. It says there is a problem in ftpuplod.sh on line 8, near the [ character. That tells you there is a syntax problem. It has been a long while since I've done any bash scripting so the problem doesn't stand out to me, but ...
by ShiftPlusOne
Wed Jun 05, 2013 9:11 pm
Forum: General discussion
Topic: CLI only
Replies: 9
Views: 1213

Re: CLI only

please elaborate. you are already being impressive with that screen shot. you can be AWESOME if can teach us about it. It's done with screen and a vertical split patch for screen. I believe the same can be accomplished with tmux, but I know there are more options than that. However, that's not one ...
by ShiftPlusOne
Wed Jun 05, 2013 7:23 pm
Forum: General discussion
Topic: CLI only
Replies: 9
Views: 1213

Re: CLI only

OtherCrashOverride wrote:
5724 wrote:And also is there a way to have more then one instance of CLI on the screen at a time?
Ironically, using the X11 GUI you can have many CLI terminals on the screen at once.
Sure, but that's not the only way.
Image
by ShiftPlusOne
Sun May 26, 2013 10:07 pm
Forum: Beginners
Topic: Can a Pi do most of this?
Replies: 2
Views: 881

Re: Can a Pi do most of this?

It's hard to answer this question. Yes, it can do all of this and a lot more. Yes, it can run 24/7 without any problems.

How well it can do all of these things is another issue and that's a subjective call, so you'd have to figure it out for yourself.
by ShiftPlusOne
Sun May 26, 2013 9:30 pm
Forum: Beginners
Topic: Can QEMU boot from my RPi SD Card?
Replies: 12
Views: 19544

Re: Can QEMU boot from my RPi SD Card?

That's not what I meant, but that's alright, I was being too vague. QEMU has a lot of limitations, the windows adds on its own set of limitations, which make it difficult to accomplish what you're trying to do directly. I am not 100% sure, but I think in that case, sd means SATA disk, but even if it...
by ShiftPlusOne
Sun May 26, 2013 8:36 pm
Forum: Beginners
Topic: Can QEMU boot from my RPi SD Card?
Replies: 12
Views: 19544

Re: Can QEMU boot from my RPi SD Card?

Can you explain what you're trying to do with this and why?

Code: Select all

-drive if=sd,index=0,media=disk
Edit: Which part of that do you think tells qemu to use the sdcard or the sdcard image as the drive?
by ShiftPlusOne
Sun May 26, 2013 7:54 pm
Forum: Beginners
Topic: Can QEMU boot from my RPi SD Card?
Replies: 12
Views: 19544

Re: Can QEMU boot from my RPi SD Card?

You can read the sdcard into an image and boot that like you would boot plain 2012-08-08-wheezy-armel.img. Instead of using the 'write' button on win32diskimage, use 'read'. Then use the new image like you used the old one. I'll tell you what you're doing wrong though. The -hda parameter passes a di...
by ShiftPlusOne
Sun May 26, 2013 4:50 am
Forum: Troubleshooting
Topic: Is my Pi toast? (yes!)
Replies: 8
Views: 1205

Re: Is my Pi toast?

Ah, D17 is indeed broken off, but the pi should work without it, it just becomes a lot more sensitive to bad power supplies.
by ShiftPlusOne
Sun May 26, 2013 4:46 am
Forum: Troubleshooting
Topic: Is my Pi toast? (yes!)
Replies: 8
Views: 1205

Re: Is my Pi toast?

If there is any physical damage I am having a real hard time finding it in the pics and I have spent about 10 minutes staring at them like an idiot :? . The top reasons for this behaviour are usually bad contact between the card and the slot, bad power supply, bad sd card or bad sd reader/writer. Tr...
by ShiftPlusOne
Thu May 23, 2013 2:43 pm
Forum: Off topic discussion
Topic: Buying a cheap oscilloscope
Replies: 11
Views: 6930

Re: Buying a cheap oscilloscope

One downside of the RIgol though... a few of the knobs have cracked. I checked to see if that's common and found that it's a known problem.
by ShiftPlusOne
Fri May 17, 2013 2:20 pm
Forum: Bare metal, Assembly language
Topic: QEMU patches for RPi emulation - Initial release
Replies: 149
Views: 53363

Re: QEMU patches for RPi emulation - Initial release

Hi Torlus, ShiftPlusOne, Looks like I've found the compile issue. There were a couple of fixes for the Win32 build that went in just after torlus' last merge, on March 10th. Nothing more than a few ifdef __WIN32's Now builds just fine under MinGW, but I still get the black screen, and Qemu shows as...
by ShiftPlusOne
Thu May 16, 2013 8:10 pm
Forum: Off topic discussion
Topic: Buying a cheap oscilloscope
Replies: 11
Views: 6930

Re: Buying a cheap oscilloscope

Unfortunately I am not up to date with it anymore. I know when I got it they were starting to get shipped with patched firmware, and I was lucky to get one that was hackable. I don't know whether they managed to get around that patch or not, but to be honest I am not sure that it matters too much. I...
by ShiftPlusOne
Thu May 16, 2013 5:23 pm
Forum: Off topic discussion
Topic: How useful is pseudocode?
Replies: 18
Views: 4086

Re: How useful is pseudocode?

Is this about forcing students to write pseudocode or suggesting it? Both, I suppose :? As a student and someone who codes for fun, I would absolutely hate to be forbidden from diving into the real code or having to write pseudocode afterwards simply to meet some assessment criteria. That would qui...
by ShiftPlusOne
Thu May 16, 2013 1:19 pm
Forum: Off topic discussion
Topic: How useful is pseudocode?
Replies: 18
Views: 4086

Re: How useful is pseudocode?

Is this about forcing students to write pseudocode or suggesting it?
by ShiftPlusOne
Thu May 16, 2013 8:30 am
Forum: Beginners
Topic: No effect if 16M memory split set in the latest raspi-config
Replies: 6
Views: 1425

Re: No effect if 16M memory split set in the latest raspi-co

Someone on the IRC channel managed to fix this problem by removing the config.txt entries which raspi-config put in (namely the ones that manipulated which .elf file would be loaded).
by ShiftPlusOne
Wed May 15, 2013 11:18 am
Forum: General discussion
Topic: Sealed Case and Heat issues
Replies: 11
Views: 4284

Re: Sealed Case and Heat issues

Ok, was just making sure, since that statement wasn't 100% accurate. The BCM2835 system-on-a-chip should halt abruptly if its internal temperature exceeds the stated 85.0 degrees C upper limit But yes, it is quite likely that the hardware will turn itself off at some value over 85 degrees. However, ...
by ShiftPlusOne
Tue May 14, 2013 4:37 am
Forum: General discussion
Topic: Sealed Case and Heat issues
Replies: 11
Views: 4284

Re: Sealed Case and Heat issues

The BCM2835 system-on-a-chip should halt abruptly if its internal temperature exceeds the stated 85.0 degrees C upper limit, but running a script once a minute, or so, containing an "if ... then" clause with the above command sequence could execute an orderly shutdown of the system if the temperatu...
by ShiftPlusOne
Tue May 14, 2013 4:31 am
Forum: Off topic discussion
Topic: Buying a cheap oscilloscope
Replies: 11
Views: 6930

Re: Buying a cheap oscilloscope

I have the Rigol DS1052E. There is a hack to get it up to 100MHz, which pretty much makes it a DS1102E, which is a nice free upgrade. The only difference between the two units is in software, so there is no risk of damaging anything if you do it right. http://www.eevblog.com/forum/blog/changing-the-...
by ShiftPlusOne
Mon May 13, 2013 1:07 am
Forum: Advanced users
Topic: why expose dangerous pins?
Replies: 7
Views: 1851

Re: why expose dangerous pins?

They are not actually dangerous. From what I remember, they are just connected to the 5v, gnd and maybe 3.3v rails (you can check the schematic to find out). The reason they are labelled as "do not connect" is that they were not sure what these pins would be used for in later revisions, so they were...
by ShiftPlusOne
Sun May 12, 2013 1:44 pm
Forum: General discussion
Topic: Heat Sink - Why
Replies: 7
Views: 1444

Re: Heat Sink - Why

Everything you need for overclocking should be here http://elinux.org/RPiconfig and here http://wiki.debian.org/HowTo/CpuFrequencyScaling My own experience is that very little heat is produced notwithstanding overclocking but out of 16 reviews 15 were 5 star at https://www.modmypi.com/raspberry-pi-h...
by ShiftPlusOne
Sun May 12, 2013 10:00 am
Forum: General discussion
Topic: Heat Sink - Why
Replies: 7
Views: 1444

Re: Heat Sink - Why

1) /opt/vc/bin/vcgencmd measure_temp
2) Not sure what you're asking there, sorry.
3) A heat sink is never advisable. The topic has been done 1000 times on the forum, but in short, the pi doesn't need them and if it did, they wouldn't lower cpu/gpu temperature enough to matter.

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