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by scruss
Fri Oct 26, 2012 12:01 pm
Forum: Troubleshooting
Topic: (512MB) Raspberry Pi eats SD cards!
Replies: 14
Views: 10719

Re: 512MB Raspberry Pi eats SD cards!

Maybe I spoke too soon. This is what I got when trying to install some packages via apt-get: [36218.109865] mmc0: final write to SD card still running [36228.126345] mmc0: Timeout waiting for hardware interrupt - cmd12. [36228.127534] mmcblk0: error -110 sending stop command, original cmd response 0...
by scruss
Fri Oct 26, 2012 12:07 am
Forum: Troubleshooting
Topic: (512MB) Raspberry Pi eats SD cards!
Replies: 14
Views: 10719

Re: 512MB Raspberry Pi eats SD cards!

Ah, as you were. Seems I downloaded a not quite complete firmware. Using rpi-update got me a working 512MB system.
by scruss
Thu Oct 25, 2012 3:01 am
Forum: Troubleshooting
Topic: (512MB) Raspberry Pi eats SD cards!
Replies: 14
Views: 10719

(512MB) Raspberry Pi eats SD cards!

I got a 512MB board, and put the 2012-09-18 Wheezy image on a known good 32 GB SD card. I copied the 512MB firmware (of 2012-10-21) into /boot, then started up the Raspberry Pi. After completing configuration, I rebooted and resized the root partition. Within a couple of minutes, the console was fil...
by scruss
Sat Oct 20, 2012 2:39 pm
Forum: Networking and servers
Topic: an APRS iGate implementation using the Raspberry-Pi
Replies: 4
Views: 4306

Re: an APRS iGate implementation using the Raspberry-Pi

Very nice. Now I might have a use for the effectively unprogrammable Icom V80 that I won to fill in the patchy APRS gating in my neighbourhood ...

Stewart / VA3PID
by scruss
Mon Oct 08, 2012 1:00 pm
Forum: Automation, sensing and robotics
Topic: Arduino Sensor Arrays - Serial Communication Method?
Replies: 7
Views: 3474

Re: Arduino Sensor Arrays - Serial Communication Method?

webbmoncure wrote:what protocol is best for my end use?
Have you looked at Firmata? It doesn't allow for much processing on the Arduino, but has some nice (if somewhat sparsely documented) support code for Processing and Python.
by scruss
Fri Oct 05, 2012 3:27 pm
Forum: Raspberry Pi OS
Topic: Screenshot?
Replies: 19
Views: 18324

Re: Screenshot?

I use the distressingly-named utility 'scrot'. To get a shot of the active window, I use: sleep 5; scrot -bu The five second delay gives you a chance to get the window in order. It has options to take the whole screen (root window in X jargon). If you're using a remote X session through ssh, use wha...
by scruss
Thu Oct 04, 2012 3:01 am
Forum: Off topic discussion
Topic: Anyone else still got a Dragon?
Replies: 34
Views: 10108

Re: Anyone else still got a Dragon?

xtramural wrote:As it happens I have the very first Dragon ...
You are Duncan Smeed, and I claim my five pounds!

I didn't study CompSci at Strathclyde, but most of my mates did (graduates of 1990) and spent most of my time lurking in the various common rooms ...
by scruss
Wed Oct 03, 2012 11:38 am
Forum: General programming discussion
Topic: Input on Programming Languages
Replies: 19
Views: 5005

Re: Input on Programming Languages

incidentals wrote:It would be interesting to hear what you cannot do with vb.
Write a program that runs on the Raspberry Pi?
/ducks
by scruss
Mon Oct 01, 2012 11:10 am
Forum: Troubleshooting
Topic: Processing IDE capture video help
Replies: 1
Views: 924

Re: Processing IDE capture video help

Processing only sorta-kinda runs with the standard Raspbian JVM. I haven't used it for anything much since that article. Maybe the new Sun JVM (can't bring myself to call them Oracle, dammit) will be better when it comes out.
by scruss
Sun Sep 30, 2012 4:51 pm
Forum: General discussion
Topic: Add just two pins for power off
Replies: 3
Views: 1198

Re: Add just two pins for power off

Strawberry_Monty wrote:.
Why - wonder how many pull-out / push-in the micro usb can withstand 500 ? maybe 700.....or more...
USB Micro-B connectors are rated at 10,000 insertions — see the “Universal Serial Bus 3.0 Connectors and Cable Assemblies Compliance Document”, Table 3.1, under Durability.
by scruss
Fri Sep 28, 2012 5:50 pm
Forum: Graphics, sound and multimedia
Topic: Pinta for raspberry??
Replies: 9
Views: 4335

Re: Pinta for raspberry??

I've run Gimp on the Raspberry Pi. It's a little painful, but not completely unusable. The overhead of Mono would be pretty bad.
by scruss
Wed Sep 26, 2012 12:00 pm
Forum: General discussion
Topic: Raspberry Pi - best trojan horse ever?
Replies: 8
Views: 3022

Re: Raspberry Pi - best trojan horse ever?

I read that linked article, and found it one of the more pointless concern trolls. There has been very little “open hardware” over the years, and that has not stopped generations of computer scientists from learning their craft. The Raspberry Pi was designed as a cheap computer for kids to learn on....
by scruss
Sat Sep 22, 2012 3:07 am
Forum: Media centres
Topic: ATI remote wonder plus
Replies: 1
Views: 2120

Re: ATI remote wonder plus

Yes, it works as a (limited) USB HID keyboard. The one I have — USB ID 0bc7:0004 — appears as a joystick-like 2 button mouse and a 0-9 keypad without drivers on console and X.

(and yes, I put it in the RPi VerifiedPeripherals - eLinux.org wiki.)
by scruss
Fri Sep 21, 2012 12:04 pm
Forum: General programming discussion
Topic: resources for learn FORTRAN?
Replies: 7
Views: 2180

Re: resources for learn FORTRAN?

Clive Page's Fortran Resources is a useful start. I learned Fortran 77 from his book Professional Programmer's Guide to Fortran77, which is also on the site.
by scruss
Fri Sep 07, 2012 3:27 am
Forum: Other programming languages
Topic: Young Persons Guide to BCPL Programming on the Raspberry Pi
Replies: 3
Views: 2813

Re: Young Persons Guide to BCPL Programming on the Raspberry

Yes, this is rather good. I just found this article this evening after digging out an old game I wrote in BCPL for the Amstrad CPC. It was an interesting language, even if (for the AMSDOS version) you had to jump through hoops to compile separate code segments.
by scruss
Tue Sep 04, 2012 2:38 pm
Forum: General discussion
Topic: New version of the Pi? (got one)
Replies: 26
Views: 5046

Re: New version of the Pi? (got one)

Pete would like me to say that we are not *calling* them mounting points, because he has horrible images of people screwing stuff into them tightly and compressing the PCB until it breaks. One of the rather high-end network video players beloved of AV types has just such a hole, and it extends thro...
by scruss
Mon Sep 03, 2012 5:11 pm
Forum: General discussion
Topic: Real outputs for Pi
Replies: 13
Views: 2444

Re: Real outputs for Pi

KenshinPT wrote:However I would try a goal of 50usd (including the Pi and the external card).
So, wait, you'd want this card for $15? Raspberry Pis are $35 + tax here.
by scruss
Fri Aug 31, 2012 5:17 pm
Forum: General discussion
Topic: Check out this guy's pitching skills!
Replies: 43
Views: 12491

Re: Check out this guy's pitching skills!

These kids today — I dunno. When I was a lad, you had to make up a computer company name (in my case, Edible Computers ) and hope that the company you were trying to scam freebies from didn't notice that the evaluation request was printed as fake letterhead on a 9-pin Amstrad DMP-2000. It was bad wh...
by scruss
Fri Aug 31, 2012 2:17 am
Forum: General programming discussion
Topic: Input on Programming Languages
Replies: 19
Views: 5005

Re: Input on Programming Languages

Python is the new BASIC, Gordon. It has a direct mode, just like BASIC. You don't have to futz with objects unless you really need to. And the whole indentation thing is handled nicely by any language-aware editor.
by scruss
Tue Aug 28, 2012 8:19 pm
Forum: General programming discussion
Topic: Structuring Programs
Replies: 25
Views: 6751

Re: Structuring Programs

Have you looked at The Python Tutorial? It explains all of the concepts you're asking. It starts from simple commands in direct mode, so you can see what's happening immediately.
by scruss
Mon Aug 27, 2012 12:23 pm
Forum: Beginners
Topic: Help with SSH and VNC please
Replies: 1
Views: 975

Re: Help with SSH and VNC please

ssh expects a user name, unless you've set it in your .ssh/config. Try ssh user@192.168.0.101 , where user is the one you want on the Raspberry Pi (pi, maybe?). For a Mac VNC client, I use Chicken . If you're on the same network and it's reasonably fast, you don't need VNC; you can use X forwarding....
by scruss
Sun Aug 26, 2012 2:52 pm
Forum: Python
Topic: Python under the hood book?
Replies: 3
Views: 1166

Re: Python under the hood book?

Mark Lutz's Programming Python has most of this, but:
  • it's expensive
  • it's huge and wordy
  • it's an O'Reilly book that has all the examples written for Windows, and you need to modify them for Unix. How wrong is that?
by scruss
Wed Aug 15, 2012 3:42 am
Forum: Other projects
Topic: RPI and Arduino Uno serial
Replies: 6
Views: 3320

Re: RPI and Arduino Uno serial

What's the code running on the Arduino?

I've managed to get the Raspberry Pi to talk to an Arduino using pyFirmata: Raspberry Pi, Python & Arduino.
by scruss
Tue Aug 14, 2012 11:42 am
Forum: Advanced users
Topic: Most efficient filesystem for huge file trees
Replies: 25
Views: 5466

Re: Most efficient filesystem for huge file trees

It doesn't need it. The file will be sparse , so you can create it as half a terabyte or more and it will only occupy the space that it needs to hold the data. That's pretty much how we did it for the Collins COBUILD corpus in the late 1990s. About a billion words, and all running on a Sun Ultra-1,...
by scruss
Mon Aug 13, 2012 3:39 am
Forum: Beginners
Topic: Com port through USB
Replies: 12
Views: 7085

Re: Com port through USB

You'll probably find that the USB serial driver is supported. I've had success with FTDI and Silicon Labs, but haven't tried a Prolific-based adapter with the Raspberry Pi. Here's my experience: peripherals - How to attach an Arduino? (not just about Arduinos).

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