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by dolson14
Sat Jun 01, 2013 7:53 pm
Forum: Python
Topic: Python or Python 3?
Replies: 9
Views: 2671

Re: Python or Python 3?

Because I don't want to run two programs in parallel and I can't run two programs in parallel as they're using GPIO. I meant parallel in the sense that both versions can be installed on the same system, not that you run them both at the same time. Install both branches, use Python 3 when you can, P...
by dolson14
Sat Jun 01, 2013 3:31 pm
Forum: Python
Topic: Wanna know about python coding
Replies: 6
Views: 1167

Re: Wanna know about python coding

This is the book I first learned Python from:
http://www.greenteapress.com/thinkpytho ... ython.html

You can purchase a hard copy, or download the PDF at no cost from that link.
by dolson14
Sat Jun 01, 2013 3:24 pm
Forum: Python
Topic: Python or Python 3?
Replies: 9
Views: 2671

Re: Python or Python 3?

Why not both? You should be able to have them running in parallel. Python 3 is the direction the language is moving, so I try to do everything I can there. If I'm working on something that requires Python 2, I can bump down. But even then, I try to use Python 3 habits as much as possible (using pare...
by dolson14
Wed Feb 13, 2013 1:27 am
Forum: Troubleshooting
Topic: GPIO - UART - Getting Weird Serial Output... Stumped...
Replies: 6
Views: 4818

Re: GPIO - UART - Getting Weird Serial Output... Stumped...

I've been trying to figure out the UART as well; encountered a problem as detailed in this thread: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=33118 Using stty -F /dev/ttyAMA0, I get that my installation is at 38400 baud. I was expecting 115200 as well, as all the tutorials seem to say th...
by dolson14
Tue Feb 12, 2013 1:13 am
Forum: Troubleshooting
Topic: Did I break my Pi? Network problem
Replies: 9
Views: 1392

Re: Did I break my Pi? Network problem

Ok, I think the answer to my original question is no, I didn't brick my board. Trying everything again today, using a different (shorter) cable, the board booted up just fine; no problems at all. I may have done something that tripped the polyfuse, making it more sensitive to the longer power cable....
by dolson14
Tue Feb 12, 2013 12:47 am
Forum: Troubleshooting
Topic: Did I break my Pi? Network problem
Replies: 9
Views: 1392

Re: Did I break my Pi? Network problem

Ah, I should have caught that. I have checked the power supply; rated at 2 A, and it puts out a solid 5.2 V. Could the polyfuse really be the problem? Since the 2nd board has such a low voltage too, perhaps my messing with the UART didn't cause the problem entirely? Is there any way to check and see...
by dolson14
Mon Feb 11, 2013 5:02 pm
Forum: Troubleshooting
Topic: Did I break my Pi? Network problem
Replies: 9
Views: 1392

Re: Did I break my Pi? Network problem

Interesting.. both of these are early models; the one that is giving me trouble was one of the earliest. I wonder if the polyfuse has always been a problem on these two boards, and that the UART connecting was just the last straw for the one? If I understand right, just replacing the polyfuse isn't ...
by dolson14
Sun Feb 10, 2013 6:04 pm
Forum: Troubleshooting
Topic: Did I break my Pi? Network problem
Replies: 9
Views: 1392

Re: Did I break my Pi? Network problem

I did a quick check of the TP1-TP2 voltage of my other Pi that I've not really used yet; it is definitely higher, but not >4.85 V. I measure just 4.6V on this one. Its network comes up just fine, though.. I'm honestly not certain how to interpret all this. Any suggestions/comments would be welcome!
by dolson14
Sun Feb 10, 2013 5:58 pm
Forum: Troubleshooting
Topic: Did I break my Pi? Network problem
Replies: 9
Views: 1392

Re: Did I break my Pi? Network problem

Yes, I am aware. My background is with the MSP430, so all of the tools I use are already 3v3. The ftdi device I have is one I made myself, and can vouch that it is only using 3v3. I did measure the TP1-TP2 voltage: about 4 V, even a little under. Is it safe to assume this means I've blown the protec...
by dolson14
Sun Feb 10, 2013 4:50 am
Forum: Troubleshooting
Topic: Did I break my Pi? Network problem
Replies: 9
Views: 1392

Did I break my Pi? Network problem

I've been playing with the UART on my Pi for the first time. My first thought was to listen in on the tty stream before detaching /dev/ttyAMA0. I'm using an FT232RL, and attached it to the Pi. (Made sure I tied Tx->Rx and Rx->Tx, of course.) I connected to the stream at 115200 8N1, and immediately s...
by dolson14
Sun Feb 10, 2013 2:07 am
Forum: Beginners
Topic: UART from GPIO connection
Replies: 2
Views: 1429

Re: UART from GPIO connection

systemctl disable [email protected] systemctl stop [email protected] In this case, I think you actually want to stop [email protected]? I'm in the middle of figuring out for the first time how to use the GPIO on my Pi. Shame I haven't done it before.. =( Anyway, my understanding is that tty1 is the terminal that sen...
by dolson14
Wed May 16, 2012 2:20 pm
Forum: Troubleshooting
Topic: A word of warning on using cheap Micro USB cables.
Replies: 23
Views: 8217

Re: A word of warning on using cheap Micro USB cables.

I've been having good luck with this power supply, for what it's worth:

http://www.microcenter.com/single_produ ... id=0375186
by dolson14
Tue May 15, 2012 4:34 pm
Forum: Troubleshooting
Topic: Anybody managed to get a web browser working on Arch?
Replies: 10
Views: 4827

Re: Anybody managed to get a web browser working on Arch?

If you're not finding software in the pacman repositories, you might try the AUR. sudo pacman -S yaourt yaourt -S google-chrome or whatever other software you want to try out. There's no guarantee that anything in AUR will work on the Pi, but at least you can try it out. If it installs but doesn't w...
by dolson14
Mon May 14, 2012 2:32 pm
Forum: Beginners
Topic: Only 122Mb ram?
Replies: 11
Views: 7819

Re: Only 122Mb ram?

Interesting; I'd not seen that before. I love learning new things. :lol:

Does this mean my explanation is wrong, and that the equivalent to 128 MiB in MB being the looked-for 122 MB is just by unfortunate coincidence?
by dolson14
Sun May 13, 2012 6:06 pm
Forum: Beginners
Topic: [Ach linux] Arduino drivers
Replies: 5
Views: 5718

Re: [Ach linux] Arduino drivers

Depends on how you want to use it. The GPIO pins let you do serial communication directly via UART, or by SPI, I2C, etc. Without the FTDI driver, you won't be able to work with the FTDI chip on the arduino; in other words, you won't be able to open the USB port as a virtual comm port. There may be a...
by dolson14
Sun May 13, 2012 6:02 pm
Forum: Beginners
Topic: Only 122Mb ram?
Replies: 11
Views: 7819

Re: Only 122Mb ram?

I can; it's the difference between MB and MiB. The Raspberry Pi has 256 MB, or 256e6 bytes of RAM. 128e6 of these are allocated to the CPU-- when you check the memory level, it's reporting in MiB, and 128e6/1024 = 125e3 kiB 125e3/1024 = 122.07 MiB Took me a while to figure out what was going on here...
by dolson14
Sun May 13, 2012 5:56 pm
Forum: Beginners
Topic: [Ach linux] Arduino drivers
Replies: 5
Views: 5718

Re: [Ach linux] Arduino drivers

According to FTDI's Driver Page , the linux drivers are only available for x86 and x64 achitectures; they're not available for ARM (yet). The good news is that ARM drivers are available for the Windows CE operating system, so when some bright mind tackles it, I don't think it will be too difficult t...
by dolson14
Sat May 12, 2012 7:47 pm
Forum: Beginners
Topic: SSH Guide For Complete noob?
Replies: 71
Views: 114539

Re: SSH Guide For Complete noob?

<t>prodata said: <br/> <br/> <br/> Is Putty the only such compatible ssh client to consider (I"m sure there might be others, but to rephrase: is Putty the accepted standard tool, or does it have competition?)<br/> <br/> Is there any such tool that might also have FTP built-in (ie so that a file coul...
by dolson14
Sat May 12, 2012 7:15 pm
Forum: Beginners
Topic: Installation Guide for Arch Linux on the Raspberry Pi
Replies: 2
Views: 3112

Re: Installation Guide for Arch Linux on the Raspberry Pi

<t>I've started a wiki page to help new users who want to use Arch Linux on the Raspberry Pi get up and running.  You can find it here.<br/> <br/> This isn't an end-all guide, just enough to cover some of the basics that deal with the unique aspects of Arch compared to the other distros.  It's not d...
by dolson14
Sat May 12, 2012 3:03 am
Forum: Troubleshooting
Topic: Double Check RAM Quantity
Replies: 3
Views: 2203

Re: Double Check RAM Quantity

Got it; thanks.
by dolson14
Sat May 12, 2012 1:36 am
Forum: Troubleshooting
Topic: Double Check RAM Quantity
Replies: 3
Views: 2203

Re: Double Check RAM Quantity

<t>I just receive my Raspberry Pi today! All has gone very well; I was able to install Arch on my SD card (Kingston SDHC 8GB), expand the partition etc., and boot everything up. (In Arch, I did need to remove /boot/config.txt to get the HDMI to display to my DVI monitor.)<br/> <br/> I installed xorg...

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