Raspberry Pi vs Parallax C3

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  • Jim FouchJim Fouch Posts: 380
    edited May 2012 Vote Up0Vote Down
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    Just got it a few minutes ago. I thought it was going to come with an SD card, but I guess not. Not a big deal. I have a ton of them laying around. Now I'll have to go find the files to see what it does when it boots up.
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  • Jim FouchJim Fouch Posts: 380
    edited May 2012 Vote Up0Vote Down
    Well, I did take a few minutes and set up an SD card, found a keyboard and mouse. It boots up into Linux. Took a bit of reading the forums on raspberrypi.org. I'm NOT a Linux guy at all.

    Was able to get the GUI started and it seems to work. I do notice that my TV does not really like the signal. It seems mostly stable, but the screen flickers every 10-15 seconds and sometimes the TV says the signal is out of spec. I'm using a newer TV with HDMI inputs and the TV is 1080P.

    I think for the $40 I have invested, it's worth it. Will be a while before I get a chance to push it much and see what programming I can do.
  • Bob Lawrence (VE1RLL)Bob Lawrence (VE1RLL) Posts: 1,244
    edited May 2012 Vote Up0Vote Down
    JIm,

    With some editing to the text file it should lock in the video.

    http://elinux.org/RPi_config.txt



    Bob
  • Loopy BytelooseLoopy Byteloose Posts: 11,831
    edited May 2012 Vote Up0Vote Down
    Well welcome to Linux.
    You may find that reading some of the original Unix documentation will be far more helpful with low level stuff than trying to Google for modern answers.

    Unix/Linux is is very much about two separate streams of data - character (traditionally 8-bit or multiples thereof) and blocks (originally 512 bytes per).

    These days, most of the systems utilities have been combined into an application called Busybox. The utilities are quite important for building small applications and interfaces. Also, learning the shell programs - usually called BASH is very helpful.

    The feature that seems to be the most unusual for the Raspberry Pi is the the whole video generation side of the unit. Learning Linux's XWindows does demand a real commitment to understanding Linux as a whole.

    http://www.busybox.net/

    http://www.gnu.org/software/bash/


    I suspect that with a little investigation and research, Parallax's C3 will begin to look much easier.
    Hwang Xian Shen, Puddleby-on-the-Marsh.
    All things considered, I can live and thrive without Microsoft products. LINUX is just fine.
  • prof_brainoprof_braino Posts: 4,197
    edited May 2012 Vote Up0Vote Down
    With some editing to the text file it should lock in the video.
    http://elinux.org/RPi_config.txt

    Can I ask if you ended up editing this file, what the original values were, and whet you changed them to.

    I guess that you want to end up with something like

    hdmi_group=1 (CEA)

    and

    hdmi_mode=16 1080p 60Hz
  • Loopy BytelooseLoopy Byteloose Posts: 11,831
    edited June 2012 Vote Up0Vote Down
    Linux has quite a bit that is configured in text files. Some text files are clearly noted as NOT intended for editing. Others may not be as clear. The usual approach is to make a backup before you try to modify. Some of the traditional Unix/Linux text editors do this for you.

    Regarding where to get good answers, try here ===> http://www.tldp.org/guides.html


    Hwang Xian Shen, Puddleby-on-the-Marsh.
    All things considered, I can live and thrive without Microsoft products. LINUX is just fine.
  • ColeyColey Posts: 905
    edited June 2012 Vote Up0Vote Down
    ...still waiting.. neither Prop2 or Pi have arrived on my doorstep yet. It's still up for grabs. :)

    OBC

    I've had an email with my tracking number from RS today so my Pi is on it's way, any sign of your Prop2 yet OBC? :thumb:

    Regards,

    Coley

    PS Baggers has got his already !!
  • User NameUser Name Posts: 1,181
    edited June 2012 Vote Up0Vote Down
    After a wait of a few months, I was invited a week ago to place my order for a RasPi. I thought about it and thought about it. I looked at all the many boards already collecting dust at Casa de Chaos. I thought about what I'd do that very day if a RasPi magically appeared in the mail.

    At long last I made my decision: I ordered a new climbing harness from Black Diamond.
  • mindrobotsmindrobots Posts: 5,790
    edited June 2012 Vote Up0Vote Down
    Enjoy your climb!!

    It would be interesting to know how many potential RasPi purchasers follow through......with a new whatever, instead of the RasPi.

    I'm on the list....wonder what I'll decide?
    MOV OUTA, PEACE <div>Rick </div><div>"I've stopped using programming languages with Garbage Collection, they keep deleting my source code!!"</div>
  • davejamesdavejames Posts: 3,850
    edited June 2012 Vote Up0Vote Down
    Well-written documentation requires no explanation.
  • CameronMCameronM Posts: 57
    edited June 2012 Vote Up0Vote Down
    Adafruit has one too that looks pretty cool. I guess the only thing about it is you can't stack anything on top, however there is a slot that allows for a ribbon cable to access the gpio.

    http://www.adafruit.com/products/859

    -Cameronm
  • Loopy BytelooseLoopy Byteloose Posts: 11,831
    edited June 2012 Vote Up0Vote Down
    That Adafruit enclosure makes the Raspberry Pi complete. One can create a very nice desktop computer by attaching the box to the backside of a monitor. I just may have to get a Raspberry Pi after all.

    But here we go again with the "Notify me when in stock".
    Hwang Xian Shen, Puddleby-on-the-Marsh.
    All things considered, I can live and thrive without Microsoft products. LINUX is just fine.
  • Heater.Heater. Posts: 14,858
    edited June 2012 Vote Up0Vote Down
    Loopy,
    One can create a very nice desktop computer by attaching the box to the backside of a monitor

    ...or TV. Yep, now you have got the idea.

    Note that the Raspi organization is planning to have an enclosure of it's own before this gets anywhere near class rooms or youngsters bedrooms. They want it to be transparent so kids can see "the works" which seems like a great idea.

    But here we go again with the "Notify me when in stock"

    tick, tock....tick, tock. Yes this is getting to be a drag.
  • Jim FouchJim Fouch Posts: 380
    edited June 2012 Vote Up0Vote Down
    Here is my attempt at at protecting it from being shorted by a stray wire on your work bench,..

    http://www.ebay.com/itm/120924854772?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
  • Loopy BytelooseLoopy Byteloose Posts: 11,831
    edited June 2012 Vote Up0Vote Down
    Has anybody noticed that a recent expansion board for the Parallax C3 has become available. It stacks and adds significant video memory for animation and gaming.

    http://forums.parallax.com/showthread.php?140402-PROP-C3-Add-on-expansion-board-C3-Synapse-is-coming-soon!&highlight=Lamothe

    I covered sensitive places on the back side of my Hydra with hot glue (others were offended) as bare boards one a cluttered desk do have a high risk of unplanned shorts.

    Idon't see much reason to protect the top side, unless one fears the curious will tamper. Still, a complete enclosure makes me feel that I have a complete project to present to others.
    Hwang Xian Shen, Puddleby-on-the-Marsh.
    All things considered, I can live and thrive without Microsoft products. LINUX is just fine.
  • ColeyColey Posts: 905
    edited June 2012 Vote Up0Vote Down
    ...still waiting.. neither Prop2 or Pi have arrived on my doorstep yet. It's still up for grabs. :)

    OBC

    It can't be long before you get yours now Jeff.... :tongue:

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