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Raspberry Pi Model A Makes First Appearance

An anonymous reader writes "It's easy to forget that the Raspberry Pi currently shipping is the more expensive model of the board. It is actually called the Model B as it sports more features than the $25 Model A. The main differences [compared to the B model] include a lack of an Ethernet port and the associated networking chip, as well as the presence of only one USB port instead of two. There was originally going to be less memory on the Model A (128MB instead of 256MB), but the Raspberry Pi Foundation managed to make enough cost savings during a redesign to increase the amount to 256MB on the cheaper version. With all the focus being on the Model B, we haven't actually seen the (near) final Model A board yet. But that changes today, as Eben Upton has just shown off the $25 board."

30 of 101 comments (clear)

  1. Interesting. by queazocotal · · Score: 3, Interesting

    So - no CSI/DSI - for which there are no drivers anyway.
    No ethernet port.
    I do wonder what that white blob in place of the ethernet/USB hub chip is.
    Is it simply a bit of tape, to cover some wires linking the USB directly to the SoC, or something else.

    As to why this is an interesting bit of hardware - it's not.
    It's interesting because it's a relatively open platform, at a reasonable price point.

    Devices I want a model A for.
    Wifi weather-station controller.
    Heating controller.
    Door camera system.

    1. Re:Interesting. by macemoneta · · Score: 4, Informative

      My main issue with the device is that they crippled the openess to include something that no one in this target group actually wants - 1080p video.

      Unless you want to run XBMC, and turn a dumb TV into a smartTV for $25.

      --

      Can You Say Linux? I Knew That You Could.

    2. Re:Interesting. by sirsnork · · Score: 4, Informative

      The schematics show that when the ethernet chip (also a USB hub) is missing there are two SMD resistors that connect the actual port up to the single USB pins on the main SOC. When the chip is present those resistors are left off and that port goes into the ethernet chip to give both ethernet connectivity and two additional USB ports.

      No idea what the white blob is, but it's not something required to make the USB port work.

      No idea why the CSI connector isn't attached, seemingly there is nothing stopping it working if the header is attached as it's completely supplied by the main SOC

      --

      Normal people worry me!
    3. Re:Interesting. by kiddygrinder · · Score: 2

      i bought it because it has 1080p video

      --
      This is a joke. I am joking. Joke joke joke.
    4. Re:Interesting. by drinkypoo · · Score: 2

      So, I need a $250 game console (or $200 PC) turned on and running a server to transcode files to something the $25 Pi can play? That doesn't make sense, economic or otherwise.

      It does if you already own the PC, and it's up and running in another room anyway for one reason or another, and you already own the TV, and the TV doesn't have its own media player which could connect to a DLNA server or similar, and you don't have a HTPC connected to your TV, or you think you can save enough money by not running your HTPC that it's worth it to buy one of these devices. That in fact applies to a staggeringly large number of households. A much smaller number of them, of course, are going to do this, not least because at this point it takes some knowledge. That doesn't change the potential utility.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    5. Re:Interesting. by klaws · · Score: 2

      That "white spot" is the ground plane + heat sink for the ethernet/usb hub IC.

      --
      - KLS
  2. Re:POS by macemoneta · · Score: 4, Informative

    This "crippled piece of shit" can, among thousands of other things, run XBMC and output 1080p video, turning and dumb TV into a smartTV. Not too shabby for $25.

    --

    Can You Say Linux? I Knew That You Could.

  3. Highest bang-per-buck ratio of any SoC by muon-catalyzed · · Score: 4, Interesting

    How does that Broadcom SoC compare to the current Shenzen's SoC king the disruptive $7 Allwinner-A10 SoC?

    Bonus: comes with open source GPU driver, unlike RasPi.

    1. Re:Highest bang-per-buck ratio of any SoC by lobiusmoop · · Score: 4, Interesting

      Some other people doing low-cost A10/A13 board stuff:
      Olimex are developing an A13-based board currently.

      Gooseberry is an A10-based board sourced from a tablet designer.

      --
      "I bless every day that I continue to live, for every day is pure profit."
    2. Re:Highest bang-per-buck ratio of any SoC by Vairon · · Score: 4, Informative

      The Allwinner A10 has an incomplete 72 page summary of features that calls itself a datasheet compared to a fairly nice 205 page peripheral datasheet for the Broadcom BCM2835 SOC in the Raspberry Pi.

      The Allwinner A10, like the BCM2835, uses closed source proprietary libraries to access 3D features of its GPU. The MALI 400 GPU is being reverse engineered which is why there is a preliminary open source GPU driver.

      The Allwinner A10 CPU/GPU are faster but less efficient and use more power than the Raspberry Pi's BCM2835.

      The Rhombus Allwinner A10 has no final cost yet unlike the Raspberry Pi. They are hoping to hit a $15 price point if they purchase 100,000 units. The Raspberry Pi is available today at $35 which was achieved with only an initial 10,000 units purchased.

    3. Re:Highest bang-per-buck ratio of any SoC by Microlith · · Score: 2

      comes with open source GPU driver, unlike RasPi.

      Really? Where are the sources? I know the limaproject is trying to implement one, but I have yet to see an open source driver that does anything more than bare-bones 2D support, let alone actual 3D.

    4. Re:Highest bang-per-buck ratio of any SoC by citizenr · · Score: 2, Insightful

      The Raspberry Pi is available today at $35

      Stop lying. Its LISTED on a site somewhere, but its NOT available. You can click it, send money and wait till November, thats not selling, thats pre ordering.

      --
      Who logs in to gdm? Not I, said the duck.
  4. Re:English please? by nadaou · · Score: 4, Informative

    > There are editors somewhere aren't there?

    No, generally not. This is a semi-automated crowd sourced news aggregation site not a tech news magazine. Spend some time at firehose.pl to understand how it works and how stories get voted onto the front page, typically more verbatim* than not.

    * if that made you cringe then comfort yourself in knowing that it was only a partially unique experience.

    --
    ~.~
    I'm a peripheral visionary.
  5. Master & Archimedes models next please by drunkahol · · Score: 3, Interesting

    Loving my Model B Pi, but can't help thinking that there's a niche wanting filled for systems that can actually function as a near normal desktop. Something with more grunt, more RAM etc. My phone is a quad core ARM CPU, why not a system a little larger than the Pi for the older audience who remember the Model B, Master & Archimedes the first time round. We have the cashflow and desire to use.
    (just don't make an Electron version - even if it has Plus 1 and Plus 3 expansion modules like I had back in the day!)

    D

    1. Re:Master & Archimedes models next please by ReeceTarbert · · Score: 2

      Loving my Model B Pi, but can't help thinking that there's a niche wanting filled for systems that can actually function as a near normal desktop. Something with more grunt, more RAM etc.

      What about nettops, then? Okay, they cost more than the Raspberry PI, but you get a fairly decent, low power and small footprint desktop computer that can run your OS of choice while being a more than competent HTPC.

      For what it's worth, I've been using a ZOTAC ZBOX HD-AD01 for more than one year as my main computer (while much more capable hardware is mostly gathering dust) and just the other day Tom's Hardware compared seven of them in great detail.

      RT.

  6. Re:POS by fuzzyfuzzyfungus · · Score: 2

    While crass, the grandparent post is arguably a worthwhile question when you compare the Model A to the Model B.

    $10 for ethernet and a second USB port is a smaller premium(and, of course, better integrated) than pretty much any peripheral option, and some sort of networking is an extremely convenient feature. The 'A' seems like a very niche sort of device.

  7. Re:POS by Zaiff+Urgulbunger · · Score: 4, Interesting

    $10 for ethernet and a second USB port is a smaller premium(and, of course, better integrated) than pretty much any peripheral option, and some sort of networking is an extremely convenient feature. The 'A' seems like a very niche sort of device.

    I think most nerds will want the model-B, but note that if you stick a WiFi dongle in the single USB port of a model-A, you do still have a fully network accessible device... but likely it'll be easier to do development for that using a model-B. The main "wins" for the model-A are (1). it costs less, and (2). I believe power consumption is quite a bit lower.... I seem to recall seeing a video where Eben indicated that the networking/usb-hub chip uses quite a lot of power on the model-B.

  8. No, it's not easy by DerekLyons · · Score: 4, Funny

    "It's easy to forget that the Raspberry Pi currently shipping is the more expensive model of the board.

    No, it's not easy - because Slashdot reminds us of every trivial thing about the Raspberry Pi on a daily basis.

  9. Re:English please? by ChunderDownunder · · Score: 4, Insightful

    since US-centrism is in their official policy, you'd think they would use english correctly.

    Haha.The American language forked from 'English' in 1776. Any mutual intelligibility is purely coincidental! :)

  10. Model A vs. Model B - History Repeats Itself by Dogtanian · · Score: 4, Informative
    Seems like history repeating itself here. As Slashdotters may know, the "Model A" and "Model B" designations are a homage to the two original versions of the BBC Micro. In that case (as Braben himself will be aware!), the more powerful Model B was by far the more popular of the two despite its higher cost. The "BBC B 32K" became the canonical version of the computer, with the Model A little more than a footnote.

    So is this the same situation we're seeing here?

    (just don't make an Electron version - even if it has Plus 1 and Plus 3 expansion modules like I had back in the day!)

    Yes... given that the Acorn Electron- intended as a cut-down "home" version of the BBC Micro- was a flop (*) that led to Acorn being taken over, that would probably be A Bad Thing. Also, as far as I know, the Electron was pretty underpowered and needed those add-on modules for any "serious" expansion.

    (*) Sort of- apparently what happened was that there *was* quite high demand for it, but they had problems with the custom ULA chip and couldn't get enough out in time for Christmas. By the time they had the problem sorted out in the New Year, those potential customers had bought rival machines instead and Acorn were left with warehouses full of unsold Electrons.

    --
    "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
  11. Re:oh boy by jon3k · · Score: 2

    Would love to see some realistic options if you've got em. Something for the average human that can throw a pre-built linux distro onto an SD card and be off and running. Seriously, not trolling, I've been pining over a raspberry pi forever and I'd love to see some other options.

  12. Someone set up us the bomb. by Latent+Heat · · Score: 2

    C'mon people, has All Your Base Are Belong to Us slipped from the Slashdot lexicon?

  13. You all started somewhere. by ax25-ack · · Score: 4, Insightful

    I think the project is a good one. I cut my teeth on an on sale TS-1000 from a catalog store Montgomery Wards that had it on closeout for $35.00. Call me stupid, but the hours I spend mashing the membrane keyboard learning every last bit of the z-80 and what it could do still serves me well!

  14. Re:POS by MadCow42 · · Score: 5, Interesting

    I'm using the RPi to drive a prototype device that I'm building. Currently it's just driving two real-time stepper motors (or close to real time), and doing a great job of it. For our production device though, we don't need Ethernet, and only want/need one USB - so the $10 savings and lower power consumption is perfect.

    As for why we'd use an off-the-shelf board? Why not - it does everything we need, runs an off-the-shelf operating system, and is easy to program/update/use.

    Why re-invent the wheel when we have areas where we can get a lot more value out of our time. As you seem to support - it's a great board!

    MadCow.

    --
    I used to have a sig, but I set it free and it never came back.
  15. Re:oh boy by hamster_nz · · Score: 2

    A bit harsh... I've got a RPi, cost NZ$53 (US$40ish).including shipping. and 15% tax, so US$36.90 before tax.

    Works a bit better than the other ARM boards I've got (the software support is really crap on some no-brander ARM boards).

    I've managed to use the GPIO pins for simple stuff too (e.g. with a LVTTL serial to USB) without frying them.

  16. Re:POS by petermgreen · · Score: 2

    Two reasons

    1: two USB ports isn't really quite enough, I want enough ports to have a keyboard, a mouse and a USB flash drive plugged in at once.
    2: i've had more trouble with the SMSC chip used on the Pi than with other USB ethernet chips

    So i'd rather have a model A and pair it with http://cpc.farnell.com/1/1/56475-hub-3x-usb-ethernet-blkgrey-psg90189.html. Total cost is about the same when you consider that the USB hub with ethernet comes with a PSU that can supply the Pi (they don't mention that in the description but i've bought several and it comes with a 5V 2.5A power supply).

    --
    note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register
  17. Re:English please? by TheRaven64 · · Score: 4, Funny

    I think you mean that American English has refused to incorporate bug fixes from upstream.

    --
    I am TheRaven on Soylent News
  18. Re:Vaporware by BlueLightning · · Score: 4, Informative

    Rubbish. Mine was one of the original orders and it has been fulfilled already. A friend also ordered well after the launch day and has received hers too.

    Next...

  19. Re:hooray by Anonymous Coward · · Score: 2, Insightful

    My God, it's almost as if Slashdot are posting articles that a large proportion of it's readership might actually be interested in. The bastards!

  20. Re:Distributer Shipping Still Too Expensive by drinkypoo · · Score: 2

    If I order a $35 gadget from dealextreme they often mark it signature required, but I still get free shipping from China.

    --
    "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"