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Eben Upton Muses on the Raspberry Pi, Scratch and, His Love For Parallela

super_rancid writes "In a 7,000 word interview with Raspberry Pi's founder posted on TuxRadar.com, Eben Upton talks about the challenges of managing such a successful project, what may be in the Raspberry Pi mark 2, and why he wishes he'd backed the Parallela Kickstarter." On interesting answer: "We were thinking of booting into Python or booting into Scratch. For younger kids, boot into Scratch. Have an environment where it’s Linux underneath, boots into Scratch and hold down a key at a particular point during boot and it doesn’t boot into Scratch it just drops into the prompt. So you can play with Scratch for six months, once you’re happy with Scratch you turn over the page and 'Hold down F1 during boot,' and it’s like 'Oh look - it’s a PC!' So I think that’s something we’d really like to do."

22 of 71 comments (clear)

  1. Re:More RAM by CaptainOfSpray · · Score: 4, Informative

    Not enough room on the SoC, apparently. 512 MB is the max that will fit, without a complete redesign (which no-one wants to do, not enough value in it).

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  2. What's next? by XNormal · · Score: 3, Funny

    In the back of your mind, you havenâ(TM)t got Raspberry Pi 2?

    No, not Pi 2. It must obviously be named 2 Pi.

    --
    Stop worrying about the risks of nuclear power and start worrying about the risks of not using nuclear power.
    1. Re:What's next? by Anonymous Coward · · Score: 5, Funny

      Raspberry Tau?

  3. I'd like to see his thoughts on... by Anonymous Coward · · Score: 2, Interesting

    ...how useless and overhyped the Pi is today - and has been since more than a year back - when compared to the some of the so much more capable "Android sticks" that cost not much more. Yes, everyone knows that the Pi has a composite video output and a dedicated ethernet output, but that's not what it all comes down to, especially since most of the "Android sticks" come with 2 (or more) USB ports and Wi-Fi these days. What are his thoughts on offering the barely usable amount of 256/512 MB of RAM and just a single CPU core (spreading applications across multiple cores for smoother multitasking is the gain here, not eventual software that threads) when there are $35 "Android sticks" that come with 1 GB of RAM and two CPU cores that are even clocked higher?

    1. Re:I'd like to see his thoughts on... by Nevo · · Score: 5, Informative

      I think you misunderstand the purpose of the Pi. The Pi was developed to be an educational tool for high-school aged kids. The fact that hackers and makers found it useful and jumped on the bandwagon is a fortunate side effect, but wasn't a design goal of the Pi.

    2. Re:I'd like to see his thoughts on... by Grench · · Score: 5, Interesting

      Useless? Nope. It's not exactly a stellar performer, but it has a lot of uses. Remember, it's designed as an educational product, rather than as a PC replacement. It is not as powerful as your average desktop PC. But it is not useless.

      My own Pi runs Samba4 (it's an Active Directory domain controller for my home Windows PC network, and runs a DNS service), it runs CUPS (for network printer sharing), it runs CrashPlan (for backing up my other PCs' data), and it runs the LAMP (Linux/Apache/MySQL/PHP) stack so that it can run some dynamic web-based services - the ones I use are Cacti and Observium (for graphing/monitoring my Cisco devices), and Horde Webmail/Groupware.

      This is exactly what I used to use an old AMD Sempron box for. Granted, that AMD box was free, and more powerful - but it's bigger, noisier, makes more heat, and consumes more power than the Pi does.

      I think the Pi is a fantastic project. It would be nice to see a more powerful ARM CPU and extra RAM on the next version of the board, but I'd be just as happy to see Ethernet being separated from the USB bus, and a SATA connector with the option to set your Pi up to boot from a hard drive out of the box (note that mine does run off a USB hard drive, but it still has to use the MicroSD card as a bootstrap - a SATA controller could also mean faster I/O throughput).

      --
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    3. Re:I'd like to see his thoughts on... by omnibrain · · Score: 3, Insightful

      So please show me the GPIO Interface of your "Android Stick".

    4. Re:I'd like to see his thoughts on... by guruevi · · Score: 4, Informative

      I think you underestimate how useless the Android sticks are and how underpowered it's GPU. The RPi GPU clocks at whatever the CPU clocks at (700MHz), the Mali GPU at 500MHz, the MK802 clocks not at 1GHz but is underclocked to somewhere around ~780MHz to keep it relatively stable. Mind you that you can also clock the RPi to 1GHz if you don't mind a relatively unstable board (800MHz is typically okay).

      I developed an embedded media platform on the Pi and I've tested some other designs as well, the Android stick while being $15-25 more expensive was slower doing ffmpeg tasks and had problems handling more than one video stream, at 100% CPU (ffmpeg conversion tasks) the Pi would chug along for hours while the Android would regularly reboot and heat up tremendously in the process, it also demands a lot more power (roughly double that of the Pi). The Pi overlays one video stream on the other without much of a hiccup. If the Android did any good it was detecting issues with my programs when they were unexpectedly interrupted.

      --
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    5. Re:I'd like to see his thoughts on... by QuasiSteve · · Score: 2

      Presuming it can be plugged in - there's always the IOIO, though that does add another few $$ to the price. But since most people tend to use their RPi as little more than a media streamer or bitcoin mining host for FPGA's / ASICs, etc. then the Android devices are a better option - and GPIO can be added on later if they wanted to (and can then be re-used if they switch/upgrade their Android device, etc.).

    6. Re:I'd like to see his thoughts on... by citizenr · · Score: 2

      get one based on A10 and you will have plenty of GPIOs

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    7. Re:I'd like to see his thoughts on... by drinkypoo · · Score: 2

      But now you can get quad-core sticks for $100 or less. So while the Pi is still cheaper, it's not that much cheaper. The issue is as you say reliability. The cheap ones tend to be garbage.

      --
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  4. Boot into a REPL is the right path by thelovebus · · Score: 4, Interesting

    When I first read about the Raspberry Pi I was excited because I thought they were going to recreate this boot to a BASIC interpreter-type of experience we used to have on Apple II's and TRS-80's and the like. That's the sort of experience that they claimed inspired the raspberry pi, and they claimed that sort of programming-based, learning-intensive experience was what they wanted the pi to be about.

    So, I was very disappointed to see that by default, a raspberry pi really is "just a pc" that boots into your typical CLI, and the "getting started" instructions actually have the new user start up X right off the bat. Providing scratch and a python IDE are nice and all, but I feel like all the normal trappings of "just a pc" take focus away from the real point of the pi.

  5. Re:More RAM by ArcadeMan · · Score: 2

    I'd rather use a 1$ AVR.

  6. Splitscreen python with turtle graphics by Anonymous Coward · · Score: 2, Informative

    Something like this should boot in python, with split screen, half of the screen for turtle graphics (yes python includes turtle graphics in its standard library).
    Then we have something like the LOGO environment of old.
    While running a long piece of code it should full screen the turtle graphics, with using ESC to terminate the run and return back to split screen.

  7. Re:Not with that CPU by guruevi · · Score: 4, Insightful

    However it's really good at doing things that use the GPU, it's a lot more stable and faster than the alternatives at that price point. A single core 700MHz CPU with 256/512MB RAM and 128MB of VRAM was all we had a couple of years ago and we did really well with it. Sure you won't drive the most modern accelerated GUIs with it but a static, usable GUI works pretty well.

    Disclaimer: I have developed a professional embedded advertisement system on the RPi with currently about 50 Pi's deployed.

    --
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  8. Re:Not with that CPU by Anonymous Coward · · Score: 2, Interesting

    More RAM is utterly pointless. The slow CPU can hardly make good use of what's already there. Even with 2GB, it would still not become a usable desktop system.

    Hello Mr. Monoculture.

    Your MP3-player doesn't even have 256MB ram. Does that make it pointless to add more since it won't turn into a usable desktop system if you do?
    The Pi was never meant to be a desktop system or even a media player. Just because a lot of hobbyists picked it up as a cheap replacement for HTPCs or the gazillion different ARM developer cards doesn't mean that 2GB ram would be pointless for its intended purpose.
    It have been clear from the start that the Pi is intended to be an educational toy to teach children how computers work. The step to boot into a programming language will make sure that the kids of today will have the same opportunity to learn that todays programmers had when they were young.
    So, you are among those that use it outside of its intended modes of operation. That is great since it increases the market for the device but it feels a bit too much to use arguments that indicate that anything that doesn't turn the Pi into a desktop system is pointless.

  9. Re:Scratch is cool but... by pastafazou · · Score: 2

    hmm, just had a look, and from the examples it looks like processing is all written code. I don't think my 8 year old is ready to start learning about syntax. Scratch is extremely visual, as in the actual code is invisible to the user. They build their programs with colored blocks that snap together. It's really done well as far as getting kids to start thinking logically. I'd like to see it expanded so they can continue to develop more advanced projects. Switching them to pure code isn't really an option at this point.

  10. scratch? by brickmack · · Score: 2

    Why would you subject anyone to that

  11. Re:Scratch is cool but... by Anonymous Coward · · Score: 2, Interesting

    Time to move up to Alice [http://www.alice.org/]. My kid was using Scratch for a while and got bored (hit a wall). Just found Alice and plan to install and go through the tutorials with her this weekend.

  12. Re:Successful? by horza · · Score: 2

    No wonder you are posting that drivel as anon. Those USB sticks are terribly under-powered, I have a $99 one lying in a drawer as it couldn't handle playing back non-H264 video. There is no way they can handle the kind of uses I hear the Pi is being used for. Even high bit-rate video make the thing blisteringly hot to the touch.

    And Android is poor for a general purpose educational device. You can't drop straight into C, Python, etc. You can get some hacks but they are no substitute. As an educational tool, Android is a very bad joke.

    The Pi is a great device at a great price, but please keep Android the hell away from it.

    Phillip.

  13. Re:as always full of shit by Anonymous Coward · · Score: 3, Informative

    You listed an Android tablet and two Android sticks. I think you missed the part where he said "as good as Pi", since none of those fit that criteria.

    What you should have said was BeagleBone Black, $45:
    http://beagleboard.org/Products/BeagleBone%20Black

  14. Re:More RAM by OdinOdin_ · · Score: 2

    Why not a redesign? What's so great about the current one?

    It was cheap! Someone else already paid for all the relatively expensive SoC development work on it. Wasn't a large order of SoC chips originally canceled by a large customer of Broadcom. So this is a contributing factor to making the Raspberry Pi fly. Maybe this is a myth I read but I've always believe this to be the story.

    Now of course we can have this (RaspberryPi Mk1 A/B) level of specification/performance cheaper if we build / design something new today, but everyone today expects more, as your posting explains. So the problem is confining the project to the project goals.

    Good on Ben for doing a grand job of that.