#385 - Raspberry pi

[Jan Goyvaerts I❤©]

The final Raspberry pi is slightly bigger than the original version mentioned in the episode.

http://www.raspberrypi.org/quick-start-guide

[Fabrizio Giudici]

Did you see also this?

http://arstechnica.com/gadgets/2012/05/new-74-android-mini-computer-is-slightly-larger-than-a-thumb-drive/

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[Jan Goyvaerts I❤©]

That's not too bad either, is it ? :-)

[Fabrizio Giudici]

On Wed, 23 May 2012 12:48:59 +0200, Jan Goyvaerts I❤©
<java.a...@gmail.com> wrote:

> That's not too bad either, is it ? :-)

I'm just trying to think to an excuse^H^H^H^H^H^H a smart idea about what
to do with that stuff so I buy one :-)

[Joseph Ottinger]

Well, once a decent JVM is available for the ARM platforms, you could use the pi or other such machines to build a local private java-based cloud for pretty much nothing - $350 for 10 machines, plus the infrastructure you'd need and the SD cards, and you'd be rocking. :)

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Joseph B. Ottinger
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Ça en vaut la peine.

[Casper Bang]

I'm just trying to think to an excuse^H^H^H^H^H^H a smart idea about what  
to do with that stuff so I buy one :-)

Phase 1) Make your own process historian and hook up sensors for electricy consumption, water consumption, heat consumption, temperatures, mailbox arrivals etc. Phase 2) Have a small webserver generate charts and prognoses for your devices, perhaps even Android gadgets and wallpapers. Phase 3) Add some intelligence feedback to control windows, radiator, exhaust fan etc. :)

[Joey Gibson]

On Wed, May 23, 2012 at 6:55 AM, Fabrizio Giudici <Fabrizio...@tidalwave.it> wrote:

On Wed, 23 May 2012 12:48:59 +0200, Jan Goyvaerts I❤© <java.a...@gmail.com> wrote:

That's not too bad either, is it ? :-)

I'm just trying to think to an excuse^H^H^H^H^H^H a smart idea about what to do with that stuff so I buy one :-)

Me, too. Of course, as luck would have it, both of the retailers listed in the Raspberry PI FAQ are currently sold out. :-(

Joey

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[Jan Goyvaerts I❤©]

I've heard you can pre-order though. And get it somewhere for the summer holidays.

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[Steven Siebert]

Arduino [1] would be cheaper for this stuff =)

[1] http://www.arduino.cc/ 

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[Jan Goyvaerts I❤©]

To my knowledge the RP is not a kit, but rather a computer.

[Steven Siebert]

Indeed, you are correct.  

I was responding to the use cases Casper put forth.  Not only would the Arduino be a cheaper platform, but the sensors themselves would be as well (RP doesn't have analog/digital IO pins exposed, as I see, so you would have to purchase much more expensive sensors with USB).  

RP might be good for the processing/web server component, but I've been using Atom boards to create JVM clusters to process and provide services like this.  At $80-100 for the mainboard and CPU and another $20-40, depending how much I need, it's a great price point for an at-home cluster.  My Atom "blades" (they sit in a wooden box/"cabinet" I created) normally only have 2 running (do general web serving, and manage the cluster), those are the only blades with discs (SSD). When I need more capacity, the cluster manager starts more disc-less blades (ethernet wake up on lan) and those blades download their TinyCoreLinux OS from the cluster, running in memory.  Depending on what they need to do, they may get data from the existing node members (currently this only happens in the form of Hazelcast re-partition or a straight file download).  Everything is in-memory on the processing blades, so I need to be careful.  The OS+JVM+other services take about 50MB last time I check.

Sorry for the rant...I have too much fun with this.  

S

[Kevin Wright]

On 23 May 2012 14:16, Steven Siebert <sms...@gmail.com> wrote:

Indeed, you are correct.  

I was responding to the use cases Casper put forth.  Not only would the Arduino be a cheaper platform, but the sensors themselves would be as well (RP doesn't have analog/digital IO pins exposed, as I see, so you would have to purchase much more expensive sensors with USB).  

Not so! Most of the RP expansions under development use the GPIO/I2C header, not USB.  You could use exactly the same sensors with any one of these expansions.

Plus you get a more powerful processor (not microcontroller) with more memory, upgradable flash storage, the ability to run linux (including an X server), and enough hardware graphics acceleration to support 1080p video playback

[Steven Siebert]

Wow! I didnt see this. That really expands its  potential use cases for it.  Thank you for pointing that out!

I'll look into this tonight...now I'm excited.

[Kevin Wright]

On 23 May 2012 13:42, Jan Goyvaerts I❤© <java.a...@gmail.com> wrote:

I've heard you can pre-order though. And get it somewhere for the summer holidays.

Well... I finally got to order mine yesterday, delivery expected in 3 weeks :)

If I recall correctly from the forums, then by the end of next month everybody will be given a chance to order... so long as they registered their interest... and did so when it launched on Feb 29th

Anyone who registered even a day later will have to wait a bit longer than that, unless some seriously exponential ramp-up of production can be arranged.

[Phil]

I'm waiting for the Cotton Candy - http://www.fxitech.com/products/ -
I can see some great use cases for these devices.

Use any spare HDMI monitor alongside your TV when watching sports to
provide additional information like, for example, the live timing data
from Formula One.

Prepare a presentation on your tablet or phone, then present to a
client by plugging the CC into any HDMI equipped monitor or projector
and use your phone to control the slides.

Small scale video wall anyone?

Almost any media or information source could be put onto a screen very
easily with these things.

On May 23, 11:19 am, "Fabrizio Giudici"

<Fabrizio.Giud...@tidalwave.it> wrote:
> On Wed, 23 May 2012 11:51:45 +0200, Jan Goyvaerts I❤©
>

> <java.arti...@gmail.com> wrote:
> > The final Raspberry pi is slightly bigger than the original version
> > mentioned in the episode.
>
> > [image: Inline image 1]
> >http://www.raspberrypi.org/quick-start-guide
>
> Did you see also this?
>

> http://arstechnica.com/gadgets/2012/05/new-74-android-mini-computer-i...

>
> --
> Fabrizio Giudici - Java Architect, Project Manager
> Tidalwave s.a.s. - "We make Java work. Everywhere."

> fabrizio.giud...@tidalwave.ithttp://tidalwave.it-http://fabriziogiudici.it

[Joey Gibson]

On Wed, May 23, 2012 at 8:42 AM, Jan Goyvaerts I❤© <java.a...@gmail.com> wrote:

I've heard you can pre-order though. And get it somewhere for the summer holidays.

That's cool. I will have to do that. My problem is that once I hear about something cool, I'm very much like Veruca Salt, and "I want an Oompa-Loompa NOW!"

Joey