[TriEmbed] Why *not* a Raspberry Pi ?

[John Vaughters]

Pete,

No argument here, they put alot of effort creating a Arduino/Linux combo, with a very nice networking setup. The libraries for this set up are significant and very useful. I see this as great potential for off the cuff sensor/control network, but at a significant price. Imagine walking into someone's house with a box of these and a computer and just placing YUNs with sensors around and cranking up your laptop with a Scada software and within minutes having a Scada control system. That is impressive. BTW, ScadaBR or Mango is what I generally use.

I cannot understand why the chose such a weak and unusual linux configuration. Maybe their intent was to work off the Wireless networking capabilities of linino, being a fork of OpenWRT. It comes default as a Wireless Access Point. Still, I would rather have a full blown linux distribution at my disposal. 

Having said that, I would be a buyer in the $30-40 range, which may happen if it flops at the current price. One thing is for sure, over the years we have all felt the pains of spending quite a bit of time to get arduinos networked and now look how easy it is. 

Simply Amazing!!!

John Vaughters


________________________________
 From: Pete Soper <pete at soper.us>
To: triembed at triembed.org 
Sent: Wednesday, September 11, 2013 6:08 PM
Subject: Re: [TriEmbed] Why *not* a Raspberry Pi ?
 


On 09/11/2013 12:50 PM, David Atoji wrote:

I came across Arduino YÚN -what do think of this option?
>
>https://www.youtube.com/watch?v=kwHVeWADs2Y
>
Interesting. A recurrent conversation at TriEmbed meetings has been
    the challenge of networking on Arduino systems, the cost and library
    footprint, etc vs just using a Raspberry Pi. This YUN system is
    perfect, it's just priced wrong by a factor of two :-) (What I mean
    is, if this add-on card worked with a $30 Uno the combination would
    be the same as a cost of a model B RPi. I should mention at this
    point that I'm not religious about RPi except in regards to its
    charter being about education and not making money. Whatever floats
    your boat.)

But being able to write a Python script in the Linux portion of this
    system would be pretty convenient. The nicely refined wireless
    config looks very interesting.  Keep a few things in mind for the
    Linux piece of this system:
  1) MIPS is a niche chip these days, so don't expect to find a
    large number of binary apps. Just about anything you can imagine
    being around for current Debian/Ubuntu/Linux Mint is available for
    Raspberry Pi. 
  2) Building binaries requires cross-tools, most likely on another
    Linux machine.
  3) The memory resources are modest, so big apps won't fly. The ram
    is 1/16th as much as an RPi. 

Correct me if I'm wrong, but it appears this would have to be
    ordered from Europe for the time being. Digikey, Mouser, and
    Element14/Farnell/Newark are listed as distros by the Arduino folks,
    but none of those three distributors show stock for this thing when
    searched for as an "Arduino YUN" 

While we're discussing very cheap ARM boards, here's one for $15:

  http://www.newark.com/freescale-semiconductor/frdm-kl46z/dp/87W8000

In the datasheet for this board it mentions "Easy access to MCU I/O via Arduino ™ R3 compatible I/O connectors." (Notice Newark is down to one (or probably zero by the time you read this). They'll get 400 more on the 27th.) But this is also a *very* modest system.

And here's another ARM-based eval board for $25 featuring Arduino
    compatible shield connectors:
   
 
http://www.newark.com/cypress-semiconductor/cy8ckit-042/eval-brd-psoc-4-pioneer-kit/dp/69W7455?Ntt=PSoC+4+ARM

Finally, here's something for folks who just can't decide what to do
    but have an extra $40. It can be a standalone ARM-based board, a
    bridge to an Arduino shield, or a bridge between a Raspberry Pi and
    an Arduino shield:
   http://www.newark.com/embest/embedded-pi/stm32-i-o-bridge-raspberry-pi-arduino/dp/67W2379?in_merch=Popular%20Products&in_merch=Popular%20Products&MER=PPSO_N_C_EverywhereElse_None

-Pete


>

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