[conspire] Wondering about the "parallela" Ubuntu board

[Ross Bernheim]

Rick, 

The Raspberry Pi was designed to do a specific job. Unnecessary things were cut. It was not designed as a general purpose computer with a lot of peripherals attached to the USB ports. A powered USB hub is needed to handle peripherals. Get a hub with 3 to 4 Amps capability. I’ve had good luck with a 7 port hub from plug able.

On Apr 12, 2014, at 2:20 PM, Rick Moen <rick at linuxmafia.com> wrote:

> Quoting Ross Bernheim (rossbernheim at speakeasy.net):
> 
>> Simply put, if the hardware can do your job, then pick the one with
>> the best software and community support.
>> 
>> Life is too short to fight hardware and software. Hardware is
>> inexpensive. $35 to $65 will buy a lot of hardware these days.
> 
> What you said.  If dipping into ARM-based small-device computing, I
> would be very careful to stick with the safety-in-numbers principle
> unless I were happy to waste untold hours dealing with frustrations and
> lengthy debugging -- which I'm not.
> 
>> The Raspberry Pi has sold over three million Pi’s and has a huge
>> support community. It comes with the Wolfram language as part of the
>> Raspian distro. There are a number of other distress available with
>> more being added. The Pi has gone well beyond critical mass. Do note
>> that the Pi is far from perfect. It has no real time clock, serial is
>> +5V not RS232. Both of these can be overcome with a small board for
>> about ten dollars if it is important for your use. If you need to talk
>> to a large amount of hardware, then use the communications library to
>> talk to an Arduino to handle that which it does better.
> 
> If interested, one should also spend time reading relevant discussion
> forums to discover common problems and mistakes.  Reportedly, one of the
> very most common mistakes with Raspberry Pi is relying on it (more than
> very minimally) to power external devices over USB.  Suck too much
> current, and the Pi will become either unreliable in operation or
> physically damaged.
> 
> Used within its capabilities (e.g., maxing out at 256 or 512MB RAM,
> depending on model), the Pi is a major phenomenon in muliple areas of
> application.  Me, I'd need a compelling reason to opt for anything else.
> 
> 
> 
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