Simple Raspberry Pi Rack

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=40&t=34987

by ausjke • 13 years ago

105 24 13 years ago

raspberrypi.org

dewey• 13 years ago

And if you like to play with legos: http://i.imgur.com/75XSCWX.jpg

http://www.lowendtalk.com/discussion/9372/colocating-my-rasp...

hkmurakami• 13 years ago

ooh I remember seeing this Lego rack. IIRC it's from a professor's computing project, with the rack built by his son?

hamdiakoguz• 13 years ago

Original source: http://www.southampton.ac.uk/~sjc/raspberrypi/pi_supercomput...

dmcg• 13 years ago

I like articles that put the hack back into Hacker News.

vixen99• 13 years ago

"Does not exist"

stusmall• 13 years ago

Its a shame they don't support PoE. It'd make the whole thing a lot easier and cheaper

ralph• 13 years ago

AIUI, and you may know this, the reason they don't is it would make each Pi considerably more expensive.

ultimoo• 13 years ago

Very nice. However, do you have any ideas what can be accomplished with a multi-computer rack infrastructure that costs about $500?

It is probably too weak to run virtualization (which racks are used for these days). It is also not trivial to set up cluster computing wherein these multiple computers can meaningfully share memory and computing resources. Many of us can afford a 7 computer rack for less than $500, but how do we use it?

mctx• 13 years ago

Dispy? http://raspberrypi.stackexchange.com/q/87/35

jjs• 13 years ago

Idea: each Pi could be placed in some carrying case (with power, external sensors, e.g. GPS), and individually taken out in the field.

Then, when the Pis are back home and networked together, they connect as a cluster and reconcile their individual data...

rubyrescue• 13 years ago

Erlang (or Elixir) runs really well on the Pi - and cross-node communication is brain-dead simple.

sstarr• 13 years ago

There's a link to this recent redesign at the bottom of the comments: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=40&t=4...

ck2• 13 years ago

USB 3.0 7-Port Hub for power

That has to be the most expensive power supply workaround ever.

Oh and part 2: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=40&t=4...

zdw• 13 years ago

I view it more as an novel solution. The Pi's power cable is Micro-USB, so buying things that interact with that standard rather than hacking up your own cables makes a bit of sense.

That hub is $50 USD: http://www.amazon.com/Plugable-Power-Adapter-VL812-Chipset/d...

So it works out to around $7 for each Pi, probably closer to $10/each with cabling, which is quite reasonable for a slickly put together setup.

That hub also has a 4A power supply, which is probably needed for a few heavily loaded Pi's.

toyg• 13 years ago

I'm tempted to replace the 2-yr-old DreamPlug I use as backup server with a Pi. Does anybody know how long a Pi would last if left running 24/7 ?

danarbaugh• 13 years ago

I've been running a 512mb Model B for 8 months now as my home's server. I think it has been rebooted twice due to power failure.

pstuart• 13 years ago

That looks cool and all, but what does one do with a rack these things? How does it compare with a cluster of x86 CPUs on a processing/watt basis?

GuiA• 13 years ago

An example of use is for educational purposes, to initiate students to MPI programming etc.:

http://www.southampton.ac.uk/~sjc/raspberrypi/pi_supercomput...

IgorPartola2• 13 years ago

Would anyone pay about $20/month to rent an RPi colocated somewhere in the states, along with a basic control panel (reboot, reinstall, virtual console access, etc.)? Something like a model B with a 16 GB SD card? Just curious if there is a market for this vs virtual servers.

rdouble• 13 years ago

$20/m is too high.

There was another posting recently where a guy co-located his RPi (or Beaglebone?) for less than $20 total over a period of 18 months.

IgorPartola2• 13 years ago

$20 is what you would pay for a comparable Linode virtual server.

You can also colocate your RPi for free in Amsterdam, but would you host anything serious there?

Ecio78• 13 years ago

https://news.ycombinator.com/item?id=5649317

Lerc• 13 years ago

Seems like it's missing an opportunity for linking the speaker to mic plugs in a daisychain for a cyclic network(of admittedly limited functionality)

Simple Raspberry Pi Rack

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