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Wednesday, June 9, 2010

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Fwd: OpenPCR by Josh Perfetto and Tito Jankowski

---------- Forwarded message ----------
From: "Mackenzie Cowell" <mac@diybio.org>
Date: Jun 9, 2010 8:54 PM
Subject: OpenPCR by Josh Perfetto and Tito Jankowski
To: "diybio" <diybio@googlegroups.com>

Josh Perfetto and Tito Jankowski have built a working PCR thermocycler based on a CPU heat-pipe, a very accurate temperature probe, a peltier junction, a computer power supply, an arduino, a custom-milled aluminum block, various electronics, and a sexy laser-cut wood chassis.

Overall, I'm really impressed that they've found a way to combine essentially $300 of consumer products into what amounts to a industry-grade thermocycler.

They demoed it at MakerFaire 2010 this year.  I'm excited about their commitment to openness.   On their website - http://openPCR.org - and in person, they talk about building a platform that fundamentally is more hackable than other options.  So far, it looks good.  I can't wait to test one of these out on my own.  As open hardware licenses (TAPR?) become more widespread, I hope the openPCR team adopts one and blazes a trail for other diybio hardware efforts. 

Check out their site, http://openPCR.org, and consider contributing to their kickstarter project, http://www.kickstarter.com/projects/930368578/openpcr-open-source-biotech-on-your-desktop.

Good luck you guys!
Mac
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+1.231.313.9062 / mac@diybio.org / @100ideas

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eCoupled Wireless Power Technology | Fulton Innovation

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Pipes: reprap aggregation pipe

http://pipes.yahoo.com/pipes/pipe.info?_id=9f9341f7143d0ac77280af606b70b913

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Fabmetheus

http://fabmetheus.blogspot.com/

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Noise Productions » Blog Archive » HOLO 2.0 : Future Wearable Computer for 2015

http://noiseproductions.net/?p=633

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Fwd: [Open Manufacturing] Fwd: [erps] Fwd: Google Lunar X PRIZE Brief -- Week of June 1 - 8, 2010

---------- Forwarded message ----------
From: "Bryan Bishop" <kanzure@gmail.com>
Date: Jun 9, 2010 12:20 PM
Subject: [Open Manufacturing] Fwd: [erps] Fwd: Google Lunar X PRIZE Brief -- Week of June 1 - 8, 2010
To: "Open Manufacturing" <openmanufacturing@googlegroups.com>, "Arocket" <arocket@exrocketry.net>, <kanzure@gmail.com>



---------- Forwarded message ----------
From: Michael Wallis <mwallis@apple.com>
Date: Wed, Jun 9, 2010 at 12:11 PM
Subject: [erps] Fwd: Google Lunar X PRIZE Brief -- Week of June 1 - 8, 2010
To: ERPS List <erps-list@erps.org>


The latest news from the Google Lunar XPrize.

Michael Wallis
----------------------------------------------------------------------
mwallis@apple.com           C: 408 396-9037            W: 408 974-7139




Begin forwarded message:

From: Google Lunar X PRIZE <noreply@xprize.org>
Date: June 9, 2010 5:03:23 AM PDT
To: Michael Wallis <mwallis@apple.com>
Subject: Google Lunar X PRIZE Brief -- Week of June 1 - 8, 2010

Latest News from the Google Lunar X PRIZE 
Week of June 1 - 7, 2010
http://www.googlelunarxprize.org

Welcome to the Google Lunar X PRIZE Newsletter. This is a weekly brief about the competition that will be sent every Wednesday.

           
          HEADLINES OF THE WEEK


TEAM NEWS

C base Open Moon
ARCA

THE LAUNCH PAD
 
GOOGLE LUNAR X PRIZE IN THE MEDIA

TRACK THE COMPETITION (in many ways!)


 

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- Bryan
http://heybryan.org/
1 512 203 0507

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Fwd: [Open Manufacturing] Fwd: DIY liquid nitrogen generator

---------- Forwarded message ----------
From: "Bryan Bishop" <kanzure@gmail.com>
Date: Jun 9, 2010 10:49 AM
Subject: [Open Manufacturing] Fwd: DIY liquid nitrogen generator
To: "Open Manufacturing" <openmanufacturing@googlegroups.com>, <kanzure@gmail.com>

---------- Forwarded message ----------
From: Eugen Leitl <eleitl@gmail.com>
Date: Wed, Jun 9, 2010 at 8:55 AM
Subject: DIY liquid nitrogen generator
To: cryonics-europe@googlegroups.com, cryonics-germany@googlegroups.com


http://benkrasnow.blogspot.com/2008/08/diy-liquid-nitrogen-generator.html

DIY liquid nitrogen generator

You can generate liquid nitrogen (LN2) in the comfort of your own home
with some parts found on eBay. I have proven that this is possible by
purchasing surplus equipment and assembling it as described in this
post. I spent over a year searching eBay, so these parts are not
really easy to find, but the total bill for the whole system was under
$500. The device consumes about 300 to 400 watts of electricity and
needs no consumables (just atmospheric air). The LN2 is produced at a
net rate of about 1 liter per day. This comes out to 9.6 kWh/liter or
$1.15/liter, which is substantially cheaper than having the local
welding store fill up a thermos (granted the thermos must be cooled as
it is filled, thus requiring more than its capacity of LN2).

The most important part of this system is the cryocooler. This is a
device that employs a thermodynamic gas cycle to pump heat through a
very high temperature gradient. Many of these devices are
self-contained and require only an electrical input to start pumping
heat. The crycooler that I used was removed from a surplus RF filter
which used the cryogenic temperatures to maintain a superconducting RF
filter. http://www.suptech.com/home.htm

The crycooler itself has been fairly well documented:
http://books.google.com/books?id=POLgG5mma6IC&pg=PA75&lpg=PA75&dq=sti+cryocooler&source=web&ots=ZTMqWVv8Pu&sig=HbbSzGgnD3fIFxyKJjxFLuNEa9E&hl=en&sa=X&oi=book_result&resnum=1&ct=result

I converted the cryocooler to be water-cooled on the hot end and
attached a heatsink to its cold end. In operation, the cold end with
the heatsink is inserted into the top of a large dewar. Eventually,
the interior of the dewar gets so cold that the air will condense into
a liquid and drip down to the bottom.

The second key part of this system is the nitrogen separation
membrane. The is a device that accepts normal air, and produces
relatively pure nitrogen. The waste products (mostly H2O, O2 and CO2)
are vented into the air. Information regarding these membrane units is
easy to find on the internet, but good luck buying one! They are
nearly all produced for huge industrial installations, and those
manufacturers will not even return phone calls from interested
hobbyists. Asses! I spent a LONG time searching eBay, and eventually
found a very compact unit, which was perfectly suited for this
project. The nitrogen purity is dependent on the mass flow rate
through the device. This means the flow must be carefully monitored
and controlled. I will make another post that describes some fun stuff
to do with LN2.

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- Bryan
http://heybryan.org/
1 512 203 0507

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Ben Krasnow: DIY liquid nitrogen generator

http://benkrasnow.blogspot.com/2008/08/diy-liquid-nitrogen-generator.html

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Miro | Video Player | Free video and audio podcast player and torrent client.

http://www.getmiro.com/

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