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Amanda Wozniak
Works at Wyss Institute/Harvard University
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Amanda Wozniak

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This is exciting! 
 
Redwire's entry into the IPSO 2013 Challenge: http://www.ipso-alliance.org/challenge2013

This is an energy harvesting current transformer (and a TH12 for good measure :) ) The current transformer measures the current on the load and it's sampled and transmitted wireless to a server on the internet. The device is powered by harvesting a very very small amount on energy from the load current --- no batteries or other wires are needed. By doing so we make installation much easier (and cheaper) so that more buildings can get end-use power monitoring and operate more efficiently.

Part 1:
IPSO 2013 Redwire Harvesting CT setup Part 1

Part 2:
IPSO 2013 Redwire Harvesting CT setup Part 2 (for public)
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Nicely done! 
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Amanda Wozniak

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Anyone in the Greater Boston Metropolitan Area have an ESD simulator that I could borrow for about two weeks? I need to, uh.... zap some, uh.... circuits.

This is actually a serious question. I'm trying to specifically diagnose and then mitigate why we have an intermittent failure, and our best guess is ESD sensitivity. 
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Len Popp's profile photoTracy Hall's profile photoBoris Dieseldorff's profile photo
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Like Len's:
http://dev.emcelettronica.com/esd-test-pcb-homemade
http://www.edn.com/design/other/4349747/EDN-Access--09-12-96-Simple-ESD-gun-tests-IC

Sadly EDN's images don't work, so you can't see a schematic. 1996 issues should be available in a library, I'd wager.

Depending on what you think is causing the issue, you can also do a much lower voltage square pulse from a current source (a BJT's what I've seen), for a much longer time than any real esd event. This would work in the case that the integrated power is what's causing a problem (eg, diodes crow-barring).
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Amanda Wozniak

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I love Flylogic Engineering. This. Much.
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Chris is the man.
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Amanda Wozniak

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HANDYPANTS - Happiness is understanding conversion of competing datasheet metrics. And, by the way, if you've never gone through the process of reverse-engineering a transistor datasheet to find all the fundamental properties of the junctions... you should. It will teach you a very important lesson on specsmanship.

http://www.coe.montana.edu/ee/jshaw/classes/EOSystems/F10/ClassResources/EE482_F10_LEDPhotoRadioConversions.pdf
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Power semiconductor variance is amazing. I remember looking at, what appeared to be, a mirror spec from two different manufacturers. However, even though both were rated to handle an amp without a heat sink, one definitely believed the rating to mean where the device demonstrated spontaneous combustion while the other thought it should just just warm.

This was how I learned not to test TO-220 device temperatures by touch. Though, the scar is quite a conversation piece.
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Amanda Wozniak

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The ghost of Grace Hopper will come back from beyond the grave to torment anyone who says "women can't program." Zach Weiner... I.... I think I love you. Also, if you (yes, you!) don't know who Grace Hopper is - we can't be friends anymore. But you can possibly begin to make up for it by watching some of her interviews (which abound in plenty on the YouTubes) to see how amazing she really was.
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Albert Straub's profile photoAndy Panayotoff's profile photo
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When I met her in the late '80s she was as sharp as anyone on campus. There must be something to that stuff about keeping your mind active as you age.
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Amanda Wozniak

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The SOPA/PIPA awareness blackout is happening today - take this opportunity to put your zip code into the Wikipedia home page, find the information for your congressional representatives, and contact them. If you thought the (lack of) net neutrality language in the 2006 telecommunications reform bill was bad, it's nothing compared to this.

Basically, we all have an obligation to act to defend an open and censorship-free Internet. Get to it.
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I love how Feinstein took down her email contact page today. Stay classy, Senator.
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Have them in circles
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Amanda Wozniak

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Did you ever doubt that a grass roots movement in engineering and education could reach hundreds of thousands of students and educators? DOUBT NO MORE. Open Source Hardware is now a national deal. That's the power of companies like Adafruit and the OSHW community. 
 
I was selected to join President Obama in a Fireside Hangout this Thursday 2/14 at 4:50pm EST on Google+!

We’ll discuss issues that are top of mind for citizens, and I’d love you all to help shape this conversation. Submit your questions to http://www.youtube.com/whitehouse and the President will answer questions that are voted to the top.

Don’t forget to RSVP here for a reminder to tune in on Thursday- http://goo.gl/7pxfM.

+The White House +Google+ 
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Amanda Wozniak

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Anyone making any type of device that has to have reliable operation should think about both security models, the robustness of any multi-layer protocol abstraction, and also think about maybe not about making the input parser/radio interface Turing-complete. But the "insulin pump hacking" from DEFCON has definitely done its job of starting an industry wide dialog about device security.
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I'm a Roboticist ;)
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Amanda Wozniak

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The Wyss Institute is growing! We're looking to hire a Staff Electrical Engineer and Staff Mechanical Engineer in the Anticipatory Medical Devices Platform. So, in the event that you ever thought you'd like to both have my job AND work with me, too, then click through for the posting and apply.
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Oh man. . . there is the perfect position for me listed! Too bad I am now on the wrong coast.
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Amanda Wozniak

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Repost from the 'fruit: I love it when people work out the math to make generalized tools to solve useful problems. It takes the requirement for intuition and "feel" out of construction and helps put design in the hands of novices. WHICH IS FANTASTIC.
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Amanda Wozniak's profile photoCharles Ballowe's profile photo
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I think engineers who also happen to require purely analytic challenges might also count as "novices," Charlie. Quick, everyone! Move outside your comfort zone! :D
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Amanda Wozniak

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I encourage you to sign Bunnie's letter to the Library of Congress - or send your own.
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Amanda Wozniak

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Amazing - amazing - amazing. This is an absolutely hilarious presentation on a Python-based tool for genome analysis. Via the twitterverse.
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Paul Anderson's profile photoBoris Dieseldorff's profile photoBritt Durbrow's profile photo
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I like the thought and premise. I like the cats. But what really brings it all together is the Ackbar joke.
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Have them in circles
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Employment
  • Wyss Institute/Harvard University
    Staff Engineer, present
  • MIT Media Laboratory
  • Intel Corporation
  • IBM
  • MIT Health Sciences & Technology Division
  • Analog Devices
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