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Gelatin GRIN Lens
Recently, I’ve been fascinated with flexible optical elements. In particular, I’ve been experimenting with gradient index lenses. Gradient index materials are typically constructed with using semiconductor processes (doping some substrate). In addition, they are typically small both because of their fabrication method and because of chromatic aberrations that are more prevalent at larger sizes. GRIN […]
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Beer
Brewing is an excellent hobby. It develops knowledge of chemistry, thermodynamics and biology and the result is quite delicious. On this page, you’ll find a brief overview of equipment, recipes, and techniques we’ve developed. My friends and I have brewed around a dozen batches, so take the following advice with a small grain of salt. […]
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GNURadio in OSX
After a little effort, I got gnuradio running under OSX with MacPorts. Thankfully, there is a fairly nice package in macports which contains most of the dependencies needed to install everything for gnuradio. Unfortunately, the most recent version of sdcc is not compatible with usrp. So, to install gnuradio, you need to first install an […]
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RoboCup
Project Overview For the past three years, I have been the team leader for the Georgia Tech RoboJackets Small Size RoboCup team. RoboCup is an international robotic soccer competition designed to drive research in robotics, multi-agent systems, artificial intelligence and the systems which compose those fields. The stated goal of the RoboCup Federation is to […]
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MARK VIII – Belgian Tripel IPA
This is an attempt at a Belgian Tripel IPA. There are only a few commercial examples including Houblon Chouffe Dobbelen IPA Tripel, Urthel Hop-It. We brewed Wednesday Feb 17, 2010. Shooting for around 8.8% ABV, 58 IBUs. Hopville Recipe 6:23 2# Belgian Pale, 2# Belgian Pils in medium grain sock placed in 3 gallons of […]
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EagleCAD and Advanced Circuits
UPDATE I have posted an automated tools for gerber export here UPDATE So congratulations! You just routed 3000 nets and placed 250 components! You are probably going a little crazy, seeing things that could be placed more efficiently and thinking about how you would route them. Well you’re not out of the woods yet! You’ve […]
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4D Tracker
Introduction There are approximately 515 million cases of malaria every year, of which roughly three million cases are fatal [5]. To combat the spread of malaria, often the carriers (mosquitoes) are targeted. In the past, mosquito larvae have been attacked with varying degrees of success, but sometimes with notable environmental impact (one solution involves flooding […]
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MARK VII – Amber IPA
This started as a Sweetwater IPA clone, but again, got changed around and became more of a Amber IPA. We’ve started using hopville to design the recipes. The methodology goes somewhat like this: find hint of clone recipe (alcohol, color, HBUs), use suggested hop profile, design malts for color and alcohol. Our hopville recipe is […]
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Mark VI – American Pils “B-Day Brew”
Mitch and I had our hearts set on brewing up a SweetWater IPA clone, but Hop City’s homebrew supplies were nearly cleaned out. We still wanted to brew so we threw together a recipe based loosely around Whitey’s Pale Ale. Brewed the day before my birthday (9/20/2009). The actual recipe bears nearly no semblance to […]
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MARK V – Leftover Ale
After doing four batches we had a few leftover ingredients. From those was born this ale. Brewed July 23, 2009 9:45 PM 8.5 ounces crystal malt 90 lovibond in grain bag placed into 2.5 gallons bottled spring water in the wort pot. Began heating wort to 160-170° F. 10:14 PM Wort at 160° F. Kept […]
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MARK IV – Whitey’s Gone Fishin’ Pale Ale
This one is in bottles right now! It was loosely based on “Whitey’s Gone Fishin’ Pale Ale” found in The Complete Joy of Homebrewing. Again, we couldn’t help but make some changes. Brewed July 12, 2009 6:45 PM Two gallons of bottled spring water, six pounds golden light Briss malt extract, 0.6 lbs Alexander’s Sun […]
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SeaWolf
During the Spring and early Summer of 2009 I developed two 10.5 foot long, 325 pound unmanned underwater vehicles (UUVs). My role was technical leader, I oversaw all design of the vehicles. Underwater vehicle construction remains somewhat of a black art where effective design principles are often found through trial and error rather than analytically. […]
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MARK III – American Amber Ale
This was our first beer where we constructed the recipe ourselves. It is loosely modeled after an American Ale from the Complete Joy of Homebrewing. We of course made some changes. Brewed May 13, 2009 9:10PM 8oz crystal malt added to 2.5 gallons of water. Water temp brought to 160-170 degrees Fahrenheit. Yeast pouch activated […]
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Bugler
In a Scout troop, bugle calls are used to communicate messages to a large number of people over a large area. Unfortunately, not every troop has a scout which can play the bugle. Enter the Bugler, affectionately called “the robot” by the scouts. History In 2005 I cobbled the first prototype (Hydra – because it […]
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MARK II – Brewer’s Best English Brown Ale
Better than Mark I, still had some off flavors. Suspect this is from pouring the wort over two gallons of commercial ice to cool it.
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MARK I – Brewer’s Best American Ale
For our first recipe, we chose a “kit” (like making a cake from a box) from Brewer’s Best – and American Ale. This was a good call. Though it turns out that you can essentially completely make up a recipe, starting with a kit built confidence to develop our own brews. The first batch, brewed […]
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Monkey
Presently the only platforms to study human robotics interaction are expensive custom platforms which are developed over the course of several years at a very high development cost. Thanks to rapid growth in the toy industry, and the dramatic economies of scale, robotic toys have become available at very low cost for the functionality they […]