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To listen to the show, you can click the player above tomorrow at noon, or visit the show page at BlogTalkRadio. We welcome your calls at (646) 915-8698.
You can also subscribe to the podcast of the show here.
MAKE Volume 17 goes really old school with the Lost Knowledge issue, featuring projects and articles covering the steampunk scene, makers creating their own alternative Victorian world through modified computers, phones, cars, costumes, and other fantastic creations. Projects include an elegant Wimshurst Influence Machine, an electrostatic generator built entirely from Home Depot parts, a "Florentine Flask" siphon coffee brewer, and a tea cup-powered Stirling Engine. The section will also cover watchmaking, letterpress, the early multimedia art of William Blake, and other wondrous and lost (or fading) pre-20th century technologies. Our guest is Gareth Branwyn, who edited this volume's special section. We'll also talk with Jake von Slatt, creator of the Victorian-era Wimshurst Spark Generator that appears on the cover of our current issue.
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I have just a few days left of guestblogging and more ideas than I can fit, so here's a list of some. For all of them, I'm thinking super-short here, just a few paragraphs each, outlining the "and here's why..." part. If you want to read any of these, please post in the Comments, and I'll write them up. Just one reader's expression of interest is enough to put me to work, and if no one cares, I'll pick myself.
A) What is a crackpot?
B) My cynical Public Service Announcement campaign idea to get more people to major in Science and Engineering.
C) Was Jesus a comedian?
D) Guys need a coming-of-age ritual that has some teeth, like exist in other cultures.
E) We need a communications language standard for networked devices, and why this is more of a social/political problem than a technical problem.
F) Control vs. Love: breadth-first, top-down vs. depth-first, bottom up search strategies that work in opposition.
G) Some countries "get" rock 'n' roll better than others.
H) Poetry will become popular again.
I) "Method" acting changed the role of celebrity in all cultural disciplines, starting in the late 1940's.
J) The 6th-8th Century Iconoclast Controversy in Eastern Europe has fantastic dramatic potential.
K) Where there is vice, there is connoisseurship.
L) Laughter and crying serve to carve new cognitive pathways in a hurry.
M) Styles of dress follow people's differing views of human perfectability.

Dan Kaminsky, the computer consultant who found a fundamental vulnerability in the Web's DNS, so fundamental, it could have given him theoretical control over every domain on the Web, will be giving a last-minute talk tonight at HacDC. He'll be talking about this amazing story as well as talking about some current research, to be officially announced on Monday.

[Read MAKE Editor and Publisher Dale Dougherty's review of Daemon on Boing Boing.]
Dan Kaminsky at HacDC TONIGHT at 8 PM!
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When I first got involved in digital electronics, it took me awhile to understand the concepts of pull-up and pull-down resistors and when to use up or down, and when to use internal (built in, programmable) resistors, and when to use actual, discrete component, resistors.
On Youritronics (a name that will always make me wince), new editor Laci runs through a simple demo of pull-up and pull-down resistors, using the ATmega8 protostack.
In digital electronics the engineers use the terms pull-up or pull-down resistor, this is a simple resistor usually between 10k and 100k, to define the input state when no signal source is connected, this way overriding the noise signal, common sense dictates that when you have potentially larger noise then a smaller resistor is needed, but don't be careless about it, don't place a 100Ohm resistor because your signal source must be able to "defeat" the pull-up(down) resistor. A rule of thumb is to use at least 10x larger pull-up(down) resistor then your signal source impedance.
The pull-up term is used when the resistor connects the pin to the + and pull-down when connects to the ground, but then which should you choose? Good question, in these days it doesn't really mater, your application or the pcb design should dictate, the older generation digital IC's had asymmetrical current sink/source capability, they could sink more current and because of that the pull-up resistor was more common.
ATmega8 protostack simple demo
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Hey look, here's a bank that's not afraid to loan. Fascinating idea. Wonder if it'll work?
From: Why does Open Source Hardware need a bank?
Right now, the status quo, emerging trend for OSHW DIY'ers has been: build something, put up a bunch of money to build a few of them, if people like it, scale it up, raise money, realize you might lose all that money, charge a margin on top of it to cover your potential losses, start a small company to resell more, cross your fingers, maybe get lucky or maybe not. Setting up each little company takes an infrastructure investment like incorporation legal fees, Paypal transaction costs, and website hosting fees to name a few. For every small hardware project, there's a potential to have to pay upwards of 40-50% of the initial cost of the project again in just infrastructure fees - that's prohibitive and ridiculous for little guys like me.
From: The Solution: how the Bank will work
The Open Source Hardware Bank will work to eliminate the scaling and quantity pricing problem for OSHW projects by funding the build of 2x the quantity of any Open Source Hardware product. That means, if a project has found a way to find 10 potential buyers, the bank will put down the money needed to fund 10 more, for a total of 20 products. If a project has found 25 community members to buy in, the bank will fund another 25, to bring the total quantity down to 50. This should reduce the unit costs by around 10-30% of any hardware project, and in the case of the Illuminato, it'll reduce costs by almost 40%!In return, anyone who pitches in money to the bank will get a modest and sustainable return on their investment, somewhere between 5-10%. Normally, this wouldn't be a huge amount, but given what I've learned about the "real" economy recently, 30-50% return on investment may never have really existed in the first place, let alone represented "sustainable growth." This money gets paid back and cashed out when the rest of the inventory is bought as a check that Justin, Andrew, or I write and sign personally.
[Sent in to us by MAKE subscriber Robert Boerner. Thanks, Robert!]
Introducing the Open Source Hardware Central Bank
According to Cool Tools, the best source for Neodymium Iron Boron (NIB) super magnets is "Mr. George the SuperMagnetMan." He's a charming fellow, wont to saying things like, "These magnets have caused more blood blisters than any other magnet I have."
His prices are the best on the net. His selection is vast: no one else has the stock he has or the variations in size of commonly available shapes. This is no exaggeration or hype. He's got stuff you can't get anywhere else and is constantly adding new items, like axially- and diametrically-magnetized NIB wedding rings and radially-magnetized ring magnets. He has magnets so large they are dangerous (fortunately he has put videos on YouTube that show you how to safely handle these monsters -- with large leather welding gloves and a special wooden wedge and a 2x4!). He also sells magnetic hooks, pyramid shaped magnets, magnetic jewelry, teflon coated magnets, heart, star, and triangle magnets. You can even get powdered magnets that act like iron filings on steroids! You name it he's got it. Most magnets are N45-N50 grade, the highest strength you can buy.
BB pal and former guestblogger Bruce Stewart sent along this slippery little geometry brain teaser. Click the image to see it larger.
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* The books describe, for example, a case of a woman who had been experiencing vaginal bleeding for several months, but which failed to respond to conventional treatments. After direct observation, the patient was found to have a live leech in the vagina [after removal of the leech, the doctor recommended her to use an underwear or a cork stopper when going to the river for a bathe]. Leech died of starvation after removal.A Treatise on Foreign Bodies in Surgical Practice (Thanks, Michael-Anne Rauback!)
* There are other cases in which spoons, cups, needles, glass bottles, hair brushes, avocado pits, beans, snails, or a variety of insects, arachnids, or fish were removed from different orifices of the human body.
At breakfast this morning, Berkeley friend and former journalist John Feld said we need journalists to do impartial investigations into government corruption. I asked if he knew of any and he said Seymour Hersh. I agreed.
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I remember, the first time I saw a bee box (or bee lining box), I was fascinated by all of its chambers (this one has two, others have three), lifts, sliding doors, windows, etc. It's like something a magician might flourish onstage. But it's not. It's used for hunting and capturing wild bees and using the captured ones to follow them back to the hive (a lost art called "bee lining").
More info on bee lining in general can be found here.
[Thanks to MAKE subscriber, and bee liner, Rick of 2wicky, for sending us his video.]
More:
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This is beautiful! I think it is from Indonesia. From the eBay listing:
I saw this at the flea market and it was drawing so much attention, I knew I should buy it before it got snapped up. The hand tooling on this thing is amazing. It is covered with fancy designs and also heavy equipment, including a bulldozer, road grader, dump truck, and crane. There is a large eagle on the front over the nameplate, which reads "C.L. Aldrich". On the back is a nameplate which reads "Atlas". The condition is excellent, though it could use a little cleaning. The liner is in good condition as well. This is a standard McDonald Mine safety Appliance Co. hardhat that has been laboriously hand tooled into a one of a kind work of art. On top it is inscribed Kota Gede Yogya with the initials NR. Kota Gede/Yogya is a region in Indonesia widely recognized for it's fine silver craftsmen. The initials NR are probbably those of the artist.More pics here: Hand-tooled aluminum hard hat
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"If Mirrors Could Speak" is a super creepy educational film from 1976 in which misbehaving kids are presented in clown make-up.
In hopes of keeping kids' attention, social engineering films would often use supernatural elements to make their points. In this film, we see a magic talking mirror that reflects bratty kids as clowns. Most of the misbehaving kids understand how their behavior is disruptive and make amends. Surprisingly, one kid doesnt care if he is a "clown" and continues being a jerk probably for the rest of his life.This film is included in archive.org's stupendous "A/V Geeks Film Archive"

Hey there Boingdom -- I'm en route to Cotonou, Benin as I type this, and will be meandering around several countries in West Africa for a few weeks. I hope to capture some special things to share with you. In my not-very-connected absence, my Boing Boing Video colleagues Jolon Bankey, Derek Bledsoe, and Wesly Varghese will keep our daily original video programming rockin', and we're planning some super rad new stuff for later in the month, together with all the Boingers. More on that soon, in another post. Producer Derek Bledsoe will be blogging each day's BBV episode while I'm on the road, and today's ep is a very interesting feature about Darfur. Hope you enjoy all they're going to publish while I'm traveling, and if you have any recommendations, questions, or thoughts to share on what I ought to be paying attention to (or pointing camera/microphone at) in the region where I'll be, please share in the comments!
Above, a snapshot I took of the door at the Temple of Pythons, in Ouidah, Benin, back in 2007. Ouidah is the spiritual heart of Benin, and is considered an important historical center of Voudun ("voodoo") tradition.
Remember the Groove Armada "Download MP3s from their new EP via Bacardi and maybe win an iPod Touch courtesy of Boing Boing Video" contest? We now have a winner. BB commenter NiCaprio, whose followers on the bliveshare site can be seen here. Thanks for participating, everyone, and NiCaprio -- we'll send the prize to you soon!
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Carlo Longino is an expert at the Insight Community. To get insight and analysis from Carlo Longino and other experts on challenges your company faces, click here.
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Leica has announced it is discontinuing its R-Series manual focus SLR. In a letter sent to dealers, the company said the R9 and R-series lenses would no longer be produced. The camera, which was compatible with Leica's DMR digital back, still featured on the company's stand at PMA in Las Vegas, despite the move. The company said that insights gained during the development of the S2 (its first autofocus camera), will feed into the development of a future generation of the R-system. Comments Off [link]
The SolarSpeeder Kit from the Maker Shed is a really fun kit to make and race. The kit comes with detailed instructions, and is easy enough for even a beginner to assemble. I really like the contoured circuit board with it's cool looking gold flames. It really was amazing how fast this little solar racer ran across the floor after less than a minute of charging. Next I have to try out some of the upgrades. I'll keep you updated.
The SolarSpeeder was designed using ideas gathered from many years of Solaroller racing at the BEAM Robot games. You only need a soldering iron and basic hand tools to turn this high-quality coreless DC motor, lightweight body, and tweaked electronics to build your solar speed-demon.The SolarSpeeder can cover 3 meters (10 feet) in less than 40 seconds in direct sunlight. Simple to construct and a great project for beginners!
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In the Maker Shed:
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More about the Solarspeeder Kit
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URBAN CAMOUFLAGE (Thanks, Marilyn!)
I was an early reader of the book in draft and was very impressed -- this is good, insightful scholarship.Peter Cowhey (UCSD and now the Senior Counselor at USTR) and Jonathan Aronson (USC) have a new book out from MIT Press. It can be downloaded under a Creative Commons license.
Transforming Global Information and Communication Markets: The Political Economy of Innovation explains why global information and communication markets matter, why change is needed, and what should be done.
Transforming Global Information and Communication Markets
(Thanks, Jonathan!)
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For MAKE magazine readers, this weekend's episode of Make: television may look and sound a little familiar. But the allure of a project that's accessible, classic, and cool was too great... so we decided to devote the Maker Workshop segment to the Cigar Box Guitar, originally featured in MAKE magazine, Volume 04. Of course what would a Cigar Box Guitar feature be without the king of the craft (and original author of the article) himself, Ed Vogel?
Did we mention he brought along a band, complete with Display Case Bass and Canjo?
Check out the Maker Workshop this Saturday, March 7, to see more of the Cigar Box Guitar and the first-ever jam session on Make: television.
Also, read the original Cigar Box Guitar article from MAKE magazine, and watch some of Ed Vogel's Cigar Box Guitar videos.
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Windell Oskay of EMSL found this 12-inch seven segment display on his trip to electronics megacity of Shenzhen, China, and he started hacking a controller for it right there in the hotel room:
Read more | Permalink | Comments | Read more articles in Electronics | Digg this!As part of the China trip last week, we had a little scavenger hunt, where the challenge was to build something with parts and tools acquired at the electronics markets.
Here's what I found: a single-digit seven-segment LED display with twelve inch digit height. (Whoa!)
When I came across this display, it was in the display case of a vendor at the SEG electronic market-- it was too tall for the display area so they had to put it in sideways, next to the 8" displays. (It's the one with the green protective film.)
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Mike posted this hypnotic video of a 5-axis industrial CNC machine carving a prototype car form and applying/smoothing the epoxy shell. Even after understanding how it works, it's still quite a fascinating process to take in. [via Hacked Gadgets]
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Jake von Slatt sent us a link to this nifty "legendary" automotive tip for removing old bearing races from an aluminum axle hub. There's no way of knocking or prying them out. But if you weld a bead around the inside of the race, when the weld cools, it'll shrink enough that it'll come away from the hub, so that you can install new bearings. Cool! I guess this technique would work in other situations where shrinking a metal part would free it from a housing.
A neat trick for removing bearing races
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From the MAKE Flickr pool
Flickr member Model Army did some testing with a stereolithography machine and posted the elegant results.
For those unfamiliar with the process - stereolithography uses UV lasers to solidify a photosensitive resin, printing objects one layer at a time from a vat of the liquid -

Learn more about the process on Wikipedia.
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Yet another vibrobot design, this one made out of a metal jar lid, motor, switch, and battery.
Killer Jar Lid Robot is Coming For You!
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Mekonik used an Arduino board, solenoid coil, hall effect sensor, and some clever coding to hold a permanent magnet in mid-air -
The device uses a small Hall effect sensor (SS19 from Honeywell, available for $0.50 from AllElectronics) to sense the field of the permanent magnet and uses that information to modulate the magnetic field of the electromagnet. Since the sensor is on the electromagnet,As you can see, it's currently a magnetic pull instead of the familiar push levitation - but research continues. In order to get feedback/response to the sensor fast enough, he made some key changes to the Arduino IDE's serial library. More info plus discussion in the comments of the relevant project's blog entry. Read more | Permalink | Comments | Read more articles in Arduino | Digg this!the reading on it is the sum of the fields of the floating magnet as well as the electromagnet. The greatest challenge was separating these two and getting the floating magnet's field only. After some theoretical research into inductors and the Amper's law and experimentation, I achieved pretty good stability of a hovering magnet or a magnetic dart or whatever. The result is not completely perfect, some small oscillations are still noticeable. I think that I achieved the limitations given by the Arduino A/D converter.


The Cheap Vegetable Gardner created this soil moisture sensor using nothing more than picture wall hanging hooks, a soda straw, hot glue, and some Plaster of Paris.
After a little research there was the classic science class method of creating a homemade sensor by simply putting two galvanized nails in the soil and measuring the resistance between them. A major problem with this solution is the soil composition can significantly vary the resistance and keeping the spacing between the nails could be troublesome.
After a little more research I came across the method that has been working well for over 50 years. This method includes taking two metal probes and inserting them into a gypsum block and measure the resistance between them. The gypsum absorbs the water and provides a decent range of resistance and moisture measurement.Unfortunately I was fresh out of gypsum, so I looked around the garage and found a good substitute, Plaster of Paris...
How to make a cheap soil moisture sensor

Paul Lamere, of the Music Machinery blog, has a most excellent post investigating the detectability of drummers who use a click track:
I've always been curious about which drummers use a click track and which don't, so I thought it might be fun to try to build a click track detector using the Echo Nest remix SDK ( remix is a Python library that allows you to analyze and manipulate music). In my first attempt, I used remix to analyze a track and then I just printed out the duration of each beat in a song and used gnuplot to plot the data. The results weren't so good - the plot was rather noisy. It turns out there's quite a bit of variation from beat to beat. In my second attempt I averaged the beat durations over a short window, and the resulting plot was quite good.
From the post are these two graphs showing the tempo deviation of Green Day's American Idiot and Enter Sandman by Metallica. Can you guess which band uses a click track?
Paul has posted the necessary Python code and a link to the Echo Nest API, for those of you who are now curious about your own music collection.
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Carlo Longino is an expert at the Insight Community. To get insight and analysis from Carlo Longino and other experts on challenges your company faces, click here.
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This Friday, at 12pm Pacific (3pm ET), MAKE is launching a new Blog Talk Radio show, called Make: Talk, hosted by MAKE Editor and Publisher, Dale Dougherty, and MAKE Editor-in-Chief Mark Frauenfelder. Each week, they'll have special guest makers on the show, talk about DIY projects, and what's going on at MAKE magazine and Make: Online. They'll also be taking calls and your questions live.
For this first show, Friday March 6, 2009, they'll be discussing Volume 17, the Lost Knowledge issue, of MAKE. I will be the guest, along with Jake von Slatt, the cover gentleman for the issue and creator of the wonderful Wimshurst project featured in 17. We'll be talking about steampunk, and other lost, retro, antique technologies, and whatever else springs to mind.
If you want to join in on the fun, give us a call at (646) 915-8698, between 12-12:30 PT, 3-3:30 ET, on Friday. And you can listen to the show via the widget below.
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From MAKE magazine:
Check out MAKE, Volume 17: The Lost Knowledge issue!

In Volume 17, MAKE goes really old school with the Lost Knowledge issue, featuring projects and articles covering the steampunk scene -- makers creating their own alternative Victorian world through modified computers, phones, cars, costumes, and other fantastic creations. Projects include an elegant Wimshurst Influence Machine (an electrostatic generator built entirely from Home Depot parts), a Florence Siphon coffee brewer, and a teacup-powered Stirling engine. This special section also covers watchmaking, letterpress printing, the early multimedia art of William Blake, and other wondrous and lost (or fading) pre-20th-century technologies.
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Check out Rhizome's article about 3D printing (fabbing) and digital art, with plenty of links and pictures of inspiring works from artists around the world.
Several years ago, while making the lecture circuit rounds, American architect William Massie described a key goal within his practice as moving towards a more direct translation between bits and atoms. Architecture has always thrived on the tension between representation and material assemblages and what he was addressing with this comment was the dawning of an era characterized by a new proximity between digital models and physical output. In selected contexts, artists, architects, and designers have been exploring these accelerated development cycles for a decade but the involved technologies are descending in price so quickly that, for example, 3D printers are now cheaper than laser printers were in 1985. A key question: how does the looming ubiquity of these tools and workflows apply to the production and display of new media art? This article will explore digital fabrication (aka fabbing) at a variety of scales which include the curatorial questions raised by these new hybrid industrial design/sculpture objects as well as the implications on the practice of individual artists.Read more | Permalink | Comments | Read more articles in Arts | Digg this!
The Yelp Tee: Almost More Brilliant Than Pizzeria Delfina's Pizza (via Consumerist)Instead of simply bitching about Yelp, they've made Yelp their bitch and taken quotes from one-star reviews posted on Yelp about the pizzeria and made them into T-shirts for their staff to wear. (They also have one that simply says, "This place sucks," a quote from yet another typically eloquent and insightful Yelp review.)
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I tried to listen to Sunday's Face The Nation podcast, an interview with Rahm Emanuel, but I couldn't stand it. I've really gotten out of the habit, and now with fresh ears I know exactly what's wrong. I want the interviews to be grounded in the reality that we, the people, live -- not the make-believe logic that governs the ruling class in DC. Schieffer kept asking questions Republicans would ask to try to make trouble, but I understood they were based on an unstated and unproved premise that earmarks are inherently evil. Emanuel was answering the questions directly -- yes we will have earmarks. Schieffer kept playing the gotcha game, but it was stupid, Emanuel had conceded the point! OMG.

With Tahoe having received a whopping near 4 feet of snow in the last 24 hours (!!!), my mind can't help but to drift to Makers we've profiled in the magazine who are snow enthusiasts.
In MAKE Volume 10, we featured the folks behind skibuilders.com: Kam K. Leang (Big Kam), Kelvin Wu, and Kam S. Leang (Little Kam). These 3 friends, all avid telemark skiers, are on a mission to show that building a pair of skis (or a snowboard) is not as hard as it sounds, especially if you're the average garage tinkerer with basic woodworking skills. Pictured above are a row of their handmade skis. Their site features a great how-to section, including the Intro to Ski Building overview video, and detailed instructions on building the equipment you need: a ski press, core profiler, and edge bender. This is definitely an open source project, folks, as these gentlemen are generous with all their combined knowledge. From the article, here is a picture of Wu's pneumatic ski press:

And the makers with some fresh skis hot off the press:

Taking it to the next level of DIY skiing is maker Troy Caldwell, who we featured in MAKE Volume 08. In 1990, Caldwell got a sweet deal on 400 acres near Lake Tahoe, between the Alpine Meadows and Squaw Valley ski areas. (He actually owns about 70 acres of Squaw, including KT-22, which the ski area leases from him.) A former member of the U.S. Ski Team, Caldwell is a maker with the dream of building his own private ski facility. As a matter of fact, he welded all the towers for his handmade ski lift in his own garage, with the help of a series of pulleys and hoists to move the heavy pieces. From the article, here he is in his garage, next to his snow cat:

He placed the towers on the mountain over a two-week period with the help of a helicopter and 30 volunteers:

A lawsuit filed by Squaw Valley had put this makers dream on hold. SF Gate reported on his progress last year. We'll have to check in with Caldwell to see if his awe-inspiring dream has (hopefully) become a reality.
You can pick up back issues of MAKE Volume 10 (the Home Electronics issue) in the Maker Shed. However, MAKE Volume 08 (the Toys and Games issue) is sold out, but if you subscribe, you can have digital access to all 17 scintillating volumes.
Insider Scoop: Look for a DIY Splitboard project coming up in MAKE Volume 19 for all you backcountry riders! (And a DIY Surfboard project for the wave addicts.)
When I mentioned that I had a tool that archives my Twitter posts, and those of people I follow, a fair number of people asked that I release the code. I have done so, the app has a user interface and docs, and if you want to try it out or run it, you're welcome to.
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Check out the Doomsday Sound Kit from the Maker Shed. It's a really cool sound generator based on circuit bending a toy. It's easy to build and a lot of fun to play. I haven't made a video yet, but there is one posted in the Maker Shed.
A noise generator that operates entirely on body resistance. The main circuit board is a left over from a Doomsday Novelty Device which beeps for 5 seconds when a button is pressed. At the heart of a circuit is a Motorola MC14001 U Quad Gate, basically a 4 oscillator circuit to tweak. Various spots on the board have been found to cause nice variations in the resulting sound that the circuit was originally intended to produce. The kit can fit into a very small housing, such as a VHS case, or a Kid's Lunchbox. The included touch contacts create a rugged interface with the board for interesting and expressive sound generation.
The kit comes with everything you need, except a case to house all the components. I used an old plastic case that was headed for the trash. Now it's a really cool instrument.
More about the Doomsday Sound Kit in the Maker Shed
Carlo Longino is an expert at the Insight Community. To get insight and analysis from Carlo Longino and other experts on challenges your company faces, click here.
Jess Hemerly showed me this photo of a delightful alteration of an emergency hammer box. I asked her where she got the image and she just said, "the Internet."
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