MAKE Primer – Electronic test equipment

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Electronic Test Equipment by Tom and Wendell Anderson. See and understand what’s happening inside a circuit. Page 158 – MAKE 10. Read this article now in the MAKE digital edition.

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Or get MAKE 10 from the Maker store and/or subscribe to MAKE (use code CMAKE for $5 off USD).

You can view all our in depth Primers from MAKE here too.

Single character commenting

It’s a pretty common practice to comment and uncomment big chunks of code during the development and testing of software. Here’s an odd little hack from the ajaxian blog that can make this a little easier for blocks that you’re constantly flipping on and off during development.

For C style comments, the following will be commented out:

/*
if ( foo == bar )
{
  dosomething();
  return();
}
// */

And the addition of a single ‘/’ will uncomment the block:

//*
if ( foo == bar )
{
  dosomething();
  return();
}
// */

In languages that don’t have the single line comment, such as CSS, you can do the same thing with only the block level comments.
Commented:

/*/
min-height:100px;
/**/

Uncommented:

/**/
min-height:100px;
/**/

You are probably talking to your screen right now, saying, “hey Jason, that commenting trick is marginally useful at best.” I can only respond by reminding you that every keystroke is a beautiful and unique snowflake that must be cherished and never wasted.

A neat commenting trick – Link

“Made in Japan” Interview: Masayuki Akamatsu

Makers from Japan: An Interview with Masayuki Akamatsu

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Masayuki Akamatsu has taught sound/media arts at IAMAS (International Academy of Media Arts and Sciences/Institute of Advanced Media Arts and Sciences, Gifu, Japan) since 1997. He has exhibited multimedia electronic installations and performed throughout the world, and is also a member of The Breadboard Band, a group that performs electronic music made from circuits on solderless breadboards. His numerous installations incorporate sound, visual manipulations, and many other forms of mixed media. He has written several books on the Max/MSP/Jitter sound/visual processing program, and he has also written quite a few of his own objects for use with Max/MSP/Jitter. His software creations incorporate unconventional applications for interfacing existing hardware functions in unexpected ways (for example, using the Sudden Motion Sensor on a PowerBook as a way to control parameters in Max, interfacing the Wii Remote and iPhone with Max, etc.). Lately his work has focused on writing software applications that exploit the possibilities of the iPhone, a device that he sees as being an important step in the evolution of computing. In Made in Japan Vol. 1 we showcased his ever-growing collection of iPhone apps, and this week Mr. Akamatsu was gracious enough to agree to an interview, so the following interview was conducted via email and translated from Japanese.
A little bit about your history, I noticed on your resume that after graduating from college you worked for quite a while with the Kobe City government. How did you start experimenting with using technology to create music? Do you play any “normal” instruments?

Ever since high school I had been using tape recorders and early synthesizers to make electronic music. But that was mostly just for fun, I never thought of being a professional musician. After that, I bought a computer in college and started programming, and making music that probably wouldn’t be considered “music” in the traditional sense. I have a piano and a guitar right here in front of me, but I’ve never performed with them. I hate practicing, so I probably won’t ever really be able to play them in the future, as I believe that physical ability is essential, and that is becoming more and more apparent.

How did The Breadboard Band come about? What is exciting to you about making sound in this way? Although most of your formal work seems to involve software manipulation of consumer devices, do you have a background in electronics and making hardware?

At IAMAS (International Academy of Media Arts and Sciences/Institute of Advanced Media Arts and Sciences, Gifu, Japan) where I teach, there is a project underway called PDP (Programmable Device Project), and it was through that that The Breadboard Band was born. I am not personally very knowledgeable about hardware, I just kind of explore interesting phenomena by groping around with my hands while destroying a few circuits. The other members are more knowledgeable about electrical circuit design and construction, so I sometimes have them make things for me. One objective of this band is to break through the limits of commercial music hardware. In terms of electrical engineering, it’s usually a pretty disastrous affair, but you can’t achieve the appeal of primitive, violent music in any other way.

Many of your current projects are for the iPhone. What interests you about the iPhone as a development platform? Will the iPhone ever become usable in Japan? Doesn’t Japan have more advanced cell phones already?

The computer era is almost over. Or at least desktop-style and laptop-style computers will no longer be used by ordinary people. As a final expression (or application) of this, devices such as the iPhone will become mainstream. (The future) will be a world of wearable computing and ubiquitous computing.

The appeal of the iPhone to me is that it presents a unified global view, there is no “waste” (the elimination of “waste” or muda is a national obsession in Japan) in its hardware design, and that its applications are sophisticated.

The cell phones in Japan have a lot of features, but there’s so much unnecessary and wasteful hardware packed into them, and the software is like a labyrinth nightmare. The GUIs are purely decorative, there’s no meaningfulness or unity, and nobody can really use them. It’s clear that in terms of evolution they are at a dead end, and it’s widely known that they have no competitive power at the international level. If the iPhone doesn’t sell well in Japan amidst these conditions, I don’t think there’s much future for Japan. I really hope that the communications carriers here in Japan don’t do anything stupid. When the iPhone goes on sale here in Japan, I would like for it to at least have the same level of functionality and a similar pricing plan as it does in the United States, but I’m worried about restrictions and restraints from the communications carriers here in Japan. It may seem unbelievable, but there have been cases of this in the past.

You have done some of your interactive installations using the Gainer interface from Japan. As you may be aware, the Arduino device is very popular here in the United States and in Europe. Both devices have a similar purpose and seem to be guided by similar philosophies (open source, designed to be simple enough to be used by artists, musicians who don’t have an extensive background in electronics). Can you comment on the differences between using Gainer and using Arduino? What do you look for in a these sorts of interfaces?

Just like The Breadboard Band, Gainer came out as the result of PDP research activities here at IAMAS. Gainer is relatively simple and consideration has been taken so that it can be easy for beginners to use, and that it can be interfaced with Max/MSP, Processing, and Flash. That might be a result of the Japanese sense of attentiveness (or “delicate consideration”). I only have experience using the Arduino interface on a trial basis, but its small size and Bluetooth-capable variations are certainly appealing.

(In terms of what I look for in an interface) on one hand, the difficult thing with any interface is that when you use any sensor or motor for the first time, you have to design the peripheral circuits yourself. This might be as simple as adding a resistor, but if there is some kind of solution that is required to get to the final step, then I think that this tries the user’s patience . Also, for physical interfaces I would like to see a more solid development environment, not so much in terms of the interface, but in terms of making things work as standalone devices.

Japan is of course a very technologically advanced country, but what can you say about Japanese people’s relationship with their electronic products? Do they think of them as disposable products? Of course not everyone will try to hack their cell phones, but do you see a growing population in Japan that is interested in proactively hacking and messing with their stuff?

This depends on the generation, but I think that in particular young people in Japan for most part think of electronic devices as being disposable. The pace of consumption and greed is pretty astonishing, and they probably aren’t even aware of it consciously. However, there is no shortage of the sort of “maniac” people who embody the representation of “otaku” culture in Japan. When you consider that here in Japan we live in an environment where we have electronics parts specialty stores in places like Akihabara and craft-oriented department stores like Tokyu Hands that are available close by, then yes, I think you could say that this type of environment is unique to Japan. In that sense, Japan could be considered a paradise for creativity and hacking.

You have written quite a few objects for Max/MSP, the most notable being your object that interfaces the Wii Remote with Max/MSP. The Wii Remote has been used widely as a controller for many things other than the Wii, and has been widely heralded as a “breakthrough device” in terms of its hackability. Do you think that there will be more products coming out that can be used for things other than their specifically intended purposes? Do you think that the success of the Wii Remote will lead to a change in design tendencies (i.e. adding functionality that can be used for different purposes, or like products such as Roomba or Robosapien, in which the companies that produce them have encouraged hacking)?

First off, with the iPhone, Wii, Roomba, etc., I think it’s important to note that these products are well-made in the first place. If it’s a good product, then the product also has an advantage in that it can be made cheaply through the efficiency of high-volume mass production. In the case of the Wii Remote, in addition to having a lot of features, its price was such that people felt free to try it out, and as a result it was widely noticed by a lot of people. Conversely, gadgets that from the onset have been open source and hackable have not been as big of a success as the Wii Remote. The sole fact that something is “open” is not what’s important, there has to be some kind of attraction that makes a thing worth hacking in the first place.

As the number of features in home appliances increases, usability is steadily getting worse. Even though only 10% of all the functions actually get used, it’s usually the case that they don’t do anything even a little bit different. No matter how much they are improved, the functions and user interfaces that the engineers and designers for these companies come up with cannot necessarily meet everyone’s desires. Because of that, I would like to see companies concentrating on the devices themselves and their original purposes, and to prioritize ease-of-use. Also, I think it would be wonderful if open communication protocols and APIs were maintained for the purpose of adding functionality. That sort of depth should be desired in today’s products. Of course, the Wii and the iPhone’s success is related to the fact that they achieved this depth. This may just be my own little delusion, but I think that Apple and Nintendo may well have intentionally “opened the back door” to these products.

I know that you have a written several books on Max/MSP and that you are quite knowledgeable with it, but what do you think of PureData (the open source “cousin” of Max/MSP)? The UI of PD is of course more primitive than that of Max, but have you ever had the chance to use it?

The Breadboard Band has used the iPod Linux port of PureData for performances. Because PureData is open source and portable, it’s quite suitable for that type of purpose. However, because Max/MSP is overwhelmingly better in terms of function, extendability, etc., I don’t think I would ever use PureData, if it’s something that I can already do in Max/MSP.

What are your feelings about the upcoming release of Max/MSP version 5? It seems like it will be much easier to design better-looking user interfaces, but aside from that, are there any particular new functions that you are interested in?

Based on looking at the preview movies that have been released, I don’t think that the pastel-style graphic design is any better. I think that Cycling ’74 needs to put more effort into that area. In one regard, I am hoping that it becomes more complete as a programming language (for example, the full-scale implementation of attributes in Max, being able to easily use the Attribute Editor, etc.). I would like to see a fast infrastructure that can respond to higher-level requests while still maintaining the characteristic of being easy for beginners to use. I am also interested in seeing how things like time processing and the debugging function will be handled. Also, Max5 will be Unicode-compatible, so it should be able to handle Japanese and other languages without any trouble. You might not believe it, but here in Japan we have only been able to use our own language in a pretty limited capacity with previous versions of Max.

There you have it, the words of a Japanese hacker and visionary creative force. We look forward to seeing what Mr. Akamatsu comes up with in the future, with The Breadboard Band, with his Max/MSP work, with his installations and performances, and with his pursuits in unleashing the potential of the iPhone. Thanks for the interview!

-MD

Hacking VGA with Arduino

Cool visualization on a monitor via Arduino

An arduino board is controlling the RGB lines of a VGA connection to an LCD monitor. However, the horizontal and vertical sync lines are being generated by a proper computer.

– Code and info on Little-Scale – Link

Related:

Arduino TV – Link

In the Maker store:

“Critter & Guitari” Cellular Automata Video Synthesizer Kit – Link

Robotic dream playback

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“Sleep Waking” by Fernando Orellana and Brendan Burns presents a new way to look back on one’s dreams. EEG, EKG, REM, and various other physical data is logged during the subject’s sleep and then later used as the script to direct robotic action -

The eye position data we simply apply to the position the robot’s heads is looking. So if my eye was looking left, the robot looks left.
The use of the EEG data is a bit more complex. Running it through a machine learning algorithm, we identified several patterns from a sample of the data set (both REM and non-REM events). We then associated preprogrammed robot behaviors to these patterns. Using the patterns like filters, we process the entire data set, letting the robot act out each behavior as each pattern surfaces in the signal. Periods of high activity (REM) where associated with dynamic behaviors (flying, scared, etc.) and low activity with more subtle ones (gesturing, looking around, etc.). The “behaviors” the robot demonstrates are some of the actions I might do (along with everyone else) in a dream.

What? No electric sheep? – Link

Speaker cans

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An anonymous reader sent us a link to these neat speakers made from used cans. Oddly enough they convey a rather chic sense of style. The instructions are written in german – but you can pretty much infer the necessary steps from the supplied images. I’m guessing they may sound a bit “tinny”? – Link

Related:
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Fold-Up Speakers – Link.

From the pages of MAKE:
Make Pt0258
Make – Volume 12 – Styrofoam Plate Speaker (DIY: Music) (Page 131) – Link.

Make SMT probe Tweezers

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Here is how to make some nice little tweezers from recycled circuit boards. You can even wire them up to your multimeter and check the resistance of your components. This would have been a popular tool at the last MAKE:NYC meeting.

Ever since I started salvaging SMT components, I thought it’d be great to have a pair of tweezers wired as meter probes — grab the component, pick it up to put away, and check its value all at the same time. There actually are such things available, but the ones I’ve found start at $35 with a custom connector for that manufacturer’s meter. Not much to my liking.

Make SMT probe Tweezers – link

Made in Japan Vol. 3

MADE in Japan – Volume 3
This week: “Life Sensing” Hot Water Pots, Circuitbent Pachinko Machines, Otona no Kagaku: a “Science for Adults” magazine that comes with a toy, Maywa Denki, Make Your Own Soba, that Famicom Guitar, Funny Wall-mount PC, and an iPod/Boombox Mashup.

ipot.jpgMaking Sure Elderlies are Still Alive by Wirelessly Tracking Their Hot Water Pot Usage -
Remember all that talk about how the wireless revolution was going to let average appliances like toasters and blenders communicate with a central system? Just like the promise of floating skateboards, I’m still waiting for this one to become a reality. But wouldn’t you know it, they’ve done it in Japan, with a hot water dispenser. So what is this hot water dispenser saying? “Don’t worry. Grandma is still alive.” Zojirushi, maker of fine fuzzy logic rice cookers and other smart appliances, has come out with a service called Mimamori that is designed to help the urban, tech-savvy generation of Japanese make sure their elderly relatives (many of whom live in rural locales) are safely going about their daily business by tracking their hot water usage through a surreptitiously-placed hot water dispenser called the i-Pot that wirelessly transmits data via a cellular data network to a web server which in turn sends updates to their concerned relatives.

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(“Know your parent’s health with the i-Pot”)

In Japan, using a hot water dispenser is considered to be so universal and commonplace that the failure of an elderly person to turn on the hot water dispenser in the morning or to turn it off at night warrants a legitimate cause for worry. Is grandma ok? This service will send two updates per day to up to three separate email addresses giving usage data on the Zojirushi i-Pot hot water heater (yes, it is called the i-Pot, and yes, it sounds a lot like “iPod” in Japanese too). These status updates are available via email or a web service that will even graph your loved ones’ appliance use, telling you when they turned the heater on, when they pumped water out of it, allowing concerned relatives to track trends in grandma or grandpa’s hot water drinking habits.

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(“It got turned on especially early this morning, huh.”)

The i-Pot transmits its information through DoCoMo’s DoPa wireless packet communication service which is then submitted to a specialized server where status emails are sent out and usage can be tracked via a custom homepage for service subscribers. It costs 5,250 yen (49 USD) for initial registration with the service, plus another 3,150 yen (29 USD) per month. But…the cost of not having to call grandma every day to make sure she’s still alive: Priceless. Right?

The device is made to look like a regular hot water dispenser, and the product literature shows that the transmitting device is stealthily hidden within the appliance. Although it is never explicitly stated, I assume that you’re supposed to give this to grandma or grandpa without telling them about its tracking abilities. This immediately made me dream up slapstick scenarios in which an elderly person is perfectly happy with their current hot water pot and refuses the gift from their young relatives. Maybe grandma unplugs the i-Pot and starts using her old trusty water heater after they leave, causing her relatives to send in the EMT squad, Seinfeld-esque disaster/hilarity ensues…

What is really unique about this appliance is that it tracking capability will work virtually anywhere in Japan where there is cell phone service. But this got my maker mind thinking, if you were to design a similar device for use, say, in the United States, what appliance would you track the usage of and how would you wirelessly track its use? What do elderly people in the Western world do every day? Turn on the TV? Open the fridge? Would a US device have to use a cellular data network as well? (some grandpas don’t got no WiFi…) Anyone have any sweet ideas? I’m sure there’s a maker out there who can figure something out. Will some Arduino/wireless genius prototype it this week? Make me proud.

Via Trends in Japan and Mimamori.

Circuit Bending Pachinko Machines -
Pachinko is somewhat of an obsession for many in Japan, and the craze for new pachinko machines in pachinko parlors leads to a very constant turnover of new machines coming in and old machines going out, making them them a prime candidate for “artistic repurposing” projects such as circuit bending. Pachinko machines are part pinball, part video slot machines, and part music makers, and as anyone who has stepped foot in a pachinko parlor can attest, these machines are LOUD and good at making noise to begin with. YouTube user DevgonAsh has taken to circuit bending outdated pachinko machines, tweaking everything from their sounds, their video screens, to their mechanical motors and solenoids and linking them up various controllers, matrices, and even regular old spoons.

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Otona no Kagaku -
Translated as “Science for Adults,” Otona no Kagaku is a lavish science mook (ya know, magazine/book) published by Gakken that is bundled with a “supplement” (the adult nerd equivalent of a cool Happy Meal toy) bonus that corresponds to the theme for every issue. For example, Vol. 17 came with a mini Theremin kit (pictured below) and that issue documented the strange history and science behind this instrument.

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As if publishing a sweet magazine wasn’t enough, Gakken also has quite a few DIY kits that they sell in Japan, including several educational electronics blocks, traditional Japanese puppet kits, engineering kits including the Crab, Centipede, and Inchworm, as well as the Sterling Engine and Vacuum Engine kits, a tube amplifier kit, a radio kit, and a gramaphone that writes on a variety of different materials, including old CDs. Volume 18 of Otona no Kagaku comes with a small wind-power generator kit to power an LED, pictured below:

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At 2,300 yen (21.5 USD) per issue, this magazine seems to give quite the bang for the buck (or should I say, yeahs for the yen? Sorry…). The supplement “prizes” for past issues have included items such as a stereo pinhole camera, a mini tea-serving robot, a jet boat, a crystal radio, a Sterling engine, a plankton farming set, and a DaVinci helicopter. They have published English PDF instructions for quite a few of the kits that can be downloaded from the “downloads” section of website (the ones available in English are at the bottom). These kits can be found at a few specialty retailers outside of Japan, but tend to be quite pricey and are frequently out of stock, so let’s hope that maybe there will better distribution of these kits in the future… hint, hint. Despite any difficulty in purchasing the Gakken kits outside of Japan, people seem to be getting them anyway, as evidenced by the online presence of groups like the Gakken Otona No Kagaku Science Kits Flickr pool, etc.

Related:

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Maywa Denki -
Since 1993, the fascinating art project/musical group/electronics company founded by brothers Masamichi and Nobumichi Tosa known as Maywa Denki has used solenoid knockers, relays, and other clever electronics hacks to make musical instruments or “products” that are used in their performances (or “product demonstrations” as they are called in Maywa-speak). In Japanese the name “Maywa Denki” means “Maywa Electric” and sounds like the name of an electronics store, and this is not a coincidence: Maywa Denki is modeled and named after the now-defunct electronics company that was run by the Tosa brothers’ father until 1979. Never lacking in conceptual continuity, the members of Maywa Denki wear blue work uniforms that imitate the outfits worn by electronics store employees. Their products, referred to as “nonsense machines,” are not just used in their performances, but are also a part of the all-encompassing nature of the Maywa Denki vision, as they spread the gospel of Maywa Denki through lectures and workshops on making nonsense machines and other “funny musical instruments.” According to the “Education” section of the Maywa Denki website:

We organize various kinds of lectures and workshops to pass along our “manufacturing” and “method of conceiving ideas.”

Lecture:
Lectures are called “Maywa Denki product demonstrations” in which we make comments on our products and toys humorously as we actually demonstrate using a slide show explaining why they were produced in approximately 80 minutes.

Nonsense Idea Conceiving Workshop:
In this workshop, attendants think about totally useless tools using a “nonsense invention sheet” and actually make them with their hands. At the end, they make a laughter-provoking presentation.

Making Funny Musical Instruments:
We make funny instruments that are full of Maywa-ism with children using the materials which you can get at a 100-yen shop [the equivalent of a dollar store in the US - md]. Ex: Chiwawa Whistle, a whistle which makes the sound of barking dogs.”

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Can you imagine Maywa Denki visiting to give one of their lectures at your school? Nerdgasm, right?

Standing on their own not just as performance devices but as pieces of art, Maywa Denki’s “BITMAN” and “GACHACON” pieces are going to be displayed in the “DESIGN AND THE ELASTIC MIND” exhibition at the MoMA from February 24th to May 12th. This is the kind of conceptual art project/band that really takes a combination of the maker ethic and artistic aesthetics to the next level. One notable example of this is Maywa Denki’s use of a three-tiered pyramid of “product development” where there are prototypes, multiples, and actual marketable products.

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This articulation from prototype to finished product is inspirational to makers everywhere, because it illustrates that experimental tinkering can in fact lead to a finished, marketable “product,” should that be your goal.
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But they aren’t just about selling toys. Maywa Denki’s raison d’être still seems to be performing live, as these pictures illustrate:
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In this wonderful video clip, the BBC’s Adam and Joe visit the Meiwa Denki workshop, and brilliant weirdness promptly ensues:

What I love about this video is that the music he plays at the end is so unabashedly pop, not at all what you might expect from the brain of an artsy inventor/electronics tweaker. Brilliant, weird, artfully crafted, and (as evidenced by the Newton Gun in the video above) very, very funny.

Related:

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How to Make Soba Noodles -
Soba (buckwheat noodles) are a staple of Japanese cuisine. With some buckwheat flour and regular wheat flour on hand, this how-to walks you through making these noodles yourself. Although soba noodles are widely available outside of Japan in its dried form from most Asian markets, there is something to be said for eating freshly-made noodles (for example, being able to snobbily say to your friends “yeah, I make my own soba noodles, they’re better that way…”), and they’re not very hard to make. And just in case you were wondering, the gigantic knife pictured above is not required to make soba noodles, although it certainly might make you feel more authentic.

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The Family Comguitar -

Here’s a very detailed step-by-step overview of how a fellow who goes by the name Mitsumatsu made a guitar that resembles an old Famicom (abbreviation of “Family Computer”) video game system. The headstock is made to look like a controller, and the body is the console, complete with an extra controller holder and a cartridge slot. Making a guitar is in itself no small task, but Mitsumatsu-san has also gone to great lengths to really make this guitar look like a Famicom, and he did pretty much everything with wood, even when it would have been much easier to use plastic. It’s all in Japanese, but there are a lot of pictures every step along the way, so you should be able to get the idea.

Related:

  • A collection Famicom songs played guitar-god style, a la Joe Satriani & friends. Click on the red cartridge to hear the hot licks. Straight shreddin’.

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Funny Wall-Mount Computer Cover-up -
OH HAI. Hide that unsightly computer hardware with a beautiful kitty picture and some other nice stuff! Via Gizmodo Japan.

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iPod Boombox Mashup -
A Japanese hackster by the name of Saito stuck an iPod dock inside a boombox and managed to maintain remote control ability as well as pretty good visibility of the iPod screen. Via Gizmodo Japan.

Well, that’s it for this week. Know of something that might be Made in Japan-worthy? Red rover, red rover, send linkage right over.

Homemade central air

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From the MAKE Flickr pool

Markayak took the matter of cenral air into his own hands -

DIY Central Air: Cold air output of the 2-ton wall unit is piped via duct tape and poly dropcloth to the nearest heat register. Furnace filter was replaced with a plywood panel (not pictured) to prevent backflow. Heating ductwork was used to distribute cool air to the bedrooms.

Aah comfort – the great motivator! – Link

Related:

Homemade air conditioner – Link

The NYC Toy fair 2008 – coverage round up

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We’re pretty happy about our NYC Toy fair 2008 coverage, hundreds of photos and dozens of posts round the clock during the event. Looking around online I think we had the most complete coverage, especially of DIY/Science and learning products. We skipped a lot of awful at the Toy Fair, but we hope showcasing some of the kits, science and engineering centric products helps these companies and parents out there find each other. We also tried to highlight “Made in USA” companies, with all the lead and other contaminants found in imports over the last couple years, being made in the USA is now a desired feature. There were over 20 lead testing companies, it was out of control.

We tried to showcase old-tech meets new tech and the crafty side of the fair – thanks everyone who met us at the fair and toured with us!

To see all the coverage visit our page with all the posts visit here – Link.
To see all the photos @ Flickr visit here – Link.