Make: technology on your time

Spotted in the MAKE Flickr pool:

Flickr user numist had a typerwriter that he wasn't using anymore, so he converted it into a teleprinter. What's that? It turns out that teleprinters are the basically a printer and a keyboard put together in a single device, but not directly connected. Instead, both are connected to a remote computer using a serial connection. When you type on the keyboard, it gets interpreted by the computer, which then prints a response on the printer. They probably don't make much sense anymore, but before electronic displays were readily available, these were one of the main ways of programming mainframe computers.

To make his version, numist took an old electronic typewriter, and added some electronics between the keyboard and printer board. He used an Arduino microcontroller to read in each key press and relay it back over a serial port to his PC. When it receives characters back from the PC, the microcontroller emulates the keyboard to feed them into the original typewriter circuitry, causing the typewriter to print. Now, I'm not entirely sure what one could do with such a modernized typewriter, but I'll bet there are lots of potential projects there. Got any ideas?

Tom Igoe got his hands on a Peppermill circuit board, and took it out for a spin:

Nicolas Villar sent me a sample of the PepperMill, a new sensor board he and Steve Hodges designed at Microsoft Research in Cambridge, UK. It's a nifty little board. You attach a DC motor and the board can an output voltage when the motor is turned, and analog signals telling you the direction and speed of the motor. It turns a DC motor into a rotary encoder, of sorts.

Wiring is very simple. The motor connects to the two spring connectors at the top of the board. Direction and Speed pins connect to two analog inputs on your microcontroller. Ground connects to your microcontroller's ground. The motor generates voltage when you spin it.

Check out Tom's article for circuit diagrams, source code, and information on obtaining a Peppermill board to experiment with. Using PepperMill to turn a motor into a sensor

(Tom is a member of the Arduino team and the author of Making Things Talk).

Making Things Talk
Our Price: $29.99
Programming microcontrollers used to require an expensive development environment costing thousands of dollars and requiring professional electrical engineering expertise. Open-source physical computing platforms with simple i/o boards and development environments have led to new options for hobbyists, hackers, and makers. This book contains a series of projects that teach you what you need to know to get your creations talking to each other, connecting to the web, and forming networks of smart devices.

Kicking off our Maker Business series is this piece by Jeffrey McGrew, who along with his wife Jillian Northrup, and their trusty CNC machine named Frank, are a two-person (and a bot) design and fabrication juggernaut. From their design-build studio in Oakland, CA, they do custom interior design, furniture, and such artist wonders as the "Art Golf" course they've set up at Maker Faire. Here, Jeffrey shares some words of advice to those who may be thinking of going "Maker Pro." -- Gareth

Venturing out...

We get a lot of friends and folks asking us about how we got started. And we know a lot of folks through the Maker Faire that would love to turn "pro." So, I thought I'd jot down the six big things that I see as being key elements to getting started in such a business. I hope they help, and I'd love to hear more from other folks! [Chime in via comments. -Ed.]

1. Get as debt-free as possible, and try your best to stay that way.
We would have never been able to buy the robot (or CNC machine) and make the jump to working for ourselves had we not had our financial lives in order first. Having six months in savings to fall back on, no debt, other than a half-paid off car loan, and not taking on huge debts to get started, made it possible for us to make a lot of mistakes and learn things instead of going out with a quick bang. I've met a fair number of people who want to start their own business, but simply can't, due to this single issue alone. No amount of great business ideas, hard work, or luck can overcome the burden of an unstable foundation on which to the start. Also, honestly, once you get your business going, you'll find that your priorities, and what you think is important, will change greatly. If you're really happy (which running our own business certainly make us), then you'll need less stuff anyways. So, save your pennies, don't worry about getting the latest and greatest, and pay off all those loans and credit cards before you take that leap.

2. Plans are worthless, planning is essential.
That quote from Winston Churchill sums up nicely a lot of what you'll need to do when you start a business. You don't need a perfect plan, with every step already outlined, in giant Gantt charts. But you do need a plan. And you need to be smart enough to change that plan as circumstances change. Running a business is more like sailing a ship than launching a rocket. What I mean is that you need a plan, and to be prepared, but honestly, at some point you'll just point yourself at the horizon and go. And then everything will change, you'll need to change direction, plans, and ideas. You'll re-aim for that spot you wanted to get to constantly as the world around you changes in response to what you're doing. And heck, sometimes you'll find when you're halfway there, you actually want to go somewhere else. So don't fret too much and over-plan everything (and therefore never get started), or freak out when things don't go according to your plans. But at the same time, don't aim for that horizon without one!

For the next few months, in concert with our "Your Desktop Factory" themed issue of MAKE (Volume 21), we're going to be exploring the world of "maker business," turning your passion for making things into a means of making money. We'll look at everything from casual commerce, selling small numbers of goods online, at places like Etsy and the upcoming Makers Market, to the running of a more serious and sustainable small business. We'll be talking to, and have guest articles by, maker businessfolk across this spectrum, from those just starting out, to those who are making a comfortable living as self-employed makers. We'll also be touching on everything from the most philosophical questions of why to the more pragmatic nuts and bolts of how.

Do you run a small "maker business?" If so, we'd love to hear from you. If creating such a business is something you've thought about, what questions/concerns do you have? What would you like to see us cover in this series? Let us know in the comments, or email me (gareth at makezine). We'd love for this series to be a useful service to you, especially if going into such a business is a fantasy, but you have nagging questions or reservations that hold you back, or just need a little encouragement from those who've made this sort of career change work for them.

From MAKE magazine:

MAKE Volume 21 is the Desktop Manufacturing issue, with how-to articles on making three-dimensional parts using inexpensive computer-controlled manufacturing equipment. Both additive (RepRap, CandyFab) and subtractive (Lumenlab Micro CNC) systems are covered. Also in this issue: instructions for making a cigar box guitar, building your own CNC for under $800, running a mini electric bike with a cordless drill, making a magic photo cube, and tons more. If you're a subscriber, you may have your issue in hand already, and can access the Digital Edition. Otherwise, you can pick up MAKE 21 in the Maker Shed or look for it on newsstands near you!

The occasion of Dmitri Mendeleev's birthday seemed like a good opportunity to recognize another great hero of the periodic table and to relate one of my favorite anecdotes about him: Glenn T. Seaborg (Wikipedia), who, among his various stellar achievements, won the 1951 Nobel Prize for "discoveries in the chemistry of the transuranium elements." By the time of his death in 1999, Seaborg had participated in the discovery and isolation of ten superheavy elements. Shortly after the official 1997 recognition of the name seaborgium for element 106, Jeffrey Winters, writing in the January 1998 issue of Discover Magazine, made the following observation:

Not only is Seaborg the first living scientist to have an element named after him, he's also the only person who could receive mail addressed only in elements: Seaborgium, Lawrencium (for the Lawrence Berkeley Laboratory where he still works), Berkelium, Californium, Americium. But don't forget the zip code.

Naming an element after a living scientist generated significant controversy among the international chemistry community of the time. At a talk in 1995, Seaborg himself famously quipped: "There has been some reluctance on the part of the Commission for Nomenclature of Inorganic Chemistry of the International Union of Pure and Applied Chemistry to accept the name because I'm still alive and they can prove it, they say."

I think I could watch this ball-launching sculpture for a long time. Called parabola, it was created by youtube user MechanicalSculptor. I wonder how long it took to design a system that can launch balls with such precision? [via Hacked Gadgets]

Skewer hyperboloid

Thirty two shish kabob skewers and 176 small rubber bands are all it takes to make a beautiful hyperbolid of revolution. This is an example of what is called a "ruled surface," meaning even though it is curved, it is made of straight lines.

Below is the same object seen from the top. Make one of your own following the instructions here, but be careful not to skewer yourself!

More:

• Math Monday: Morton Bradley sculpture
• Math Monday: Tetraxis puzzle
• Math Monday: Giant burr puzzles
• Math Monday: Fractal polyhedra clusters
• Math Monday: Giant SOMA puzzle
• Math Monday: Tie your bagel in a knot!
• Math Monday: Playing card constructions
• Introducing "Math Monday"

French author Jules Verne was born on this day in 1828. His father wanted him to be a lawyer and circumstances forced him to work as a stock broker, but eventually he shook off these humdrum vocations and became the world's first professional science fiction author.

Verne quickly gained a reputation for combining ultramodern technology (of the time) with clever guesswork and an affinity for adventure writing. His most celebrated works are found in a 54-piece canon of science fiction and adventure novels called Les Voyages Extraordinaires.

While most of these stories were rousing adventure yarns, what is most remarkable about them was Verne's ability visualize futuristic devices. He wrote about submarines when the technology was merely a curiosity. In his lost work Paris in the 20th Century he predicted that air conditioning, the Internet, television and electricity would become everyday conveniences. In From the Earth to the Moon he imagined a space program that would launch three astronauts from Florida, who were recovered after an ocean splash-down. In The Steam House he created one of the first visions of mecha,

He did it by imagining the possible, and defining it in terms his contemporaries could understand, a mission many of us undertake when we visualize a new project. And so, Jules Verne, happy birthday!

Bre Pettis made this "first draft" hackerspace map. Suggestions for additions, anyone?

I'm digging this melting table by woodcarver Rob Smith. Beautiful! [via Dude Craft]

Born on this date in 1834 in the small village of Aremzyani, in what was then considered Siberia, Dmitri Ivanovich Mendeleev (Wikipedia) would go on, in 1869, to publish the first periodic table of the chemical elements. Mendeleev used the periodicity he'd observed in the properties of then-known elements to accurately predict many of the properties of germanium, gallium, and scandium, which had not yet been discovered. Mendeleev died in St. Petersburg in 1907, at the age of 72. Element number 101 is named mendelevium in his honor.

The Open Heart kit V2.0 is a matrix of individually addressable LEDs that allow you to create customizable animations when connected to your favorite micro controller. Attach it temporarily to fabrics with headers that you simply push through, or sew it into a project with conductive fabric for a more permanent setup.

One of the great things about being here at Kennedy Space Center for the launch of STS-130 is getting to meet some of the other space enthusiasts who are also here for the launch. The Space Tweep Society has proven to be a great resource for connecting with fellow space geeks (specifically those active on Twitter), and it was through this group that I met John Knight. John is a SmartGrid Program Manager for Whirlpool Corporation who describes himself as a maker, geek dad, space enthusiast, and Lego fanatic.

"I've been building since 1976," he said. "I have a lot of Lego and an entire room dedicated to them. My favorite building theme is Classic-Space."

Last year, John created a 7-foot space ship and moon base for an exhibit at an art gallery in St. Joseph, Michigan. His latest Lego project is smaller in scale, but has reached a much larger audience. He used Lego's Digital Designer, a tool that lets people create virtual sets, to create a set based on the Solar Dynamic Observatory that will be launched this week from Kennedy Space Center. SDO will study the solar atmosphere to help us better understand the sun's influence on Earth and near-earth space. John's set is a scale replica of SDO, and after working with the SDO team and representatives from Lego, the set was accepted for a much larger order than standard virtual kits (that can be ordered three at a time if parts are in stock) and is now available for purchase through the Lego web site*.

John described the experience as the perfect overlap between space geek and Lego enthusiast in the geek Venn diagram, and already has ideas brewing for his next project. His last non-Lego project was a working steampunk globe utilizing RFID tags and reader (Touchatag) to remote control Google Earth on a steampunked tablet computer.

* To Purchase this limited edition Lego set, follow these steps from John:
Step 1) Download the latest version of Lego Digital Designer.
Step 2) You should see a link to purchase the set. You will have to create an account with Lego.
Step 3) Please be aware that your SDO set may have different graphics than some seen on the web. Those were special "limited" edition sets.
Step 4) If you have ANY problems ordering please call Lego Customer Support at 1-800-838-9647 (US) or see Lego.com for other numbers.

Pete Edwards does a bit of toy-megaphone turbo bending in this music video montage shot at the Casper Electronics lab. Dang - this makes me think I should start soldering to music myself!

Related:


How-To: Wet/dry control for a toy voice changer

Photo courtesy Flickr user Scoutj.

This article just drew my attention to the interesting story behind carmine, which is a pigment precipitated from carminic acid (shown below) extracted from the bodies of Dactylopius coccus, the so-called "cochineal" insect, of which the acid comprises up to 24% of dry body weight. The cochineal is a parasite of cacti of the genus opuntia, from which it has been harvested in South America since pre-Columbian times. It is carmine that produced the "red" of the famous British "red coats," and today carmine is still produced in great quantity for use in fabric, cosmetics, and as a natural food coloring. (Vegans beware!) [via Neatorama]

Photo Courtesy CollectSPACE.com

When I interviewed STS-130 Mission Specialist, Bob Behnken last week in Houston at Johnson Space Center, I asked his advice for what to expect at my first shuttle launch. He gave me three tips: First, he said, "Bring bug spray." Fortunately, we didn't have to worry about that with this morning's cold, windy weather. Second, he told me to hope for clear skies. Night launches are all spectacular, but when skies are clear, you can keep eyes on the shuttle for up to eight minutes. When skies are cloudy, that visual can be as little as eight seconds. Finally, he repeated something I've heard from shuttle viewing veterans: put the camera down and just watch.

With mostly clear skies and a flawless countdown, my more-than-20-year-old dream was realized as the shuttle Endeavour lifted off before dawn this morning. The bright white light from the massive rocket boosters turned night to day within seconds. My brain could hardly process what my eyes were seeing, and when the sound finally hit my ears (there are a few strangely quiet seconds before the sound reaches you) my entire body felt the force of this amazing vehicle. It was bigger, better, and more exhilarating than I ever could have imagined.

I cried like a baby.

The tears started when Endeavour was given the final "go" for launch. They were slow as my heart rate began to pick up speed, and by the time the shuttle cleared the tower, I was breathless. Once Endeavour pierced the thin clouds and the entire sky was glowing bright white, the sobbing came on hard. As I listened to the loud outdoor speakers blast the communication between Mission Control and Commander Zamka, and watched Endeavour sail through the sky as a bright star for a good seven minutes, I sat on the ground and cried uncontrollably. I cried for the spectacular images my mind was still attempting to process. I cried for the awe and wonder of such an incredible display of human ability and teamwork. I cried for the realization of such a long-held dream that I wasn't sure would ever happen. And I cried to think that this icon of my childhood, the vehicle of exploration that lit my imagination on fire so many years ago, only has four more launches ahead of her.

As I finally settled back in to the press room and finally overcame my weeping, I found myself overcome with a smile that would not end. I smiled for the amazing opportunity I'd just had. I smiled in gratitude for all the folks who helped make this dream a reality. And I smiled at the thought of this great crew unstrapping from their seats and floating as they start their time on orbit. I can't wait to watch them as they work through this important and complicated mission. And more importantly, I can't wait to share it all with you.

Can't wait to cozy up to the new Apple iPad? Why not try your hand at constructing this handsome papercraft surrogate? Here's links to the front and back. It may not have access to your iTunes or eBooks like the real thing, but it does share its good looks and lack of multitasking, GPS, and camera. [via MacRumors]

More:

• Theo Jansen papercraft walker
• Papercraft AK-47
• DIY Sci-Fi Movie Paper Craft Gallery
• Guitar papercraft

Since there's almost any size and shape of solar panel available for purchase from a myriad of vendors across the Internet why would anybody want to go through the hassle of tabbing together their own cells to build a solar panel? Because you can, obviously. This DIY video will run through the basics of chaining together polycrystalline cells and leaves the details like enclosure and such to the user.

More:

• Soda can solar panel
• Cobbling together broken solar panels
• DIY solar trackers
• Solar power for your electronics gear
• DIY Solar thermal panel project
• Intern's Corner: Solar charger for iPhone 3GS

William Stranger specializes in building furniture out of repurposed wood. I especially liked the massive coffee table whose top is a four-inch-thick slab of bowling lane. It's part of a exhibit(?) called Second Growth:

A second growth forest is one that has re-grown after it has been heavily logged or clear-cut. The installation of reclaimed materials, organic furniture and hand carved objects suggests the life cycle of a tree. It encourages a closer look at the relationship between consumption and conservation and promotes the idea of a culture in balance with the natural world. A tree is borrowed from its cycle without breaking it. The wood is worked with attention, treated with non-toxic finishes, and after its long second life it will return to nourish the earth. Scrap wood is saved and becomes the raw material for innovative design.

[via dornob]

A commenter on my recent dazzle camouflage post alerted us to the fascinating story of the HNLMS Abraham Crijnssen which, in 1942, escaped destruction by the Japanese fleet because the crew moored her among other small islands and covered her in a thick layer of tree branches, thereby disguising her as a small island. [Thanks, rekinom!]

Check out UK maker John Honniball's sweet workshop panorama.

This is an almost-360-degree panorama of my computer and electronics lab and workshop room. The four big CRT monitors that you can see were obtained from FreeCycle, as was the iMac. Far left is a Stag PPZ EPROM programmer. At the right-hand end are the HP stack (1980B, 1630G, 3456A) and a Tek 575 curve tracer. Far right is an HP LaserJet 4+ with duplexer. On the electronics bench, you may be able to see an Arduino and some LEDs.

See the panorama full-sized on John's Flickr page.

This week on CRAFT we saw:

Nerdy geeky love and more, read on!

Brooklyn-based hacker collective NYC Resistor is holding its first 48-hour hackathon this Friday starting at 6pm and ending Sunday, February 14th at the same time.

You can work by yourself or with a team, and if you don't have a team/project we'll assign you to one.

The format is open, you're welcome to come and go as you please. We'll keep the Club Mate flowing and follow a loose schedule of demos and workshops to help spark your imagination.

Interested in participating? Find out more information or register on Eventbrite.

I just can't get enough flatpack.

The Belkiz Feedaway is a cardboard portable feeding chair that can be used for temporary situations or where space is at a premium. It is cardboard, easy to assemble for toddlers up to 20 months of age up to 20kg who are away from home. Ideal for temporary and commercial use, the Belkiz Feedaway is safe, strong, folds up easily and quickly and stores away in a tiny space. Ideal for mobile and modern lifestyles.

What do you think, readers? A silly concept that would never work, or is there a cool idea here? [via Inhabitat]

These are lovely.


I also like these fishing lure earrings from CRAFT volume 03...


And of course, iPhone home button earrings...

The forces that affect buildings and other structures can be modeled inexpensively and quickly by using the humble drinking straw. Usually, the projects built with drinking straws are rapid build. Storage can be an issue if you plan on having students work the design over multiple classes, or saving the structure for reference. This really becomes a problem if you are doing the same project with a full load of 5 classes. By doing the project in a single class period, you can easily reuse the straws, having students discard any cut ones and replenish them with new for the next group.

For fasteners, there are a few options. Tape can work, but is hard to remove if you are reusing straws. This can be good if you are aiming for a more durable product. Sewing pins can be used over an over again. Having students count out the pins they need and keeping them in plastic cups is works for multiple classes. As a new batch of kids collects their supplies, they just check to see that the last group left the right number of pins in the cup. This can occur at the same time they get the straws they will need. Some towers are built with paper clips as the fastener. If you do this, you may give the option of using wire cutters and pliers to modify the pins.

In introducing the ideas of the project, you will want to discuss the forces of tension, compression, torsion and shear. As students build, they should be able to recognize the forces that affect buildings and other structures and devise ways to compensate for them.

Often in straw towers, you will want to incorporate the differences between live load and dead load. Sometimes called dynamic load and static load, you can model them by having the tower hold a weight, representing the live or dynamic load. You can also have students become more aware of factor of safety and failure analysis of their structure.

The building of these towers can lead to a competitive situation. You can have students all build with the same materials, and set the grades on how high the towers stand while holding the live load. One way of doing the calculation is to set the highest and lowest possible grade, 100 and 75 for example. Then you measure the towers, identifying the tallest structure. If the tallest tower is 50 inches, then each inch is worth 1/2 point. The group with the tallest load bearing tower gets the 100. A tower that holds the live load at 40 inches would get a 95. The group that has the ball on the floor gets the 75. The other groups in between get grades based on the height of the ball, or other load.

You can also use a project like this to examine the forces affecting a building during an earthquake.

Have you built a straw tower as a student, or have you used the project as a teacher? How well does a project like this work in homeschooling? What techniques work well, and what resources are really helpful?

Spaceflight is complicated, with many constraints and requirements that must be met before all systems can claim "go" for launch. Unfortunately for STS-130, this evening's "dynamic" weather proved to be too risky for this morning's launch. Endeavour's first launch attempt was scrubbed at 4:30 AM EST. The good news? We get to try it again in just under 24 hours and get to experience all the launch countdown fun twice. Not bad! Check back with my tweets tomorrow for the status of Endeavour's second launch attempt.

Pictured above: Endeavour's crew as they walk out to the famous Astrovan that will deliver them to the launch pad.

This 2007 piece by Vancouver artist Steven Shearer (Wikipedia) is called "Geometric Healing Cell for Youth - Model III." It reminds me of some of my favorite work by Tom Friedman. I love art that challenges our expectations of everyday materials. [via Neatorama]

With 87,000 bar fights a year in the UK, with a combined health care cost of over 2.5 million pounds per year, the British Design Council saw a need for better bar glassware. Design agency DesignBridge stepped up with these concepts. What do you think, readers? How would you redesign the classic pint glass to to make it safer, while keeping it glass? [via Core77]

From the MAKE Forums:

Forum user LeversFulcrumsLoads has amassed a large quantity of leftover Altoids tins, and is trying to think of something to do with them. Now, we've covered many projects that make use of a single tin, but I can't think of any that called for a whole pile of them. Got some ideas? Chime in on the forum discussion!

It was like stumbling onto something out of National Treasure.

Is there an elegant way of punching holes in the sides without having sharp jaggies surrounding a USB socket?

With literally hundreds of tins, I was thinking on the best use of these (pocket survival kits, minty boosts, recycle, really big LED Throwie's, etc...) but have been overwhelmed by the staggering amount of sugars and fillers ingested in order to stack this cache up. Insights are welcomed. Wow, talk about supporting the U.S. market.

More:

• Altoids and tin cases
• Altoids Tin Garden
• Altoids tin trebuchet
• Altoids tin woodworking tools
• Solar Theremin in an Altoids tin
• Altoids tin guitar

I'm here at Kennedy Space Center in Cape Canaveral, Florida, in preparation for the launch of STS-130 and the Space Shuttle Endeavour. After a brief spell of heavy rain last evening, the skies cleared, making a perfect backdrop for this morning's retraction of the Rotating Service Structure to reveal Endeavour in all her glory.

Endeavour is scheduled to launch at 4:39am EST Sunday morning, and it will be worth waking up - or staying up - to see. This is the last scheduled night launch of a shuttle. With only five remaining launches, not only are the opportunities to view one dwindling, but experiencing the impressive views of a night launch will be likely gone forever by this time tomorrow. People who live along the eastern coastline have a good chance of viewing the launch from their backyards. If you're further west in the US, why not just stay up a little later with friends and celebrate this milestone in the space program? You'll still have plenty of time to go back to bed and wake up in time for football (if that suits your fancy).

I'll be tweeting from Kennedy Space Center all night long as the launch approaches, and I've been constantly updating pictures over on Flickr. Stay tuned for continued mission coverage over the next week and a half, including an interview with the STS-130 crew member who is a maker at heart.

Pictured at top: This morning's RSS Retraction, revealing Endeavour. Below: A night launch of the shuttle Discovery. Image courtesy NASA.

Thanks to Extech for giving away all this swag! And it keeps getting better. Not only was the RC100 upgraded to a RC200, but there are TEN of them now, and TEN pen-style multimeters! Hot dog! Still only one EX540, however.

(winners after the jump)

Matt Cottam, founder of Tellart, presented Wooden Logic: In Search of Heirloom Electronics at interaction10 yesterday. Here are my running notes on his discussions of sketching with tangible objects, physical interfaces to the iPhone, and heirloom technology.

These are fun enclosures for your iPod or other smartphone. I made a simple one for my G1, and now need to find some driving/biking games to try it out on. It was fun and frustrating to stir the bin in search of just the right part. So often, when kids build with them, they make wildly complex designs that are at times of low structural integrity. Is there any formal LEGO design curriculum out there?

This is a great way to test out your rapid prototyping skills. Once you get a decent iteration, then the hunt is on for a more permanent solution.

Back when I got my Chumby Guts kit a few months ago, I imagined that it would be pretty funny to set up it up Teletubby style with the screen in the belly of a plushie. At the time, I didn't have a suitable doll to sacrifice at the alter of maker fun, but like Kent Barnes, I did have the box it came in. I like the alarm clock features, and enjoy being chirped awake. Eventually, though, the box kind of wore out, and my Chumby Guts lay loose on the night table.

Sunsue heard my call for a sacrificial Teletubby and found me a Po doll. When I saw it, I realized that this one would not work, since it is smaller than the ones my daughter used to have. It does have an interesting voice box, so that will come in handy some other day. A bit later, I fell upon a Build A Bear monkey at the Duxbury Mall. In his first invasive surgery, I found the heart, bar code and a monkey voice box with a dead battery. After swapping out the dead battery, I hid the voice box in my daughter's school bag, where it occasionally went off (ooh ooh aaah aah) as she bumped the bag. It now sits atop her social studies teacher's desk as a warning signal for those about to get a detention.

The monkey looked like he was on a starvation diet for a couple of weeks, as his stuffing sat in a bag in the cave as waited for the right moment to do the next operation. Eventually I got tired of loose ChumGutz on the night table and got together with my neighbor, Robin. She's pretty crafty and I figured would have some good techniques for the project. We went over and got to it. A few snips in the belly and monkey boy had gastric bypass of a kind. We hot melt glued the screen in place. Then I removed the speakers from the plastic holder and fit the circuit board inside the body behind the screen. I thought that I would have the switch loose, but left it attached over the power input and usb connectors. We re-stuffed him and he became ChumbyChimp. He is pretty happy to hang out with Po, and even gets to spend a little time with Creepy Baby.

This is the third iteration for my Chumby Guts, and I suppose that it will be a somewhat transitional situation. It would be useful to sew an old PDA stylus into his hand. That way it will always be easy to make accurate selections on the screen. I would like to put in some iMac ball speakers left over from the 50 iMacs project into the body instead of the nice little box speakers it came with. It would also be neat to add a switch to the hand with either a tactile switch or some conductive thread. I would definitely like to explore battery power, if only to add a bit of portability between locations in the house. The kitchen counter is a decent location, and with the right widgets ChumbyChimp really adds to the room.

More

• Chumby in a box
• The Chumby has landed!
• Custom case for Chumby Guts
• Chumby guts -- so delicious!
• Chumbophone - antiqued Chumby Guts
• http://blog.makezine.com/archive/2009/12/chumby_guts_enclosure_modern_reliqu.html
• Build: Chumby Guts kit

Jeri's Star Trek Next Generation Pinball Modifications - Trouble with Tribbles. Nice!

Modifications to a Williams Star Trek Next Generation pinball. Added lasers to the cannons, custom-etched flipper bats and added animatronic tribble for replays.

When I think of horrifically frustrating project experiences that end in an outcome far exceeding expectations, two instances spring to mind. I tell these stories frequently (stop me if you've heard this one before) because I think they represent the power of perseverance in the face of projected failure.

The first tale I've told countless times, probably even here on MAKE, about a friend of mine, a fabric artist, who, back in the 80s, entered a weaving contest in a fabric arts magazine. She'd never done any weaving. She got some how-to books, borrowed a loom, and decided to weave the fabric to make a seersucker shirt. It quickly turned into a nightmare. The seersucker threads kept breaking as she wove them. It became a huge exercise in frustration, but she kept at it. She thought her difficulty was due to the fact that she was a newbie. Finally, after much struggle and heartache, she finished the weave, made the shirt, and submitted it to the contest. The magazine called a month or so later and said they were stunned by the piece, especially because you "can't" hand-weave seersucker! She'd won the contest, and a ginormous, gorgeous Swedish loom that consumed most of a small room in her house. This is a perfect example of how you can do things when you're ignorant of (or ignore) the common belief that you can't. Sometimes ignorance is a huge advantage.

The second story concerns my BEAM robot pieces in MAKE, Volume 06. I agreed to write an introduction to BEAM and two simple BEAM robot projects for the issue. I've done plenty of BEAM projects over the years (since the mid-90s) and had made several Symets (think: solar-powered top), but I'd never made a Solarroller, except for a kit version. Still, I figured I'd choose those as my projects. How hard could a roller be? It used the same solar-engine circuit as the Symet, and frequently used a cassette motor and part of the body of the cassette player for the structure, and a couple of wheels. No biggie. So, of course, I made sure to wait until the absolute last minute to start working on the piece.

Having trouble visualizing how current flows in a circuit? A great way to get a feel for how a circuit works is to use a circuit simulator, however most are either expensive or require a fair bit of electronics knowledge to use. If you are just wondering how a common circuit works, then you might want to check out this Java-based Circuit Simulator. It's got a large library of parts and pre-built circuits that you can simulate and modify to get the feel for how they work. Though it may not be a full substitute for more traditional full-featured simulators such as LTSpice or Qucs, it is free, runs in your browser, and is actually pretty fun to play around with. [via Stephen Hobley]

The quantum-logic clock, which detects the energy state of a single aluminum ion, keeps time to within a second every 3.7 billion years. The new timekeeper could one day improve GPS or detect the slowing of time predicted by Einstein's theory of general relativity.

[via Wired Science]

My friend, Willow Bay, has a brief piece on The Steampunk Workshop called "Why I believe in maker culture." Snip:

All the things I do in life (which, admittedly, is a lot) are about Doing. I'm up to my eyeballs in Stuff to Do and up to my elbows in What I'm Doing because I love it, and because I so adamantly believe that Maker Culture is a healthy response to an unhealthy pop culture. Here's a glimpse at why I feel this way.

When you're a hammer, everything looks like a nail. Which is to say, you use the tools you have to solve the problems at hand. Tools and technology do, of course, range everywhere from a wrench to language to roads to electricity. And when your tool is the mindset of a maker, any system at hand looks like something to be tinkered with and improved upon.

Willow is also the director of a relatively new makerspace in Seattle called Jigsaw Renaissance. I love the first paragraph of their About Us page:

So, here's the idea: Ideas. Unfiltered, unencumbered, and unapologetically enthusiastic ideas. Ideas that lead to grease-smeared hands, lavender sorbet, things that go bang, clouds of steam, those goggle-marks you see on crazy chemistry geeks, and some guy (or girl) in the background juggling and swinging from a trapeze.

What is your feeling about the concept of "maker culture?" Is there such a thing in your mind? It it a fad or something more significant and enduring? Has becoming a maker and participating in things like Maker Faires, hackerspaces, Dorkbots, or other DIY festivals and activities, changed the way you look at the world?

Why I believe in Maker Culture

Arduino package for Eagle, I know ya'll are going to like this... now you can make shields and custom projects with ease (site and on github).

IEEE Spectrum's 25 Microchips That Shook the World presents a list of most groundbreaking IC's, including familiar classics like the 555 timer, 741 operational amplifier, and a link roundup to relevant info resources - good stuff. [via jeriellsworth]

Interesting article over on TwistedSifter about the use of so-called "dazzle" or "razzle-dazzle" camouflage beginning during WWI. (The Wikipedia article is pretty good, too.) It's a kind of practical op-art: The idea was not so much to make the ship invisible against the background, but to confuse enemy weapons operators as to its distance and heading. The Rhode Island School of Design has a wonderful online collection of various paper plans for dazzle camouflage schemes donated by Maurice L. Freedman, who was district camoufleur for the 4th district of the U.S. Shipping Board, Emergency Fleet Corporation, and would go on to invent the board game "Battleship." [via Dude Craft]

There has been no shortage of food-based instruments around here, however I particularly like this one that Youtube user heita3 made from an egg shell. It's a good reminder that pretty much any old thing can be made into a fun project! [Thanks, Nancy!]

More:

• How-to: Clay sweet potato ocarina
• Ocarina from soda can
• Carved carrot clarinet
• Handlebars as wind instrument

YouTube user GusJanss made an awesome Mindstorms walker that uses only 3 NXT servos to move six legs. Nice hack!

The Hexapod Walker is a six legged LEGO NXT robot walker. It uses a gait that causes very little slippage at the feet so can walk well with rubber tipped feet all the way around. The left and right motors control their respective sides corner legs. The motor in theback controls the middle set of legs so that either left or right corner legs can be lifted. When left middle goes down, left corner legs go up and right middle goes up.

First program just walks in a simple pattern. The second program was for a walking robot race and uses the small LED lights as navigation aids. Light sensor, mounted in the back but looks forward, sees the light and with every step adjusts step size to aim for light.

[via the NXT Step]