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February 8, 2010

Parabola, a wooden ball launcher

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]

Posted by Matt Mets | Feb 8, 2010 01:30 PM
Arts, Remake | Permalink | Comments (1) | Suggest a Site

Math Monday: Skewer hyperboloid

Skewer hyperboloid

By George Hart for the Museum of Mathematics

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!

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Maker Birthdays: Jules Verne

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!

Hello World hackerspace map

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

Melting table

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

Maker Birthdays: Dmitri Mendeleev

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.

In the Maker Shed: Open Heart kit V2.0

MKJR1-2 2.jpg

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.

Lego Solar Dynamics Observatory kit

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.

Bending with Casper Electronics

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!

Brilliant red dye made from insects

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]

Rachel in Space: A dream realized

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.

Papercraft Surrogate iPad

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]

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Assemble your own solar panel

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.

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Bowling lane coffee table

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]

Warship camouflaged as tropical island

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!]

Awesome workshop panorama

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.

CRAFT weekly recap

This week on CRAFT we saw:

Nerdy geeky love and more, read on!

NYCR 48-hour hackathon

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.

Flatpack cardboard high chair

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]