Headin’ to Maker Faire!

The lab staff is busy boxing stuff up for Maker Faire this week, so our publishing schedule will be rather arrhythmic this week as it has historically been during such things. We have a huge backlog of new projects to talk about, and we’ll get a chance when things calm down a bit. We’ll also write up a few reports from the show floor this year.

Coming to Maker Faire? Find us at the southeast corner of the Expo Hall. We look forward to seeing you!

Electronic Phyllotaxis

Electronic phyllotaxis

Many electronic components are available on spools that can be used by machines for counting them out or placing them on boards. These capacitors were once on such a spool, but since we didn’t need quite enough for a full spool, they were counted out, rolled up and shipped out to us. They exhibit the opposite spirals of phyllotaxis that are probably most familiar from the face of a sunflower. Who knew capacitors could be so lovely?

Evil Mad Scientist Laboratories and CandyFab at MakerFaire!

Attention SF Bay Area folks: Evil Mad Scientist Laboratories and CandyFab are coming to Maker Faire! Space-time coordinates: San Mateo, CA, May 3-4, 2008.

We’ll be there in force with (amongst other things) a tabletop BristleBot Arena and great progress to show off on a lot of our upcoming projects: Next generation interactive LED coffee table panels, the debut of Peggy 2.0, and the brand new design for the CandyFab 5000, all of which we’ll be writing much more about this summer. Find us in the south hall, past the Tesla coils.

Great things are coming to Maker Faire, and you can come visit, get a sneak preview and chat.

We’ll sure hope to see you there. Advance tickets are on sale at a discount through Friday April 25.

Another oddity of lotus roots

Lotus Rootlets 2

Nelumbo Nucifera, also known as the Sacred Lotus (amongst other names) is a magnificent oddity of a plant. It roots in the mud of shallow lakes and ponds, growing leaves that float on the surface as lily pads lily pads or rise up above the water on hard stalks. The lotus flower itself is the model of a classic and gracefulwater lily flower, where both the flower and resulting seed pod have a characteristic pattern of holes.

 

Lotus Rootlets 1   Lotus Rootlets 3one rootlet   Thin Section

The hole patterns continue throughout the plant, showing up in in the stalks and underground stems (rhizomes) of the lotus plant. The rhizomes, usually just referred to as “lotus root” are prepared as vegetable in many types of asian cuisine. Typically you’ll find them served as thin slices through the root (a couple of inches in diameter), showing the distinctive pattern and prepared in many different ways– I’m partial to tempura. (If you haven’t had them, the taste is a bit like a more substantial and nutty version of a water chestnut.)

Another way that you can sometimes find lotus root prepared is as pickled lotus rootlets, which are immature and more tender lotus roots in brine (pictured here). You might find these in a salad or Vietnamese sandwich— they are tasty like their bigger friends.

Appearances aside, the first bizarre thing about the Sacred Lotus is that it’s one of only a handful of known plants that displays “warm-blooded” behaviour: It actively regulates the temperature of its flower to be at a near-constant temperature, even as the ambient temperature varies by a much larger amount. (

The second thing, which I haven’t seen written about anywhere, has led me to ask: how can a lotus root be like a spider?

Continue reading Another oddity of lotus roots

Linkdump: April 2008

Sierpinski Cookies

Sierpinski Cookies-11

A few months ago we showed you how to make beautiful fractals in polymer clay.

Take that idea, run with it, and where do you end up? In the kitchen, making Sierpinski cookies! These cookies, made from contrasting colors of butter cookie dough, are a tasty realization of the Sierpinski carpet, producing lovely, edible fractals.
As with our earlier project involving clay, you can make these by using a simple iterative algorithmic process of stretching out the dough and folding it over onto itself in a specific pattern.
Continue reading Sierpinski Cookies

Catalog review: Garrett Wade Tools March 2008

GarrettWade Tools

When I reviewed the Feb. 2007 Lee Valley catalog, reader Dennis suggested we get the Garrett Wade Tools catalog. Excellent suggestion! We love drooling over tools, and the Garrett Wade catalog is a great place to do that. They carry a wide variety of “Tools for Enthusiasts,” primarily precision woodworking tools. They also carry high-end knick-knacks and home and garden items.

Continue reading Catalog review: Garrett Wade Tools March 2008