Discussion about yesterday's mercury "beating heart" reaction post got me thinking about chemical oscillators in general. Turns out, the mercury beating heart may be the only mechanically oscillating chemical reaction that anybody knows about. It's certainly the only one I know about, and its the only one I can find on the web. But if you know of another mechanically oscillating reaction, do please drop me a comment. However...
I know it's just a video of a 3D printer laying down plastic, but Festo sure does a great job of showing how sexy the hardware is! I love the spool holding the plastic, and the threaded rods spinning as the extruder rises and drops.
Need a way to help the youth around you learn about flight? Try out paper airplanes! Most people know how to make a basic paper airplane, but there are other designs out there, some even claiming to be the ultimate paper airplane design. Inside the Dangerous Book for Boys is a two page section on paper airplanes with a few alternate designs you may have not tried.
I don't have my own workshop, just a desk in my bedroom that is more likely to have a pile of kid socks on it than an actual project. (Or, even more likely, it would have both projects and socks on it, making for a huge mess...) Consequently, I'm envious of and fascinated by other people's setups. So, please share your workspace, workshop, desk, bench, what-have-you! Leave a URL in the comments, add a photo to the MAKE Flickr pool, or send me an email (johnb at makezine dot com) and I'll post the most interesting ones.
(Thanks to Pat for the photo of his excellently messy workbench.)
It's freezing outside! At least it is in our neck of the woods. Trust us, we know how much you want to go outside and terrorize play with neighbors and your robotic giraffe, but it's just too cold outside! Did we mention it's cold?
Well, it seems like a lot of us are coming down with the dreaded "Cabin Fever", so we figured it's no time like the present to have a Cabin Fever sale in the Maker Shed. We have a fresh re-supply of our most popular kits, and a juicy sale on everything from necklaces to chemistry sets; finger puppets to Erector sets. Yes, even Arduinos are over 20% off!
Warning: Deals may be tempting enough to keep you indoors even if you live in the Southern Hemisphere.
We've posted about Jim Kelly's online weblog, chronicling his way through our beginning book, Make: Electronics. But Jim's not the only person taking this trip online. Ian Fitzpatrick is doing the same thing. And he's doing video for most of the entries, giving you another way into the experiments. Nice. Many thanks, Ian.
In the Maker Shed: Make: Electronics Our Price: $34.99 Want to learn the fundamentals of electronics in a fun and experiential way? Start working on some excellent projects as soon as you crack open this unique, hands-on book. Build the circuits first, then learn the theory behind them! With Make: Electronics, you'll learn all of the basic components and important principles through a series of "learn by discovery" experiments. And you don't need to know a thing about electricity to get started.
As soon as the iPad was announced, Lego fans wondered what it would look like in brick form. Check out the homage by Joe Meno, editor of AFOL bible BrickJournal.
The kinds of dwelling-place dug out of the mountains are not of a temporary nature but rather are permanent homes (having been lived in for the last 2000 or 3000 years). The pastoral type architecture (shepherd huts known as kapar or gambeh, and barns or sheepfolds) can be seen here and there about the landscape and is part of the built heritage.
I am going to walk you through the process of prototyping a Printed Circuit Board using a laser cutter and supplies from your local Radioshack and hardware store. This is a process I have perfected after several prototypes...
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