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Hack A Day (4 unread)

3D printing with chemicals

Posted: July 15th, 2010, 3:00pm MDT by Jakob Griffith

From the horse’s mouth, “In this lithography experiment light creates free radicals from phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide which induce polymerization of 1,6-hexanediol diacrylate.” Or for those without a Chemical Engineering degree, light from a (high resolution) projector interacts with a special liquid, producing a hard polymer on the surface. A platform within the liquid is lowered, taking [...]
Android Development 101 – Part 1:Hello World

Posted: July 15th, 2010, 1:00pm MDT by Greg R. Jacobs

This article will focus on developing a simple hello world program for android using Java. Google has recently released a “cute and fuzzy” programming environment for beginners to get into but I haven’t had the chance to try it, so we will be focusing on the Eclipse IDE here, which you should have set up [...]
That light switch is disgusting!

Posted: July 15th, 2010, 11:07am MDT by Mike Szczys

[Katrin Baumgarten] has fourteen switches that are made to gross you out. From a button that retreats into its hole as your finger approaches, to a mysterious goo-oozing faceplate, to a hairy housing that gets aroused as your try to flip it on, the intrigue is enough to get you to try out the next [...]
Foam board servo driven arm

Posted: July 15th, 2010, 8:06am MDT by Caleb Kraft

[Lucky Larry] posted some pictures to the Hack a Day flickr pool that caught our eye. He made a quick and cheap servo driven arm. Constructed from foam board and some hobby servos, he’s using an Arduino for the brains. You can download the pattern for the arm pieces as well as the code on [...]