Liquid Tree

November 11, 2008 by Kimberly Lau 22 Comments

Liquid Tree is decorative, functional, and green. It’s a liquid feedback display created by [Jia Yi Lin] that is designed to tell you exactly how much water you’re wasting in the shower. Behind the pretty tubes is some interesting hardware. [Lin] used an Arduino board, and based her code off the Unipolar Stepper example. She’s posted her own code and wiring for the project. When hot water is turned on, the motors decrease the amount of liquid in the tubes. This causes the pattern to slowly disappear, indicating water consumed.

[via NOTCOT]

DIY RFID Implant

October 15, 2008 by Kimberly Lau 58 Comments

[youtube=http://www.youtube.com/watch?v=vsk6dJr4wps]

[Quethe] implanted an RFID chip into his hand so that he can access his handgun safe without having to fumble around for keys or buttons. He’s also planning to do more with the chip, including installing readers so he can access his car without keys. [Quethe] claims that inserting the chip hurts less than drawing blood. From the video he’s apparently using livestock grade equipment for the injection. While we applaud his ingenuity, we’re not sure that the convenience of easier access to guns and cars is actually worth the trouble of putting a chip in your body.

We’ve covered quite a a few hackers that have chosen to chip themselves in the past. [Mikey Sklar] did it back in 2005 after constructing a pair of pants to block the signal. [Amal Graafstra] ended up writing RFID Toys after implanting himself. [Larry Pesce] from the PaulDotCom podcast had his chip cloned on stage by [Major Malfunction] at ShmooCon. [Annalee Newitz] had her chip cloned by [Jonathan Westhues] while covering RFID hacking for Wired. It’s interesting to see the practice of DIY RFID chipping gaining traction, and, thankfully, all of the people just listed understand that it’s not a form of security.

[via Boing Boing]

Strunk & White Can Apply To Programming

October 15, 2008 by Kimberly Lau 8 Comments

The Elements of Style by [William Strunk, Jr.] and [E.B. White] has long been a favorite of English majors and great writers. [James Devlin] suggests that it can also be a good reference for programmers. With just a few changes in wording, the same guidance that applies to good writing can apply to good coding. For example, [Strunk] and [White} emphasize the importance of structural design to writing. Replace “writing” with “programming”, and the principles are exactly the same: “Programming, to be effective, must follow closely the thoughts of the writer programmer, but not necessarily in the order in which those thoughts occur.” So keep this guide in mind next time you start a new project.

[via Kottke]

Prevent Drunken Emails With Mail Goggles

October 7, 2008 by Kimberly Lau 19 Comments

Google introduced a new Labs feature named Mail Goggles. If you turn it on, on late night weekends, the feature will ask you to perform some math problems before you can send an email. We’re not sure how widespread a problem drunk emailing is, but maybe the delay will allow you to sober up and realize when you’re about to CC your entire company on a rant about your boss, or your adventures with the cute guy or girl in the office. It’s enabled for late nights on the weekends, but once you’ve turned it on, you can adjust the time in the General settings.