DIY

Student builds R2-D2 powered by Raspberry Pi

Count computer science Ph.D. candidate Lingxiang Xiang as the latest tinkerer to tap the potential of the cheap Raspberry Pi computer.

The enterprising student fixed a broken R2-D2 toy replica using a Raspberry Pi computer and other off-the-shelf electronics bought online. The toy was meant to be a birthday gift for his girlfriend.

The end result: a robot with face recognition; motion and distance detection (to avoid bumping into obstacles); and the ability to understand voice commands in both English and Chinese.

Like the movie version, the R2-D2 can also record and play back audio messages, though obviously holographic messages aren't in its repertoire. … Read more

5 safe places to put your smartphone while driving

After moving to a new city and buying a new car to get around in, a close friend of mine found herself needing some sort of GPS navigation to guide her around her new hometown. So, she bought a used portable navigation device and hit the road.

"This GPS sucks! The maps are out of date and it didn't come with a cable to connect to my computer for updating!" she declared after just a few trips.

"Wait, didn't you just buy a new iPhone?" I realized aloud. "You have to be the … Read more

Whoa. I should have upgraded to an SSD last year

Today I transformed my 2009 laptop into a machine that feels like it's from 2012.

All I did was rip out its 500GB spinning-rust hard drive from Seagate and popped in a 256GB Vertex 4 solid-state drive from OCZ. Now I'm kicking myself for not upgrading to an SSD a year ago.

If you're not up to speed on your PC components, here's the technical background on SSDs vs. HDs. For decades, hard drives handled storage chores by writing data as tiny magnetized patches on spinning platters. SSDs use flash memory chips instead, a design that … Read more

Functional Iron Man gauntlet zaps enemy balloons

What are you going to do to mark the upcoming release of "Iron Man 3"? If you're superfan Patrick Priebe, you build your own Iron Man laser gauntlet.

As a 6-foot-tall, Mohawk-sporting hockey player, Priebe can come across as intimidating. His penchant for making laser weapons doesn't help much either.

His Web site laser-gadgets.com showcases his passion for the science fiction and video games, a passion reflected in his jaw-dropping creations -- guns that fire laser beams as well as laser-guided crossbows.

His latest creation is the Iron Man Laser Gauntlet, which fits over Priebe's forearm. It fires lasers, not anti-tank missiles. … Read more

DIY Ewok cat hat: May the feline be with you

Ewoks aren't real. This is unfortunate. Sometimes we just have to make do with what we can find laying around the house. For Instructables user carlsonbryant, that happened to be a cat and some scrap leather.

Carlsonbryant lays out the steps for turning your regular domestic feline into a denizen of Endor. The ingredients are basic. You need a piece of leather or leather-like material about a foot square, a leather punch, scissors, and some type of twine or string to hold it all together.

I took on the mission of building my own Ewok cat hat using the instructions. It took about 20 minutes of drawing on a old piece of chamois, cutting out the pattern, punching holes, and tying it all together. The cats hovered around me as I worked, batting at the leather and strings.… Read more

Control your lights using Siri and a WeMo Switch

There are plenty of creative hacks you can use to control a random appliance or two in your house with Apple's Siri, but most of them take some level of programming and hardware expertise to accomplish.

I've come up with a less tech-savvy way to use Siri to control a lamp, or anything that plugs in. You'll only need to know how to give Siri a command after everything is set up.

To get started you'll need a Belkin WeMo Switch and an IFTTT (for "if this, then that") account. Provided by the WeMo … Read more

Circuit Playground plushies a perfect post-Xmas toy for hacker kids

It's a little late for Christmas presents, but if you throw a little time-machine action into the mix, this might be the perfect gift for the hacker kid in your life: Circuit Playground plushies.

The plushies are the newest product from Adafruit Industries, a leader in the open-source hardware world and the maker of a wide range of products for hackers young and old. Led by Entrepreneur magazine's entrepreneur of the year Limor Fried, Adafruit has a long history of promoting the do-it-yourself movement, and giving those who play and work in it the tools they need. … Read more

Huge mechanical snake brings Burning Man vibe to CES

LAS VEGAS--When you come to CES here, you expect to see computers and TVs galore. Mobile phones, sure. Printer and speakers? Check. But a 50-foot-long mechanical snake?

Though we're in an arid, desert-like Nevada environment (never mind all the cement and golf courses), this isn't Burning Man. But sure enough, just behind the CNET trailer here, Titanoboa is strutting its stuff. And indeed, Titanoboa is a 50-foot mechanical snake.

Created by EatArt, the Vancouver arts collective, Titanoboa seeks to invoke the promise -- or the threat -- of global climate change, and the kinds of things we might start to see happen on this wonderful planet of ours. According to the Titanoboa project page: … Read more

Burrito Bomber drone drops non-weaponized meals

We all wanted so badly for the Tacocopter to be real, but the supposed Silicon Valley quadrocopter taco delivery service was just a clever fake, designed to appeal to our most basic desires for Mexican food delivery by airborne gadget.

Just because we've had our hopes dashed once doesn't mean we shouldn't come back for more. A new hope has arisen. It's called the Burrito Bomber. As its name might suggest, the Burrito Bomber is a flying drone capable of dropping a burrito payload from the sky.… Read more