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How To: Make Trippy EL Wire Headphones That Dance to the Beat of Your Music

At one time or another, we've all enjoyed the visualizations that came stock in Windows Media Player. I remember spending hours listening to my favorite album, putting the graphic equalizer on full screen, and getting lost in the flurry of colors that would dance across the screen. Well, now thanks to the imaginative mind of Instructables user yardleydobon, you can now recreate this rainbow-colored music visualizer right on top of your freaking head—with these trippy EL wire headphones, which...

How To: Unlock Your Front Door Without Keys Using This DIY Keyfob Entry System

Keys are on the way out. They're clunky, take up precious space, and slow you down when you have tons of identical-looking gold ones on your keyring. Everything we can open with keys can now also be opened with wireless technology in just a click—so why use keys anymore? Sure, you can pay hundreds of dollars for an automated lock system on your house—but why do that when you can build it yourself!

How To: Turn Any Magazine into an iPhone Stereo Sound Dock

Coca-Cola has unleashed a brilliant marketing campaign to celebrate the one year anniversary of their online Coca-Cola.FM radio in South America. In the latest issue of the popular Brazilian magazine, Capricho, the Coca-Cola advertisement literally turns the magazine into an iPhone amplifier. Attached on top of the real cover, the advert has two precisely placed flaps on the back page. Simply roll up the magazine, secure the flaps, then pop in your iPhone. Check out the video to see exactly h...

How To: Build a Cheap Arduino Tachometer to Measure the RPMs of Spinning Fans (And More)

A tachometer, or RPM counter, is a device that measures the speed of something that's rotating. In a car with a manual transmission, the tachometer can be helpful in determining when to release the clutch and how much gas to give when you're taking off. This DIY Arduino Tachometer by Chris on PyroElectro uses an infrared transmitter and receiver break-beam pair to measure the RPM of a computer fan. When the fan blade passes between the transmitter and receiver, the IR beam counts the interrup...

News: This Jet-Powered, RC Dragon Can Fly Over 100mph—And It Actually Breathes Fire!

WonderHowTo has seen its fair share of dragon-related projects, from dragon wings, to dragon kites, to less-complicated origami dragons, but we've yet to see anything quite like this. Radio-control plane builder Richard Hamel built this incredible seven-foot-long, fire-breathing dragon using a JetCat P80 turbine and a 50,000 volt stun gun, with a 2.4-gigahertz touchscreen radio controller to fly it.

How To: Discover the Hidden Colors in Everyday Objects with This DIY Video Spectrometer

A spectrometer is a device that splits light into all of the different colors it's composed of that can't be seen with the naked eye. It does this by using a prism to refract or bend the light. Jeffrey Warren over at Public Labs created a tutorial showing how you can make your own video spectrometer and create spectra like the one pictured below. Any guesses as to what the subject is? Believe it or not, that's what whipped cream looks like when viewed through a spectrometer. You can do this w...

News: Windows 8 Reports Your Downloads to Microsoft, But Is It Really a Security Threat?

Security researcher Nadim Kobeissi has discovered that the Windows 8 SmartScreen feature, meant to screen downloads for malicious software, actually reports the data about which applications users are installing to Microsoft. He also says that "the Microsoft server is configured to support SSLv2 which is known to be insecure and susceptible to interception." The two main concerns are the ability of law enforcement to subpoena Microsoft for the information and of hackers to intercept user data...

News: Little Boxes Turns Your iPad into an Old-Fashioned Music Box

Technology is awesome. You can use your iPad to record music or even turn your tunes into a solar system, but sometimes being plugged in all of the time can leave you nostalgic for simpler times. This new concept by Joelle Aeschlimann brings together the best of both worlds by turning your iPad into an old-fashioned, hand-cranked music box. The artist created three different music boxes, each one with its own unique song and visualization. The music boxes were made using wooden cylinders with...

News: This Cardboard Bicycle Cost Only $12 to Make—And It Works!

Stop me if you've heard this one before. A man walks into a bicycle shop, hears about a canoe made of cardboard and is inspired to make an awesome, fully-functional cardboard bicycle. Sound far-fetched? Wait until you hear how his guy actually did it. Israeli entrepreneur Izhar Gafni says that the idea for his method came from Japanese origami. Folding the cardboard increases its strength by 2-3 times, making the material much more durable. Essentially, he made the basic shape for each part w...

How To: 5 Annoying Things About iOS 5 (Plus How to Fix Them)

I admit, when the new iOS 5 update for Apple devices was coming out, I had iTunes open all morning with my iPhone 4 attached... waiting... waiting... waiting until finally the new version of iOS was available for download. I stopped everything I was doing and quickly initiated the process of updating my device. After two excruciating hours, my iPhone 4 was finally ready to go and I couldn't be anymore happy. Who needs an iPhone 4S when you've already got iOS 5?

How To: Set Up a Headless Raspberry Pi Hacking Platform Running Kali Linux

The Raspberry Pi is a credit card-sized computer that can crack Wi-Fi, clone key cards, break into laptops, and even clone an existing Wi-Fi network to trick users into connecting to the Pi instead. It can jam Wi-Fi for blocks, track cell phones, listen in on police scanners, broadcast an FM radio signal, and apparently even fly a goddamn missile into a helicopter.

How To: Restring & Tune an Electric Guitar

Hello again, faithful readers. For today's lesson, we will be learning the correct way to restring and tune an electric guitar. I almost wasn't going to post this because it is so basic. But, as with many basic tasks, there are a lot of people who know how to do it, but can't really do it right. If you are a new guitarist, this is an essential piece of maintenance work, because guitar shops usually charge way too much for this task. Of course, I'm kinda cheap, so even 5 bucks is too much for ...

How To: Bypass an iPhone's Lock Screen in iOS 12.1 & 12.1.1 to Access Contacts

While iOS 12 is arguably the best iteration of Apple's mobile operating system yet, one major fault so far is security. On Sept. 26, Videosdebarraquito discovered a passcode bypass that gave access to contacts and photos from the lock screen. Apple has since patched that security flaw, but Videosdebarraquito has discovered a new one that affects all iPhones running iOS 12.1 and 12.1.1 beta.