Low Voltage Search Results

How To: Make A High-Lighter Stun-Gun

The Stun-Gun In this article, I'll show you how to make a small, weaponized highlighter. Before I get into how to built this device, let me warn you. This device is harmful! When used, it can cause burns and/or serious muscle spasms. The voltage is potentially deadly! DO NOT attempt to build this device unless you are experienced with safety, electronics, soldering, and understand circuit schematics.

How To: Create a Bump Key to Open Any Door

Lockpicking is a skill that takes years upon years to master. Locks come in all sorts of shapes and sizes, but have common ground in how they work. Most cylinder locks have "tumblers," which are metallic cylindrical objects that sit vertically to the actual locking mechanism. Tumblers have five or six holes with rounded key pins of various height in them, each needing to meet an exact height or the cylinder in the center (the lock itself) will not be allowed to turn. This is the reason why yo...

How To: Setup an Asterisk Server

Over the years, I have enjoyed playing with Asterisk. I have found Asterisk to be extremely powerful and fun to play with. There are several books and many scattered how to articles out there, but most are outdated and the information required to build Asterisk from beginning to end can be a bit daunting. I wanted to combine all the steps into a single article and share my experience with everyone. If I have left out any steps please let me know.

News: Saturn V Rocket 1:1 Scale

Hi, all! After building my 20:1 TARDIS, I wanted to build another spaceship, but this time, I wanted to build a real one. I wanted it to be a well-known rocket, but more importantly, I wanted it to be a huge rocket.

News: Make Insulating Glass Conductive with a Blowtorch!

Have a few light bulbs and a blowtorch? Then join the folks over at Harvard in a cool science experiment on the conductivity of glass. As you well know, glass is an insulator with low conductivity and high resistivity. In the video below, they flip the switch, demonstrating how heating the glass fuse enclosure from an incandescent light bulb can create a conductive material that completes the series circuit and lights the second light bulb. In the video, the two light sockets are wired in ser...

News: Photos of Mercury and the crescent Moon

Tonight, I saw Mercury for the first time. Mercury is a hard planet to see, even though it is quite bright, because it's orbit is so close to the sun. The angle Mercury makes with the Earth and the Sun is never more than about 25 degrees and most of the time it is much less. As a result, you can't ever see Mercury during the night but at a couple of times in it's orbit you can see it at either dawn or dusk. Right now, Mercury is close to it's greatest eastern elongation and can be seen low in...

How To: Make a Prank Stun-Baton

In this article, I'll show you how to make a portable prank stun-baton. Powered by static electricity, simply charge up the baton, and discharge it for a static surprise. The concept behind this device ties in with Leyden jars, and their tendencies to retain static electricity.

Edit on a Dime: The Week Ahead

Happy Monday to all of you out there, thankfully the Consumer Electronics Show is now behind us. It feels quite possible that a cold was caught by yours truly simply by reading the numerous reports of germs being spread from booth to booth on the show floor. I'll do my best to soldier on, in the meantime if you haven't already, you can experience the convention vicariously by reading my 'Best of CES' post here.

News: The Best of CES

This year's Consumer Electronics Show is nearing an end so of course it's an occasion for the 'best of' lists. To save you time I thought I'd compile my 'best of' the 'best of' lists.

Wheels of Steel: A Virtual Turntable in Your Browser

Wheels of Steel is a virtual browser-based turntable emulator created by Scott Schiller, a Canadian developer who works on Flickr at Yahoo. This project will appeal to those who A) dig turntablism and B) are knowledgeable in web development. I know nothing of the latter, but from what I can tell, Wheels of Steel appears to be significant because unlike its predecessors, it employs CSS3 instead of flash. Since I'm not familiar with the topic, here's Scott on the history and technical details o...

How To: How Area 51 Fooled the Soviets with Fake Spy Planes

Area 51 is the most secretive military base in the United States, a base that U.S. government officials to this day still barely acknowledge because of its top secret development and testing of experimental aircraft and weapons systems. But a slew of Cold War-era documents have finally been declassified, and National Geographic has discovered a rather low-tech method the military used to hide its high-tech prototypes.

Creator Spotlight: Matthias Wandel, Prolific Woodworking Machinist

You've seen his explanation of a combination lock's inner workings. You'll never lose another game of Jenga, thanks to his winning wooden pistol. And nearly 4 million YouTube users have marveled at his wooden marble machine sculpture. He's Matthias Wandel, and he's accomplished what most only dream of—turning a hobby into a career. Matthias has been tinkering in woodworking since he was a child, with unrestricted access to his father's workshop, permitted to use power tools unsupervised from ...

News: EL Wire Basics

EL Wire is a bit tricky if all you want to do is glow. But there's a lot to know about the technology, as well as helpful information to get you addicted to it. EL Wire is a thin copper wire that gives off a beautiful glow when an electric charge is applied. There are 10 colors of EL Wire, and each wire has it's own unique characteristics. Typically EL Wire is used for safety as well as costuming. It has such a low power point that it can run off as little as watch batteries to make it glow!

News: Make a Spoon Disappear

If you're willing to shell out for a mind-blowing party trick, here's another great one to add to your repertoire. Unfortunately this isn't a dirt cheap junk drawer DIY—you'll need a $40-$60 gallium kit (which doesn't include the spoon mold). What is gallium, you may ask? An amazing, man-made metal which melts at the low temperature of 86 degrees Fahrenheit. Plunk your trick spoon into a cup of hot water, and amaze. According to the Department of Energy, it's safe to handle as long as you don...

YouTube Phreaking: How to Extract a Phone Number from a YouTube Clip

Every key on a telephone keypad has its own sonic signature, a sort of calling card composed of two distinct tones: one high, one low. While it's easy to tell the difference between the individual pitches in a single row—see, for example, this article on using your cell phone as a musical instrument—, it's often difficult to differentiate between notes within the same column. Unless, of course, you outsource the work to a computer! Which is what Uruguayan hacker [Charlie X-Ray] recently set o...

News: Under cutting door jambs with a hand saw, before installing laminate flooring

If your installing your own laminate flooring, you may need to under cut some door jambs. Cutting your own door jambs with a hand saw is the least expensive way. You can rent or purchase an electric jamb saw if you prefer. In my opening photo is a door jamb hand saw, which can be purchased for under 20.00 at the big box stores. When installing laminate flooring the laminate needs to be able to slide under the door jambs so it appears that the door jambs are installed on top of the laminate fl...

How To: MoMA Pisses Off Internet Artists (Here's How to Get Back at Them)

Aram Bartholl over at F.A.T. is pretty pissed because MoMA is discriminating against internet artists. As most New York-based working artists know, MoMA offers annual membership for only $35 (compared to the standard rate of $75) to artists who can provide "credentials" that prove legitimacy. Though the offer isn't publicized on the MoMA site, word on the street is "credentials" equates to "a letter from the gallery or an announcement for one of the artist's shows within the past two years" (...

News: Wedding Ring Inscribed with Voice Recording

Well, here's a darling idea if there were one. Best not to consider the implications of making a low-fidelity promise of eternal love, of course. But, really, just darling: Working with a jeweller and the vinyl record manufacturer Dubstudios, I created this engagement ring for my partner Shelina. The ring has a 20 second recorded message (my proposal) etched onto it's surface and can be played back with a miniature record player.

HowTo: Dumpster Dive For Gold

Dumpsters make great swimming pools and skateboard ramps, but when they're full of trash, they're pretty valuable, too. You can get a surprising amount of free booty dumpster diving. If you're a penny pincher who values low cost (re: free) functionality, check out Apartment Therapy's guide to mastering the craft. Below, my three favorite insider tips.