Hacks, Mods & Circuitry: Page 19

This video tutorial from OzLabs will show you how power the one-watt high powered LED using 120 volt source using a 12 volt adapter.

Hack your webcam into a magnifier by adjusting the focus lens

Don't throw out those old components. Here's how to make a USB-powered fan out of old computer parts.

With a little circuitry, you can find exactly what you need to make a very "cool" USB powered Mini Fridge. Just check out this how-to video. This cooler is perfect for keeping your drinks cool while gaming or at the office. Watch this video tutorial and learn how to build a USB mini fridge.

I show you how to hack your old keyboard to make a wallet in minutes.

This week, Windell Oskay of Evil Mad Scientist Laboratories joins me to teach you how to make a super clever little circuit called the Joule Thief! The Joule Thief allows you to squeeze the life out of what most people think of as "dead" batteries!We were inspired by Big Clive to make this project and it's the perfect platform for a flashlight, book reading light, or really just something you should make to g et more use out of your batteries!

We've got half a day of wiring to build the Wireless Access Truck out of an EVDO modem, a Wilson Electronics Cell Phone Booster, a 12V Mini ITX PC and a WiFi adapter... Hit it.

Car + Hydrogen = Better Mileage? We're not quite ready to drop the cash on one of those under hood mileage boosters being sold all over the web...but using water electrolysis to produce Hydrogen sounded like a good first step!

Calculating resistance and power isn't hard... and, as David explains, knowing Ohm's Law and the Power Triangle can be darn useful when you're designing a project, sorting out power supply issues, or want to keep from burning your car down.

Take a peek at the tools and equipment Patrick Norton and David Randolph have acquired over the years as they walk you through the must have gadgets every geek should have on their workbench.

Watch this video to learn how to hack together your own Jacob's Ladder optical illusion cassette tape toy.

Watch this video to learn an easy and inexpensive way to make an iPhone headphone adaptor. Once you make the adaptor, you can use any set of headphones or even a car input jack.

Here's how to electrocute a hot dog Redneck style, in under 30 seconds. You need a power cord, some nails and a hotdog to cook or rather heat the meat. This also works with sausages. Be careful, electrocution kills!

Make your own simple laser light show using a laser pointer and a sub woofer.

Watch and learn how to make this awesome DIY toy car that runs off solar power. This makeshift mini-vehicle is made from a plastic bottle, small motor, tires, supports and a solar panel. See if you can replicate this interesting solar toy, or see if you can come up with a better and cheaper design!

Mice, cute as they may be, are an unwelcome visitor in many a home. This video tutorial provides step by step instructions on how to hack a wireless electronic laser mouse trap from an automatic garage door opener and a computer mouse. Find out where those little pests are going. Watch this video tutorial and learn how to build a laser motion detector mouse trap.

This how-to video offers step by step instructions for how to build a stainless steel hydrogen generator for $15 dollars. You will need six stainless steel outlet covers with weather seal, 4 screws and nuts, 12 nylon washers and silicone. Learn how to make this hydrogen generator by watching this instructional video.

This Video demonstrates how to install multi channel (4,8,16) power supply for security camera and CCTV installation.

TOUCHPAD HACK - This video tutorial shows how to transform a touchpad into a useful mini graphics tablet with some simple, everyday items. You will need a 1.5V battery, a small ball bearing, and a Philips head screwdriver. Watch this video tutorial and learn how to transform a touch pad into a miniature graphics tablet.

Transform your old stereo cabinet speakers into a secret, lockable safe.

Build an old static electricity capacitor which will shock the electricity of your TV or computer screen. The full discharge of this Leyden jar can be deadly. Make it smaller if you want to try with your kids.

This android can talk, listen,and, with some tuning with a voice recognizer software, it will open and close many different applications.

F for FAKE. This video has been labeled a "Faux-To". Commonly contested as bogus science, we believe this video to be a hoax. What's your opinion? Comment below.

Build a machine that will cool beer in as fast as 6 seconds using an Airduster can of compressed air.

How to make your own "PS3 6-axis controller" style BASIC-programmable USB device.

Directions on creating a LAN cable with an RJ45 cable

Learn how to make a sign using a large perforated board and about 50 LEDs. Looks awesome when it's complete, great for parties!

It may be intended as a toy, but this gizmo can be hacked for more than just watching a remote-controlled car's video spy cam. This HUD (heads-up display) comes with the Wild Planet Spy Gear Video Car, but it's said that you can purchase the video headset separately. And it's not really a HUD, because you can't see through the video images, but it's close enough to be handy for all sorts of things, like computers, iPods, robots, wireless cameras, and gaming. Who wouldn't like to Call of Duty...

We'll base the project around a digital clock radio and a light gun for gaming; huge selections of both of these are available inexpensively second-hand, with many beautiful and well-designed examples. To enable our FPSI (First Person Shooter Interface), we'll outfit the gun with five tilt sensors, arranged at different angles on a small circuit board. A cable tethers the gun to the clock and carries your tilt and trigger signals to the clock's time and alarm control button contacts.

This is a long form tutorial on exactly how to disassemble the disposable camera to make a shocking taser. Make a tazer or taser using simple things at like a disposable camera and some simple hack sense. This prank is great to pull on an unassuming friend.

This video shows you how to make an Altoids tin can USB charger for your ipod. Be patient, these guys are apparently learning as they go, but you'll eventually get it.

These are two gun designs that can be used with the wiimote. Both are pretty easy to make, and modify. Let me know what you think.

Time flies. Particularly when it's projected. The magical box in this how-to uses light and mirrors to project the image of a working clock face on any wall. To build your own working clock projector, you'll need the following materials: a mirror, a jeweler's loupe, a clock and a flashlight. For detailed, step-by-step instructions on the assembly process, and to get started on this Daliesque hack yourself, take a look!

This hack with a USB fan uses activated charcoal to clean air of harmful smoke. Now you can have a cigarette while using the computer and not worry about smoking up the room.

Wondering how to most effectively combine ice cubes and a simple USB-powered computer fan into a fully functioning air conditioning system? In this video tutorial, you'll learn how to hack a coffee can and USB-powered fan into a simple, but effective, air conditioning unit. For detailed instructions on hacking together your own tin-can AC unit, watch this über-short how-to.

Use a few simple household items to make a flashlight powered by you computer through the USB port.

As any informed PopSci reader will know, the iPhone is definitely a game-changing piece of hardware, but it's not without its problems. Chief among those nagging little imperfections, for me, was the recessed headphone hack that rejected any headphones but Apple's trademark gleaming white buds. Apple's 'phones aren't that bad, but my Shure in-ear pair is better for blocking out noise on the subway (and my Grado SR60s are better for listening at home). Thankfully, an easy solution to this...

Ah, the alluring glow of the LED light. Whether you're looking to create a bit of romantic (albeit extremely geeky) ambiance, or you just want to have some extra emergency lighting around the house, a set of mini LED candles is a great thing to have. They also happen to be quick, easy, and cheap to make yourself. In this video, executive editor Mike Haney demonstrates how to do it.

Tired of touch-tone hell? Get human with our cool phone hacks and cheats with the tips from this how-to video. Become a life hacker - we'll show you how to find phone numbers, cheat the computer and hack the call center system with our hacking tools. Watch this video tutorial and learn how to hack a call center telephone system.

A tutorial demonstrating how to clean a green laser pointer lens and the equipment you should use.