Interested in getting 1.5-volt button cell batteries for pennies on the dollar? Kip Kay, of Make Magazine, is here to show you how. The trick is to buy Energizer A23s, each of which contains 8 1.5-volt button cells. For detailed instructions on this straightforward money-savin ...more
Learn how to charge a 12 Volt Battery using a Solar Power Battery Maintainer by watching this how-to video. This method can be used to charge 12 volt batteries of any kind - cars, trucks, boats, motorcycles, tractors, lawn equipment - any kind of 12 volt battery you can think of!
This video is revelatory. Here is the good news. If you have devices that rely on 1.5 volt button cell batteries, this tutorial from KipKay will save you $40.00. Here is the bad news. Now, I am just angry at big business. Duracell. Energizer. You really suck. Hack a 12-volt ...more
In this case modding video tutorial, you'll learn how to install a cigarette lighter-style 12-volt accessory outlet into a PC case. Charge your cell phone and other accessories directly from your case with the hack outlined in this video. For detailed, step-by-step instruction ...more
With all the little gadgets people carry around these days, those little cigarette lighter outlets just don't cut it for in-car power sources anymore. Unfortunately, that's often the only option our cars and trucks come with. While you are waiting for the car companies to cat ...more
The XBox 360 is notorious for it's inability to stay cool and the many fatal errors that that has caused. This video will get you one step closer to solving the problem by showing you how to install a 12-volt fan mod in your console. This will make it a little bit louder, but ...more
The XBox 360 runs hot. Really hot. And that is never a good thing for a computer. In fact, it is responsible for the infamous Red Ring of Death that has become synonymous with the XBox 360's poor build quality. This video is here to help solve the problem. It will teach you ho ...more
If you own a VW Beetle Bug, listen and watch. In this tutorial, you'll find out about everything you need to know about the car's voltage. Whether certain myths are true and how to convert a Beetle that has only 6 volts, into one that has 12. So pay attention, take notes, and ...more
Tesla coils are totally insane, yet undeniably captivating. And they can be used for many things, from electric painting to dueling musical battles. But one trigger happy fellow has a different use for Tesla's lightning shooting coil. A weapon. After being inspired by the ste ...more
Snowflakes aren't much to look at during a storm, but when you look real close, you can see just how marvelous they really are. But winter is over and most of us can no longer enjoy the intricate nature of ice crystallization, unless you're sticking your head in your freezer. ...more
Want AAA batteries for cheap? Learn how to hack a 9-volt battery with this money-saving video tutorial from Make Magazine's Kip Kay. All you'll need to replicate this hack at home is a pair of needle-nosed pliers and one or more Energizer 9-volt batteries. For instructions on ...more
Sometimes the best way to hide things is in plain sight. Whether you're trying to sneak some medication past security at a concert with a zero-tolerance policy, or you're just worried that maybe Omar comin', YouTuber MrGear has a clever way to put your mind at ease. In the vi ...more
Find out how to use a six volt lantern battery to really save you money. This is no con, or prank, or joke that involves 32 AA batteries; this is the real deal. Just watch this money saving video tutorial to see how to hack a six volt battery. You can easily replace a few of t ...more
If you're out in the wilderness at night and it's starting to get chilly, you sure as hell better know how to make yourself a campfire. But let's just say you forgot your matches and don't feel like rubbing two sticks of wood together hoping to create a spark. If you have a 9 ...more
In this clip, learn how to make super powerful 9 volt LED flashlights using things you most likely already have around the house. You will make these mini-lights out of things like batteries and scrap wires. So, dig around in your garage and see what you can find to get starte ...more
Learn how to make a magical looking fire with steel wool and a 9 volt battery.
Mr.G shows you an experiment in which you can create pulse DC current (which mimicks AC current) from a nine-volt battery.
Wish you could make the shift to electric or hybrid, but you can't afford it? If you've got more than a few free weekends on your hands, you may want to consider undertaking Benjamin Nelson's ambitious (to say the very least) car conversion project. First, Nelson outlines in ...more
Hide your money, small candies or other tiny items you want to keep hidden! Pry off the top of the battery, take out the innards and then rebuild the casing to re-camoflauge the battery. Then you're ready to hide your goodies!
Change a normal 9v battery into a life saver. If you have ever run out of juice on your phone and could really use a quick charge then you need a USB battery. list: 1 5.1v zener diode 1 330-ohm resistor 1 9v battery connector 1 9v battery solder and soldering iron (you can ge ...more
Materials needed: Altoid mint tin, 9 volt batter and connector, switch, 7812 voltage regulator, 12 volt computer fan, carbon filter and 2 pieces of screen. Wire the battery connectors. Solder all of the following: Negative connector to the switch, wire to the switch, ground wi ...more
Building a DIY Alarm System: The Concept So, you want to protect your property, or maybe a room, car, or even your backyard. The concept of an alarm system is to notify the "alarm administrator" that there is an intruder entering the previously designated boundaries. The trig ...more
In this how-to video, some children demonstrate one of the techniques for starting a fire when you don't have a lighter, matches, lighter fluid, or anything like that. Here we see how to start a fire using just a 9 volt battery and some steel wool. TO start a fire using just a ...more
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.
Build your very own Trek-style Blu-Ray laser phaser with this hacker's how-to video from Kip Kay of Make Magazine. To replicate this hack at home, you'll need the following materials: (1) a PS3 Blu-Ray laser assembly (which can be had on eBay for roughly $45), (2) an original ...more
This video shows you how to make a prank toy called "The Evasive Beeping Thing." You will need: a 555 timer, a couple of 3904 transistors, a couple of capacitors, some resistors, a 9-volt battery clip, a small speaker, and a small piece of circuit board to settle everything. F ...more
Microcontrollers are great. You can do anything from water your garden to catch wildlife trash diggers in the act—and on the cheap. I prefer to use the Arduino microcontroller because of the large and helpful community built around the website. Though it is my favorite, there ...more
Even if you live in a big city, chances are you have some wild raccoons or foxes that cannot abide a vertical trash barrel. While apparently omnipresent, these phantasmic critters usually vanish in the night leaving only a shameless trail of refuse you never wanted to see ever ...more
Steve of Element Tattoo Supply demonstrates how to set up a tattooing power supply, specifically the Silver Bullet model. It has a voltage switch on the back. If in the US, set the power supply to the 115-volt setting. Outside the US, switch to the 220 volt setting. There are ...more
In the following video, I demonstrate how to create a device capable of charging the body of anyone who wears it with static electricity, allowing a powerful shock to be discharged into anything that is touched. This grants the wearer the ability to do some pretty amazing thin ...more
Computer viruses are terrifying. They are undetectable, dangerous, and operate constantly right under your nose. For the average computer user, there are only a few repair options. You could buy expensive antivirus software that causes more problems than it fixes, you can wipe ...more
So, your children have the same old boring Fisher-Price Power Wheels that all the other kids on the block have. Do you really want your child to be like all of the rest? No, I didn't think so. Turn those miniature Power Wheels, Dumar or Peg Perego vehicles into a little bit of ...more
I love making beeps and bloops with the Arduino pitches library, but sometimes archaic 8-bit tunes just don't cut it. Whether you want your robot to terrify your enemies with a demonic synthetic voice, you just need a pocket boom box on the go, or you want to a miniature guita ...more
It turns out that the popularity of soft circuit electronics has leaked out of the interwebs and into the hands of the U.S. military. Soft circuit electronics allow you to literally sew electronics circuits into fabric using flexible conductive thread instead of wire. Soft cir ...more
Charge your cell phone, mp3 player or other USB-equipped device with the power of the Sun! All you need is a 6-volt solar panel and a female USB cable. Solder them together (this video demonstrates how), and then you have a solar powered USB charger!
The XBox 360 has mammoth cooling problems, and people have devised all manner of products and mods that address that. This video will show you how to install one of those products: heat sinks that will cool your motherboard directly. This will keep you XBox a lot cooler withou ...more
Garden of Imagination demonstrates how to make a real working miniature chandelier light for a doll house. We need some cord wires, beads, an electric bulb of 12 volt and plugs. Take the cord connected to a plug and remove the metal tips and remove the plugs. There will be tw ...more
If you're a geek, then this power pack will give you a total techgasm. The power pack allows you to charge pretty much anything you can fit into a 12 volt power jack in your car (where the cigar/lighter receptable goes). The power pack is a portable battery, so no need for cha ...more
Create a miniature hover craft from the fan, polystrene or Styrofoam plate, batteries and double-sided scotch tape. It really works. Powered by two 9 volt batteries you can use paper plates for the body of the hovercraft if need be. This is a cool cat toy or just a household h ...more
Save tons of money by building your own LED pen that works with a multitouch smart board / whiteboard. You'll also need a WiiMote (Wii Remote) to use in conjunction with your homemade LED pens that you'll be making in this video. To get started with this awesome project, you'l ...more
This video demonstrates the relationship between electricity and magnetism and shows how to construct an electromagnet using a 4 inch iron nail, 5 meters of copper wire and a 1.5 volt AA battery. Electromagnetism was discovered by the Danish scientist Oersted. Electromagnetism ...more
As some of you Mad Science readers will remember, we recently covered the separation of water into hydrogen and oxygen using electrolysis. Passing a current through water can rend it apart, but we can also recombine that oxygen and hydrogen to make electricity! This is the pri ...more
In this article, I'll be showing you how to make a simple yet effective static electricity generator. Basically, this device allows you to carry a constant static charge on your body and discharge it on anything grounded or of opposite polarity. The electricity generated is ar ...more
Know how some people have a natural way of lighting up a room? Well, hacker i-am-jen has an artificial one—LED sneakers! Powered by a pair of 6-volt batteries and two teeny-tiny RBBB Arduino microcontrollers, the shoes offer a high-tech, DIY spin on the mass-market L.A. Lights ...more
Zero chance of your ride being jacked with this level of protection. You will need: a 100,000 volt tesla coil strapped to the roof of your vehicle. Created by tesla master, Peter Terren. Previously, Electrifying Transparent Tesla Coil (DIY!!) Iron Man Played with 1,000,000 Vol ...more
Your car's electrical system is massive and complicated. Trying to find a short in the system might sound like a job for a professional, but in this video you will learn how you can use an $8 test light to locate a shorts in your car's electrical system. It will also teach you ...more
If you're doing any sort of electrical work at home, a multimeter is an invaluable tool to have. But as invaluable as it is to have a volt/ohm meter, it is obviously even more invaluable still to know how to use one. And, with this electrician's how-to, you'll learn how to do ...more
Ever thought your flashlights weren't giving out enough light? Well, change that; watch this video tutorial to see how to make the world's brightest LED flashlight. You will need a vohm meter (volt-ohm meter), wire, thermal paste, a Dorcy flashlight, a soldering iron, and a 90 ...more
Ever wonder what happens to a penny when an electrical charge is applied to it? Well, you'll find out in this science lesson that shows you how to dissolve a penny with a power adapter. You'll need a 12-volt power adapter, a bolt, about 50 grams of salt, an alligator clip (or ...more
Take apart a 9V battery and turn it in to Six AAA batteries. This way you save money. amazing science experiment trick. This is a simple battery deconstruction that results in a 9 volt battery's dissection into six AAAA batteries. They are not AA or AAA, but a kind you won't f ...more
Make a $100 super bright cop flashlight for less than $10, as shown in the steps of this how-to video. This flashlight is brighter than a Surefire and is so easy to do. You will need a compact flashlight, a Krypton flashlight lamp, a file or drill bit, and 3 volt batteries. Wa ...more
Forget the sticks and drop the matches, Joe Kelley shows you the easiest way to start a fire in the woods: steel wool and a battery. All you need to do is touch the volt battery to the steel wool. Watch this video camping tutorial and learn how to start a fire with steel wool ...more
Build a fire without matches or a lighter so you wont freeze to death or attract predators in the wild. The finer the steel wool, the better. Most batteries will work but 9 volt batteries are the easiest.
This is a tutorial for how to use a multimeter to take volt and amp measurements of a silicon solar cell and solar modules.
Gary explains the voltages present on the pitch bend pot and how to determine it is working correctly. Use of a volt ohm meter is explained in the process.
One thing the whole Internet can agree with is that cats are cute and (sometimes) cuddly. But what those endless cat videos you find yourself watching for hours on YouTube don't tell you is that cats stink. While cats aren't the source of the smell, owning a cat means a stinky ...more
Hand made air conditioner made of a foam lunch box, 5 volt DC fan, 4 AAA rechargeable batteries, and some ice. This homemade AC can run on batteries and you can plug directly into any USB port. Video: .
Connecting to your headless Raspberry Pi on the go typically requires a network connection or carrying around bulky peripheral hardware like a screen and keyboard. With the help of an old-school connecting standard, though, you can log into your Pi from any computer using a si ...more
Science-fiction writer Jules Verne predicted many scientific breakthroughs, including the moon landing, tasers, and nuclear submarines. In his 1874 book The Mysterious Island, Verne writes: I believe that water will one day be employed as fuel, that hydrogen and oxygen which ...more
Around the world, X-People (yes... there are X-Women, too) are under attack from an intolerant sapiencentric ruling class. Integration without equality is a farce. Autonomy is denied outright. Human prejudice cannot abide a mutant state. Human fear, born to hate, imposes itsel ...more