Hacks, Mods & Circuitry How-Tos
How To: Light Up Your Whole House with This DIY 'Nuclear Explosion' Chandelier
If you're the kind of person who misses the bright, sunny days of summer during the colder months, Michail has the perfect addition to your home. He built this "Nuclear Explosion" Chandelier that's as bright as daylight, so you can recreate the feeling of summer, no matter what time of year it is. It puts out 99,400 lumen (a typical 60W light bulb only produces 800 lm), so it takes quite a bit of electricity to run. Michail used 7 metal-halide lamps, which are much brighter and more energy ef...
How To: Add an Extra USB Port to Your Wired Computer Mouse
Ever try plugging in two flash drives into your MacBook Pro before? The USB ports on MacBooks are not only directly side by side, they're insanely close to each other, so it can be extremely difficult to plug in a large USB device with another smaller USB device. Sometimes it can fit, but it's a strain on the USB port and the device itself. If one of the items in question is a USB mouse, then your worries are over...
How To: Make Your Own Halloween Masks by Modding Your Shop Vac into a Vacuum Forming Machine
You may have never heard of vacuum forming, but you use products made with the technique all the time. The lid on your coffee cup, the plastic bowls you used at last week's barbeque, and the blister packs your prescriptions come in are all made with a vacuum forming machine.
How To: Repair or Replace Your Broken Headphone Jacks
If you haven't met a person that's broken a pair of headphones, you might need to get out more. No matter how expensive or cheap a pair of headphones are, the sound can get buggy, the wire can get cut, or the headphone jack itself can be broken or ripped off the cord. But instead of buying a new set of headphones or borrowing the ones from your cousin with the earwax problem, you can easily fix it yourself.
How To: Mod Your Old iPod 30-Pin Dock into a Bluetooth Speaker for Your iPhone 5
If you bought the new iPhone 5, you've probably been less than thrilled with the lack of cases and accessories that you can use it with. Docks are no exception—users were disappointed to learn that Apple has no plans to even make one for the newest addition to the Apple family.
How To: This DIY Illuminated Isomorphic Keyboard Changes Colors as You Play Music
An isomorphic (or self-transposing) keyboard is "a musical device where a grid of notes is displayed to the user and the interval change between notes in constant for any given direction." For those of you who didn't grow up playing the piano like I did, that basically means that it lets you move between keys easily without having to learn new patterns because the keys are laid out so that a chord is the same pattern in every musical key.
How To: This DIY Job Search Light Lets You Know When a Worthy Job Opportunity Arises
The mighty Arduino microcontroller can be used to show children how robots work, it can be used to hack into hotel rooms, or it can be used to let you know when you've got a new job opportunity!
How To: This DIY Xbox LIVE Traffic Light Tells You When Your Friends Are Gaming
Games are always more fun when you have someone to play them with, but if you're not always logged in to your Xbox LIVE account, how do you know when your friends are online? You can always log in and check, but where's the fun in that when you can hack together a traffic light to do it for you? Andrew F hooked up an Arduino with an Ethernet shield to check every five minutes to see how many of his Xbox LIVE friends are online. For each friend, it records either a zero or a one, depending on ...
How To: Use Your "Dead" Car Battery to Power Emergency Fans, Lighting, and More!
A common misconception is that all car batteries die. This, in fact, isn't true—the majority of "dead" car batteries just don't contain enough juice to power a car, but they can still provide enough watts to keep emergency fans and lighting running, which is great when a power outage occurs. So, instead of lugging the battery to the nearest drop-off center or just letting it collect dust in the garage, you can put that car battery to good use.
How To: Mod Your NES Duck Hunt Zapper into a Real-Life Laser Gun
Who doesn't love Duck Hunt? It's arguably one of the most popular games ever created for the original NES system, even in spite of the mocking dog that everyone hates. I'm sure a lot of people still have their old controllers in the attic somewhere, so unless you're lucky enough to have an NES that still works, why not put that childhood nostalgia to good use?
How To: Forget Chimes—Make Your Doorbell Send You Text Alerts Whenever Someone Rings It
Want to know when you have a visitor, even if you're not home? You could always set up a security system and live-stream it with your iPhone. But if you don't have a spare iPhone, or just don't want to go to the trouble, this simple hack will add text message alerts to your doorbell so that it lets you know when someone's there.
How To: Make a Dynamic Mic and Sound Recorder Stand from an Old Hard Drive
There was a dynamic mic in my junk box, but without any stand or connection cable. I needed a high-quality microphone to narrate my project videos, so I had to think of a way to build a stand for the mic. This is what I came up with.
How To: Eavesdrop from a Distance with This DIY Parabolic 'Spy' Microphone
Want to find out if your neighbors are talking about you? You could always hack their webcam or turn your iPhone into a secret spy camera, but unless you have a key to their house, that could be tricky to do without getting caught.
How To: | 3 DIY Electronic Geek Chic Pieces for Him
Stand out from the high street fashion clones with stuff you’ve fashioned yourself. It’s easy to take old pieces of electronic junk and transform them into all sorts of fun ‘n’ funky geeky accessories. Like a totally useful tote bag, a what-on-earth-is-that wallet and a bedazzling belt. It’s terribly geeky but chicy too. Here’s how…
How To: Scavenge High-Voltage Components from Your Neighbor's Trashed Microwave
For this project, I decided to rip apart a microwave I found in my neighbor's garbage can to see what was inside. With permission, of course! True story!
How To: Cut and Sand Your Micro-SIM into a Nano-SIM Card for Your New iPhone 5
Planning on getting the iPhone 5, but want to keep your SIM card? The new nano-SIMs that manufacturers are adopting will be even smaller than the micro-SIMs that most of us currently use. It's fairly easy to cut a regular SIM down to a micro-SIM, but because the nano-SIM will be thinner as well as smaller than the micro, cutting it down to size will require a little more work. Photo by Tech Digest
How To: Deter Data Thieves from Stealing Your Flash Drive by Disguising It as a Broken USB Cable
Having a flash drive is more or less a must, but the biggest downside is that they often get stolen, and it's not hard to figure out why. They're small, so they easily fit into pockets, and a lot of people store valuable information on them. Want to pretty much guarantee no one takes yours? Disguise it as a broken USB cable like Windell Oskay of Evil Mad Science Labs so it just looks like a piece of junk to would-be thieves. The materials are pretty simple: a flash drive (the smaller the bett...
How To: Measure Who's the Drunkest (+ Avoid DUIs) with a DIY Arduino Breathalyer
Whether you want to use it to keep your guests safe or just to see who's the most drunk, it's always fun to have your own breathalyzer at a party. We've seen DIY breathalyzers before, like this one by Craig Smith, but how about an Arduino breathalyzer?
How To: Make a Powerful Handheld Rocket Launcher from PVC and Sprinkler Parts
Take everyday sprinkler parts and form them into a high pressure rocket launcher that will shoot paper rockets nearly 300 feet!!! It's cheap to make and a lot of fun!
How To: Moving Soon? This DIY Alarm Will Make Sure Your Stuff Stays Safe in the Truck Overnight
The worst part of moving into a new place is, well...moving. It's tedious, a lot of hard labor, and it can take forever, and don't even get me started on all those labels. It's also one of the only times in your life when everything you own can be stolen at once, since it's sitting in a movable container. Rather than risk losing everything, try this DIY Moving Truck Alarm System by Tim Flint that lets you know when the loading door is opened so you can catch would-be thieves red handed.
How To: Upgrade Your Old Stereo with Bluetooth to Play Music from Your Smartphone
Most of us have given up our big, bulky stereos in favor of smaller, sleeker models, but how many of us actually get rid of the old ones? If you don't like the idea of throwing out or giving away electronics you spent good money on, you can always upgrade them instead!
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...
How To: Disguise Your Gaming Addiction with This DIY Coffee Table Arcade Machine
Love old-school games like Pac-Man and Space Invaders, but don't have the extra space for an arcade machine? Get the best of both worlds (and save some cash) with this DIY Arcade Coffee Table built by Sam Wang. He started with just an ordinary IKEA table and drawers, then cut out a space for an LCD monitor. The controls (including joysticks!) are mounted on the drawers so that when they close, it just looks like a normal coffee table. Once everything was in place, he added a glass table top, ...
How To: Satisfy Your Need for Speed with This DIY Arcade-Style Racing Cockpit
Racing games are always better when you have a steering wheel instead of just a handheld controller. And those old-school arcade racing cockpits? Even better. Matthew Boyer decided to bring the feel of a racetrack into his living room with this insanely awesome DIY arcade racing cockpit. He built the frame out of plywood and a real racing seat, then added LEDs, surround sound, and a 32-inch flat screen. The pedals, shifters, and steering wheel are laid out to match the measurements in his rea...
DIY Portable Power Pack: Turn Your Backpack into a Solar-Powered Gadget Charger
A smartphone is pretty much useless with a dead battery. When you're out and about, it can be hard to find a place to plug in (if you remembered your charger, that is). But this DIY solar panel backpack made by electrical engineer Theodore Protasiewicz will help you use the scorching sun to your advantage and make sure that your gadgets are always ready to go. Theodore started with just a normal backpack, some solar panels, 18 gauge wire, and a USB port and hacked it into a traveling solar ch...
How To: Be the 'Light' of the Party with This DIY Flashing LED Suit
If you've ever been on your way to a party and felt that your outfit just wasn't flashy enough, engineering student 'Rambo' has got just the thing for you. His homemade LED suit lights up and dances to the beat of the music, and can even be controlled via Bluetooth.
How To: Geekify Your Business Card with This Custom PCB Résumé Flash Drive
Whether you're job searching, networking, or just giving your information out to someone you just met at a bar, this circuit board business card made by Brian Carrigan will make sure no one ever forgets meeting you! Sure, you could buy a customized USB business card on some online shop, but if you're trying to emphasize your geek cred, why wouldn't you make your own PCB card from scratch? Carrigan used a USB controller and added an Atmel AT45DB series flash chip so that it could store his res...
How To: This DIY Baby Monitor Uses Lasers and a Wiimote to Detect Your Child's Breathing
Proud new papa Gjoci wanted to make sure he never had to worry about whether or not his baby girl was breathing, so he built this amazing breath-detecting baby monitor using a Wii remote, a printed circuit, and a laser. First, he opened up the Wiimote and took out the camera, then used an Atmel Atmega88 microcontroller to make a printed circuit. Low-power infrared lasers shine on the baby's clothing and the Wii camera detects the motion of the baby's breath, activating an alarm if the motion ...
How To: Ditch Your Doorbell for This Front Door RFID Lock That Lets Whoever You Want In (Whenever You Want)
Hate answering the door, but don't trust your friends with a set of keys? This RFID front door lock made by Steve Pomeroy will solve all your party-hosting problems. It reads the RFID tags in his friends' public transit cards and decides who's allowed in based on "groups" that Steve defines. And I have to say, it's also rather stylish. It's controlled by an Arduino serial console and a custom Android app to add and remove cards. The reader can store 50 or 100 tags at a time and allows 7 diffe...
How To: Turn a Playing Card into a Super Simple Solar-Powered Battery Charger
You can do a lot more with playing cards than you'd think, like turn them into gift boxes, fling them like throwing stars, and make them levitate or disappear. You can even make them recharge your batteries. Instructables user Shawn Frayne was sick of having a bunch of dead batteries lying around, so he developed a cheap and easy way to always have a charged one within arm's reach by turning a normal playing card into a super simple solar-powered battery charger for rechargeable AA and AAA ba...
How To: Make a Virtual Private Network
Stay secure on public wireless networks by making your own FREE virtual private network (VPN). This tutorial shows you how to set up an OpenVPN server and connect to it from your laptop.
How To: Hack Your Old Computer Mouse into Retro Wireless Bluetooth Mouse!
Since most devices these days are mobile and wireless, a lot of people have a bunch of old hardware from a decade or two ago sitting around unused, just wasting away in dusty boxes. Look familiar?
How To: Build Night Vision Goggles with a Car Backup Camera and Monitor
Night vision goggles are awesome, but the price? Not so much. Luckily, you can make your own pair that will have you sneaking up on your friends in just a few simple steps.
How To: Make Your Own Propane-Fueled Cotton Candy Machine at Home
Cotton candy is a treat generally reserved for carnivals, fairs, and other events that don't come around often enough. Through some clever construction and about $45 in materials though, you can have all the sugary substance you could ever want with this awesome DIY cotton candy machine. All you'll need to construct your own are two dollar store stainless steel bowls, a fan motor, a few odd screws and bolts, a drill, and a propane torch. Check out the tutorial video below. As an added bonus, ...
How To: Build Your Own Kinect-Like 3D Tracking Interface with Cardboard, Foil, and Arduino
Back in 2008, media artist Kyle McDonald created a 3D interface that could track movement, which he turned into a virtual Tic-tac-toe game.
How To: Make EXTREME LED Throwies
LED throwies are cheery glow-dots you can make in seconds from simple components and stick to any ferro-magnetic surface. But that's just the beginning — here's how to hack and modify them.
How To: DIY Pulsating Light Rod Speakers That Dance to Your Music
If you've found your speakers to be lacking in the visuals department, this is just the mod for you. Using 3" PVC, you can turn your speakers into light-up glow rods that pulse to the beat of your music. You'll need some electrical skills and experience soldering to get this one together, but otherwise it's not all that complicated. The main components you are going to need are speaker drivers, PVC pipes, LEDs, and the necessary cabling for those devices. The device works best with higher vol...
How To: Block RFID Signals, Build an RFID Reader Detector, and Make Custom RFID Tags
RFID chips are everywhere. They're in passports, credit cards, and tons of items you've bought in the last 5 years or so. Big retailers like Walmart started using tracking products with RFID as early as 2004, and today, they're used in everything from mobile payments to hospital record systems. Chances are, unless you're a hermit (in which case you wouldn't be reading this anyway), there's an RFID tag within a few feet of you. Photo by sridgway
How To: Customize Your USB Keyboard with a DIY Illuminated Base with Built-In Phone Stand
I've never really liked to type on a flat or low keyboard. Even the small flip-up stands underneath most keyboards were not good enough for me, as those little legs aren't usually more than 2 or 3 centimeters high. I'd like a minimum of 5 cm, so I decided to make this keyboard base for myself. Aside from giving me the right height and angle, this DIY keyboard base also features LEDs that light up my monitor, the table, and gives a nice background to my desktop. It's even got a built-in stand ...
How To: Place Your Electrical Socket Safely in the Wall If It Was Pulled Out
Hello! This post is about the electrical socket. Imagine that somebody pulled the cable out of the possible protection outlet too fast? The result can be seen on the following photo. What to do next? Step 1: Preparation