Hacks, Mods & Circuitry How-Tos

How To: Make an infrared heart sensor

This video shows how to create an infrared heart sensor using an Arduino controller, a couple of resistors, and an infrared light emitter and detector. This device will be used on the subject's finger, detecting the amount of blood which is flowing through the subject's finger. The amount of oxygenation of the blood is shown in the finger, which will cause the infrared light to reflect off the skin and to the transmitter which is close by. The fluctuations of oxygenation are picked up by the ...

How To: Build a Mini Altoids BBQ

Instructables user vmspionage demonstrates how to make a tiny bbq grill with an Altoids tin "powered by a standard-sized charcoal briquette and capable of cooking a full-size hot dog (cut down to size) or smaller hamburger patties with ease." Impressive design and execution. You Will Need:

How To: Pull a "Virus of Doom" prank

In this video, we learn how to pull a "virus of doom" prank. once you have this downloaded, you can place the program into your start menu. Then, when someone else clicks on it they will get a large skull on the computer. It will say that the hard drive is formatting and the hard drive has been erased completely. You can download this link at http://householdhacker.com/content.php/130-Virus-of-Doom-Prank-Download. Once you download it, you will see what the icon looks like, then place it on y...

How To: Record your screen in OSX Snow Leopard

In this video, we learn how to record your screen in OSX Snow Leopard. First, you need to have QuickTime 10 installed on your computer. Now, go to "file", then "screen recording" in QuickTime. After this, you can right click and change the settings that are on it, if you want to use your microphone and if you want the screen to record. When you are ready, click the record button and it will start to record. To stop it, click on the top of the window and press "stop recording". After this, you...

How To: Install Steam games on a Mac without Windows

In order to install steam games on a Mac without Windows, you'll to download the Crossover application. After you have the Crossover software, place the CD in your hard drive. Click on "Install Unsupported Software, after you highlight it in the list. Click "continue". Rename the bottle. Click on create. Click continue. Follow the install wizard through, accepting the terms and clicking "next". Register your product ID, if you haven't already done so.

How To: Construct a simple magnet and battery powered homopolar motor

Motors. The word screams of complexity. They're everywhere and in everything, from car engines to airplanes to toys and electric wristwatches. But sometimes the most complex things can be really simple, as in the case of the homopolar motor, where the main point is a magnetic field. The only items you'll need to make a DIY homopolar motor are a AA battery, copper wire and a rare earth neodymium magnet. This tutorial will show you how to build this simple motor.

How To: Extract a spy quality camera & mini-DVR from a Barbie Video Girl fashion doll

Barbie has joined the espionage community, in the form of Barbie Video Girl, and it's time for you to interrogate her to extract those military-grade secrets she has stored in her spy equipment. That's right, Barbie is now equipped with a fully functional digital camera and mini-DVR (digital video recorder), with 256MB of internal memory, which equals roughly 30 minutes or video recording time.

How To: Build a portable personal heater

In this video, we learn how to build a portable personal heater. This is a great weekend project that is easy to make and will keep you warm during a freezing winter. You will need: two double a batteries, charger, twin double a battery charger, winding wire, and balsa wood. First, cut the wood the size of the battery holder and cut it out. Now, reel off 30 ft of winding wire and hold down with duct tape. Wind the wire around the piece of wood and tape down the other end of the wire. Scrape o...

How To: Root your G1 or MyTouch 3G with one click

In this tutorial, we learn how to root your G1 or MyTouch 3G with one click. First, go to theunlockr and download the MyTough 3G Root video. Now, go on your phone and click on the settings. Go to applications, then check "unknown sources", then go back and click on "sd card" and un-mount it, then format it. Once the numbers pop up again, it means your card is mounted and formatted. Now, plug your phone in with the USB cable to your computer and mount it. Now, go to the site and download the t...

How To: Make the world's loudest alarm clock

In this video, we learn how to make the world's loudest alarm clock. If your alarm clock does not wake you up, this is for you! First, you will need to take apart your alarm clock and find the wires that are connected to the tiny speaker that is inside of it. After this, grab two very large horns that have enough decibels to wake you up. Now, find an old 12 volt ac adapter and solder two wires from the adapter to the spot where the alarm sends signals to the alarm clock. Now, test out your al...

How To: Jailbreak ANY iPod Touch, iPhone, or iPad on ANY Firmware!

www.jailbreakme.com has recently created a new way to Jailbreak any iPod Touch, iPhone, or iPad, regardless of the firmware it is running. It is EXTREMELY easy! If you were thinking about Jailbreaking, but were afraid you did not have the technical abilities to do so, now you can! What is "Jailbreaking?"When someone says that their iPod, iPhone, or iPad is "jailbroken," they mean that they have installed Cydia, a third-party app store.Why Jailbreak? Why not just stick with the original App St...

How To: Solder with a soldering iron

In this tutorial, we learn how to solder with a soldering iron. You will need: tinning pads, desoldering braid, and an adding component. Start off by heating the copper, before you add the wire. You need for the acid to flow from the core onto the copper to create a surface that will accept the solder. A cold solder will break or cause burn. If you use too much solder, use the braid to remove it. Next, place the wires onto the holes and heat them onto the circuits where you want them to be pl...

How To: Use your Mac's screen as a gaming display

In this tutorial, we learn how to use your Mac screen as a gaming display. First, you will need to plug a USB cable into your computer that also has a source to place in a cable to your television. After you have connected these, the program will start automatically. To change this to view on your computer, change the controls to go onto your computer instead of the television. Now, turn on your game console and you will hear the start up noise on your computer, then see the game load onto yo...

How To: Fix 1600 errors when Jailbreaking 3.1 firmware

In this tutorial we learn how to fix 1600 errors when jailbreaking 3.1 firmware. First, make sure your iTunes is updated to 9.0 and make sure you have 3.0 firmware. Having these installed on your phone will help make sure you don't get the 1600 error. You will have to play around with your device to see what works to remove the error. You can also hold the power and home button for several seconds to place it into DFU mode, which should help you install new programs onto your phone. When fini...

How To: Make a hack pack

This video tutorial belongs to the Electronics category which is going to show you how to make a hack pack. This is basically turning a notebook in to something that you can take literally anywhere. Here you will learn how to create a video streaming hack pack to carry around with you and be able to do live internet shows anywhere. For this you will need a netbook, Sony PSP, mobile Wi-Fi thumbstick, microphone and a webcam with Velcro or adhesive. Plug in the mobile Wi-Fi stick for internet c...

How To: Crimp your own ethernet cables

In this tutorial, we learn how to crimp your own Ethernet cables. First, grab your cable and take the end of the crimper. Place the cable inside of the crimper, then cut off the first few inches of the cable. Next, unwind the different cables and then use your crimper to straighten on the edges. Cut the wires so they are even, then strip it again if you cut the cable too short. If you have never dealt with crimping cables before, you might want to have someone experienced to help you. Make su...

How To: Increase your wi-fi signal with a coffee can

In this tutorial, we learn how to increase your Wi-Fi signal with a coffee can. Materials you will need are : a knife, a coffee can, tape, USB Wi-Fi adapter, and marker. First, measure 1 inch from the bottom of the coffee can then trace your USB around that mark. Now, cut a hole in that shape in the can. Next, cover the hole with your tape. Next, hook your USB up to your cable adapter, and then place it in the coffee can. Now, plug your USB into your computer and you should have more signals ...