How to make Char Cord / Char Rope DIY Polygraph Machine: Detect Lies with Tin Foil, Wire and Arduino DIY Polygraph Machine: Detect Lies with Tin Foil, Wire and Arduino Lying is awesome. From a very young age, children learn that flat out denying the truth gets you out of trouble and helps keep you calm in the face of horror. But what happens when you just have to know if someone, say, used your toothbrush? You could ask them to take an expensive and arduous polygraph test. If you're industrious and don't have the dough for a legit polygraph, you can make your very own galvanic skin response (GSR) device. Today, we will make a cheap GSR device and learn if our toothbrush is really safe after all. Materials ArduinoAluminum foilVelcroWire10k resistorBreadboard Step 1 Make the Electrodes GSR machines require an even and consistent connection to the skin in order to function properly. Begin by taping the exposed end of a wires to a sheet of foil. Adhere a strip of Velcro over the tape and cut off the extra foil. Last, add a single piece of Velcro at the end of the foil side. Step 3 Load the Code
Japanese Scientists Create Touchable Holograms To Our Faithful Current.com Users: Current's run has ended after eight exciting years on air and online. The Current TV staff has appreciated your interest, support, participation and unflagging loyalty over the years. Your contributions helped make Current.com a vibrant place for discussing thousands of interesting stories, and your continued viewership motivated us to keep innovating and find new ways to reflect the voice of the people. We now welcome the on-air and digital presence of Al Jazeera America, a new news network committed to reporting on and investigating real stories affecting the lives of everyday Americans in every corner of the country. Thank you for inspiring and challenging us. – The Current TV Staff
Be Your Own Souvenir So you’re at the museum, and deep down in the sub-basement right next to the restrooms you happen to discover an enormous machine that looks like it was pulled from the Aliens II movie set. And then you notice you can insert a dollar, and suddenly the machine whirs to life and pipes hot, neon green plasticine into a mold in front of your very eyes as you inahale noxious fumes. Within moments you’re in the possession of a bona-fide neon green submarine, a memento of your visit to the museum that smells strange for days. Be Your Own Souvenir by Barcelona-based blablabLAB is just like that, except a trillion times more awesome. Using custom software developed using openFrameworks and openKinect, visitors film themselves in front of 3 kinect sensors for a full 360-degree scan and within moments a 3D printer known as a RepRap machine spits out a little army guy version of themselves.
How to Make Char-Twine Build Your Own Server | Why pay somebody to do it for you when you can build it yourself! [global] panic action = /usr/share/samba/panic-action %d workgroup = "Name" netbios name = "Server name" invalid users = root security = user wins support = no log file = /var/log/samba.log log level = 3 max log size = 1000 syslog = 1 encrypt passwords = true passdb backend = smbpasswd socket options = TCP_NODELAY dns proxy = no passwd program = /usr/bin/passwd %u passwd chat =*Enter\snew\sUNIX\spassword:* %n\n *Retype\snew\sUNIX\spassword:* %n\n . obey pam restrictions = yes pam password change = no null passwords = no #Share Definitions [homes] comment = Home Directories browseable = yes writable = yes security mask = 0700 create mask = 0700 #!
Hubble: Where is the center of the Universe? When astronomers look at distant galaxies to determine how fast they're moving, it looks like they're all moving away from us. Does that mean we're at the center of the universe? Well, no. It turns out that every point in the universe sees itself as the center! Try this! - Use your mouse to drag the top (blue circle) layer randomly over the bottom one, the difference between the two is hard to see. - Now choose a different dot on the top layer and line it up with its corresponding dot on the bottom layer. What's going on? The top layer (the universe today) was made by enlarging the bottom layer (the universe 1 billion years ago) by 5% percent.
Tap code The tap code, sometimes called the knock code, is a way to encode messages, letter by letter, in a very simple way and transmit it using a series of tap sounds, hence its name. It has been commonly used by prisoners to communicate with each other. The method of communicating is usually by "tapping" either the metal bars, pipes or the walls inside the cell. Design[edit] The tap code is based on a Polybius square, a 5×5 grid of letters representing all the letters of the Latin alphabet, except for K, which is represented by C. Or to communicate the word "water", the cipher would be the following (the pause between each number in a pair is smaller than the pause between one pair and the next): Because of the difficulty and length of time required for specifying a single letter, prisoners often devise abbreviations and acronyms for common items or phrases, such as "GN" for Good night, or "GBU" for God bless you.[1] History[edit] References[edit] External links[edit]
How to make a tool set Life without tools is barbaric. But even simple tools can be expensive in rural parts of developing countries. Import duties bump the costs up higher than they are in the States or elsewhere, and sometimes only low-quality brands are available anyway. So, to hold off future barbarians, we'd like to show how to build a simple tool set on a very low budget. Larry Bentley, the man who figured out how to make these tools, said a wise thing: "Without tools, kids don't take stuff apart, and without taking stuff apart, you don't learn how things work." These tools, Bentley says, could be in the hands of the next William Kamkambwa,who made a working wind power generator from backyard scraps in a village in Malawi. Here's Larry's quick guide to DIY tools. The tools in this guide: Saw Pliers Wooden vice Wood drill bit / star drill bit Chisel Strap hinge vice
'Drone It Yourself' Lets You Create a Drone from Any Object Have you ever wished for a flying book? A flying keyboard? Or, perhaps, a flying bodyboard? Well, it's your lucky day, because thanks to "Drone It Yourself," you can turn pretty much any object into a quadrocopter. The drone kit, created by Dutch independent designer Jasper Van Loenen, is comprised of pieces that can be 3D printed, and then clamped to any object you so desire. On his website, Van Loenen points out that the parts can be custom-designed, and that other DIY enthusiasts can modify them to make new add-ons for the quadrocopter drone. To find out more, check out the video, above. Image courtesy of Vimeo, Jasper Van Loenen
Symphony of Science From Terminator to Pollinator: Bees Go Robotic - Technology Robotics engineers are buzzing about a machine with potentially transformative implications for agriculture, surveillance, and mapping: the "robobee." Researchers at Harvard’s School of Engineering and Applied Sciences plan to have the mechanized critters flapping though the air autonomously within the next three years, according to NPR. And if coaxing the machines into flight isn't enough of a challenge, the real innovation lies in getting the machines to mimic the collaborative behavior of a colony. Each robobee will be equipped with sensors and cameras, instead of antennae and eyes, that will allow them to do everything from pollinating a field of crops to searching for survivors after a natural disaster. Manufacturing the bees has required completely rethinking materials and process. Image courtesy of Pratheev Sreetharan
Top 10 Things You Can Upgrade with a Little Electronics Hacking it is a skill to do a good solder joint, it comes with LOTS of practice. so most people who rarely do it will ever get good at it. Bingo. Of course, part of the issue is having a soldering iron at the right temp with a properly tinned tip. Newbies aren't using soldering stations but a cheap iron they got at rat shack (You have questions? I don't expect to ever master tricky stuff like smts or even multilayer pcbs so I'm not much better then a newbie, anyway - and I totally suck at sweating pipe joints. Ah, well... SMT is actually a bit better than through-hole once you get the hang of it.
How to Make a Three-Pendulum Rotary Harmonograph A harmonograph is a mechanical device that uses swinging pendulums to draw pictures, believed to be originally invented in 1844 by Scottish mathematician Hugh Blackburn. This 3-pendulum rotary type of harmonograph gives a wide variety of pleasant results, and is fairly easy to build once you've settled on a design and have acquired the appropriate materials and tools. This is a great project to do with kids and can result in endless experiments creating new types of geometric designs. Skip to More Results and Movie Two lateral pendulums swing back and forth at right angles to each other with arms connecting to a pen. One moves the pen from side to side, and the second moves it from front to back on the paper.