In Texas, guns are a common sight:gun-racks are visible in the back of many pick-ups, and pistols, cannons, and rifles are part of the state's iconography. Out-of-sight guns are common, too: The state has had legal (though highly regulated) concealed carry for handguns since 1995, though -- contrary to some people's guess, and with some exceptions -- open carry of handguns is not generally legal. One thing that's definitely not a common sight, though, is a group of people manufacturing guns just outside the south gates of the Texas capitol building. But that's just what you would have encountered a few weeks ago, when an organization called CATI (Come and Take It) Texas set up a tent that served as a tech demo as much as an act of social provocation. CATI had on hand one of the same Ghost Gunner CNC mills that FedEx now balks at shipping, and spent hours showing all comers how a "gun" (in the eyes of regulators, at least) can be quickly shaped from a piece of aluminum the ATF classifies as just a piece of aluminum. They came prepared to operate off-grid, and CATI Texas president Murdoch Pizgatti showed for my camera that the Ghost Gunner works just fine operating from a few big batteries -- no mains power required. (They ran the mill at a slower speed, though, to conserve juice.)

Zothecula writes: Working with colleagues from Deakin University and CSIRO (Commonwealth Scientific and Industrial Research Organization), researchers from Australia's Monash University have created the world's first 3D-printed jet engine. While they were at it, they created the world's second one, too. One of them is currently on display at the International Air Show in Avalon, Australia, while the other can be seen at the headquarters of French aerospace company Microturbo, in Toulouse.

mpicpp sends an article from Fortune about the tiny industry springing up around food-related 3D printing. While such devices are still too expensive and too special-purpose for home kitchens, professionals in restaurants and large cafeterias are figuring out ways they can automate certain time-intensive tasks. For example, pasta: "If the user is making a recipe for ravioli, for instance, the [device] prints the bottom layer of dough, the filling and the top dough layer in subsequent steps. It reduces a lengthy recipe to two minutes construction time and ensures that no one has to clean a countertop caked with leftover dough and flour." The companies developing these 3D printers hope they'll be this generation's version of the microwave, gradually finding a use in almost every kitchen.

Bruce Perens writes Chris Testa KD2BMH and I have been working for years on a software-defined transceiver that would be FCC-legal and could communicate using essentially any mode and protocol up to 1 MHz wide on frequencies between 50 and 1000 MHz. It's been discussed here before, most recently when Chris taught gate-array programming in Python. We are about to submit the third generation of the design for PCB fabrication, and hope that this version will be salable as a "developer board" and later as a packaged walkie-talkie, mobile, and base station. This radio is unique in that it uses your smartphone for the GUI, uses apps to provide communication modes, contains an on-board FLASH-based gate-array and a ucLinux system. We intend to go for FSF "Respects Your Freedom" certification for the device. My slide show contains 20 pages of schematics and is full of ham jargon ("HT" means "handi-talkie", an old Motorola product name and the hams word for "walkie talkie") but many non-hams should be able to parse it with some help from search engines. Bruce Perens K6BP

ErnieKey writes: Amazon has been inching its way into the 3D printing space over the past 10 months or so. This week, however, the U.S. Patent office published a filing by Amazon for mobile 3D printing delivery trucks. The trucks would have 3D printers and CNC machines on board and be able to communicate with a central hub. When a product is ordered, the mobile 3D printing truck that's closest to the consumer's home or office would then get the order, print it, and deliver it as soon as possible.

An anonymous reader writes Last fall, Defense Distributed — the company created by Cody Wilson of 3D-printed gun fame — announced a DIY gunsmithing machine called the Ghost Gunner. Now, FedEx is refusing to ship the device, saying there are laws or regulations that would prohibit them from shipment. A FedEx spokesperson said, "This device is capable of manufacturing firearms, and potentially by private individuals. We are uncertain at this time whether this device is a regulated commodity by local, state or federal governments. As such, to ensure we comply with the applicable law and regulations, FedEx declined to ship this device until we know more about how it will be regulated." Wilson argues, "They’re acting like this is legal when in fact it’s the expression of a political preference. The artifact that they’re shipping is a CNC mill. There’s nothing about it that is specifically related to firearms except the hocus pocus of the marketing."

szczys writes: The Hacker (sometimes called maker) movement holds sharing of ideas at its core. We at Hackaday are in the unique position to look at a huge data set from the last 365 days showing how people share their own work, and how they discover and interact with others. We've made some data visualizations which cover project topic distribution, views throughout year and by hour in the day, interactions between members of this community, and more.

ErnieKey writes The U.S. military is working with technology that will allow them to create exact virtual replicas of their soldiers. In case of an injury, these replicas could be used to 3D print exact medical models for rebuilding the injured patient's body and even exact replica implants. Could we all one day soon have virtual backups of ourselves that we can access and have new body parts 3D printed on demand?

An anonymous reader writes: Writer Adam Estes has tested over a thousand dollars worth of smart home gear from companies like Wink, GE, Lutron, Cree, and Leviton. Most of it worked correctly out of the box — which he said was great. But almost immediately, devices stopped responding and defects manifested themselves. Even after getting replacements and reconfiguring the devices, he found himself wondering if it was worth the effort to wrestle with all these devices, and ended up appreciating the simplicity of a plain old light switch.

Estes says, "Installation woes and bugs aside, my smart home never seemed handy. I had to tape off the regular switches so that the power would stay on and the bulbs' smart features would work. Even then, I had to pull out a smartphone or a tablet any time I wanted to dim the lights. That was never convenient. I could turn the lights on from my office, but that didn't really make my life better. I could impress my friends with a stray smart home feature here and there, but more often than not, I found myself embarrassed by the glitches of my smart home gone dumb." He concludes that while many smart home products can and do work, the biggest lie their marketers tell us is that it'll be simple and easy to set up and operate all these gadgets. Those of you who have wired up parts of your home, how has it worked out so far?

What kind of person builds a cloud chamber at home in his spare time -- and wants to make it easy for other people to make them, too? How about someone who uses a 3-D printer to make shifters for his bicycle? And then there's the spherical speaker enclosures and the alarm clock that shreds money if you don't wake up. The clock isn't original. Seattle resident Rich Olson (whose URL is nothinglabs.com) says someone else originally made it and he liked the idea. No 3-D printing or laser cutting required; just buy and hook up some inexpensive, easy-to-find components and off you go. Despite its lack of originality (which Rich freely admits), this little project got Rich mentioned everywhere from financial publications to the New York Daily News to Huffington Post's UK edition, which is somewhat amusing when you realize that Rich is not famous (outside of a small circle of maker-type people) and doesn't have anyone doing PR for him.

By day, Rich is a humble mobile app developer. But when he's done working he becomes Mr. 3-D and laser cut cool designer guy who does fun things in his workshop with CAD software, a 3-D printer, a laser cutter, and (of course) traditional cutting, drilling, and shaping tools. Since he's an open source devotee, Rich posts almost all of his designs online so you can make them yourself. Or modify them. Or use them to spur an entirely new idea that you can then make, and hopefully pass on to others. While it's interesting to see that Martha Stewart is now selling 3-D printer designs, Rich and his hobby are what the maker movement is really about. If you're so inclined, you can follow Rich on YouTube, where he posts a video now and then that shows what he's made recently or follow his low-volume blog to see what he's up to.

szczys writes Would you do a better job designing hardware if your life depended on it? Chris Nefcy is in that exact position. Years ago he developed an Automatic External Defibrilator for First Medic. The device allows non-doctors to restart a human heart in the field. When Chris had a heart attack his ticker was restarted with shocks from his own hardware. His story isn't just heartwarming, he also covers the path that led him into developing the AED and the bumpy road encountered getting the hardware to market.

An anonymous reader writes: You may recall last September when Mozilla and a new company named Matchstick announced a Kickstarter project for a new device that would compete with Google's Chromecast. It was an HDMI dongle for streaming media that runs on Firefox OS. They easily quadrupled their $100,000 funding goal, and estimated a ship date of February, 2015. Well, they emailed backers today to say that the Matchstick's release is being pushed back to August. They list a few reasons for the delay. For one, they want to upgrade some of the hardware: they're swapping the dual-core CPU for a quad-core model, and they're working on the Wi-Fi antenna to boost reception. But on the software side, the biggest change they mention is that they're adding support for DRM. This is a bit of a surprise, since all they said on the Kickstarter about DRM was that they hoped it would be handled "either via the playback app itself or the OS." Apparently this wasn't possible, so they're implementing Microsoft PlayReady tech on the Matchstick.

sciencehabit writes Researchers have built contraption from LEGOs that can move and rotate insects every which way while keeping them stable and positioned under a microscope. The design improves on previous insect manipulators because it's cheap, customizable, and easy to build. As natural history museums work on digitizing their voluminous collections—taking high-resolution photographs of each precious beetle, bee, and dragonfly in their possession—they have to handle insects repeatedly. Now the job will be easier on the entomologists, and more insect specimens will be able to hang on to their wings—all thanks to LEGOs.

MojoKid writes Here's a dose of Rebel goodness to tide you over while you wait for the next Star Wars trailer. A drone enthusiast in France recently graced the web with a few videos of a self-built quadcopter with a shell designed to look like the Millennium Falcon. It's enough to make a Star Wars fan tear up. The drone features a blue thruster light, just like the real Millennium Falcon, and has bright front lights as well. Its creator, who goes by "Oliver C", has some serious modding skills. The shape of the Millennium Falcon presented Oliver with some challenges, but he has the balance more or less handled by the time the spaceship (or quadcopter) takes its first flight outside.

stephendavion writes A team of researchers from Columbia University have developed a device that can be plugged into a smartphone and used to quickly test for HIV and syphilis. The mobile device tests for three infectious disease markers in just 15 minutes by using a finger-prick of blood, and draws all the power it needs from the smartphone, Science Daily reports. The accessory costs an estimated $34 to make and is capable of replicating tests done in a laboratory using equipment that costs many thousands of dollars.

An anonymous reader writes While Samsung's Gear VR headset launched in early December in the U.S., folks abroad didn't have any official means of buying the headset to test their in-development applications. Only recently has Gear VR begun making its way to countries around the world, and it's doing so slowly. For developers who don't want to wait (or DIYers who don't want to buy), some smart folks have figured out how to emulate the headset using a development board with an IMU that's been flashed with the same firmware found on the Oculus Rift DK1 headset. Plugging the board into the Note 4 (the smartphone that powers Gear VR), results in the phone recognizing the IMU as the Gear VR headset, allowing developers to test their applications and even launch the "Oculus Home" environment, allowing access to official applications and content.

jones_supa writes Microsoft is expanding their Windows Developer Program for Internet of Things by delivering a version of Windows 10 that runs on the Raspberry Pi 2. This release of Windows 10 will be free for the maker community through the Windows Developer Program for IoT. With an official partnership with the Raspberry Pi Foundation, Microsoft is bringing development tools, services and ecosystem to the Raspberry Pi community. More details will be shared in the coming months. You can already join the program and be amongst the first to receive product information and beta software releases.

ErnieKey writes Emerging Objects, a company which experiments with 3D printing technology, has created what they call the "Cool Brick." Using basic concepts of evaporation, it holds water like a sponge, takes in hot dry air and converts it into cool moist air. 3D-printed with a specially engineered lattice using ceramics, it can be formed into entire walls which could be placed in different rooms of a house or building, thus replacing the need for air conditioning in hot, dry climates such as deserts.

First time accepted submitter MicroHex writes Coming in at the same $35 price-point that has come to be expected from the Raspberry Pi, it looks like the new Model 2 will be packing a quad-core ARM processor with a GB of RAM. From the article: "The Raspberry Pi Foundation is likely to provoke a global geekgasm today with the surprise release of the Raspberry Pi 2 Model B: a turbocharged version of the B+ boasting a new Broadcom BCM2836 900MHz quad-core system-on-chip with 1GB of RAM – all of which will drive performance "at least 6x" that of the B+."

An anonymous reader writes: Security researcher Simone Margaritelli has reverse engineered the Bluetooth low-energy communications protocol for his Nike+ FuelBand SE, a wrist-worn activity tracker. He learned some disturbing facts: "The authentication system is vulnerable, anyone could connect to your device. The protocol supports direct reading and writing of the device memory, up to 65K of contents. The protocol supports commands that are not supposed to be implemented in a production release (bootloader mode, device self test, etc)." His post explains in detail how he managed this, and how Nike put effort into creating an authentication system, but then completely undermined it by using a hard-coded token. Margaritelli even provides a command list for the device, which can do things like grab an event log, upload a bitmap for the screen, and even reset it.