Not everybody at a Maker Fair (or even Faire) is there to get kickstarted or to make a billion of whatever it is they're displaying. Ned Danyliw is one of the non-kickstarter people: an electrical engineering student displaying a quadcopter development platform he hopes can bring the cost of a quadcopter prototype down to $50 or so, or about the same price as a toy quadcopter. You can follow Ned's work step by step and see all the code at his blog, Burnt Transistors. (Alternate Video Link)

New submitter InternetOfJim writes: "This is one of the most fun weekend projects I've done in a while — a fitness tracker for my elliptical trainer. But the real agenda was to figure out how lazy I could be via web services (Keen IO and Brace IO) and development platforms (Electric Imp). Quite lazy, as it turns out. I wound up with a working device and a nice realtime dashboard with no soldering, no backend to manage, and surprisingly little original code needed beyond the sensing and power conserving parts of the firmware and a little javascript to customize the dashboard."

samzenpus (5) writes Andrew "bunnie" Huang holds a Ph.D in electrical engineering from MIT and is one of the most famous hardware and software hackers in the world. He is a contributing writer for MAKE magazine, and has worked on a number of projects ranging from autonomous robotic submarines to peel-and-stick electronics. We recently covered one of his latest projects, an open source hardware laptop called Novena which features entirely NDA-free components. Bunnie has agreed to take a break from his work and hack away at any questions you may have. As usual, ask as many as you'd like, but please, one question per post.

muterobert (2927951) writes with an update on the full immersion VR system from Project Holodeck (now renamed Survios). The system combines an Oculus DK2 with external sensors to make a fully immersive 8x'8' space "Ben Lang from Road to VR goes hands on and heads in with virtual reality technology company Survios' newest version of untethered VR system 'Prime 3'. He moves around the virtual space, holding and reloading weapons as you would in real life. 'At one point while playing, I was wielding the shotgun with two hands, with the table of weapons was on my right side. Several zombies were approaching and I needed a bit more fire power. I dropped the shotgun, reached over with my right hand to grab the tommy gun off the table, then virtually tossed it from my right hand to my left hand (because I'm a lefty), then pulled my pistol out of the holster with my right hand and continued to shoot both weapons.'" The article has a video, and it almost makes me think it's what being in the metaverse would be like.

25-year electronics veteran Conrad Lee noticed that commodity multi-channel security DVRs have both more channels than a typical household needs and more capabilities than their makers advertise -- at least, with some creative re-use of their video feeds. With a home-grown controller hooked up to an otherwise unused video channel, a run of the mill security DVR can be used as a command center for household items, like lights, locks, thermostats, cameras, or whatever else you think of) by means of controls both old-fashioned (the ubiquitous X10 devices, some of which you probably have stashed in a drawer) and new (Z-wave). He showed off his system at last month's Maker Faire -- take a look (video below) at what his clever hardware re-use makes possible, and at Lee's controller. It means giving up one (relatively) inexpensive channel, to gain capabilities that would cost quite a bit more in a ready-built system, like smart-phone control and pan/tilt control for cameras. (Alternate Video Link)

An anonymous reader writes "South African makerstore OpenHardware.co.za has designed and built a new RepRap-derivative 3D printer which it plans to sell for less than R5000 ($470). The first completed units are being put together now, with an eye to shipping late June. Store owner Peter van der Walt says that he designed Babybot — which has a print area equivalent to a RepRap Prusa Mendel-style machine — in order to reduce build and support costs. He's been selling various RepRap designs in kit form for two years, but as they become more popular is struggling to keep up with demand and handle returns. By sourcing more materials locally — he also designs his own controller boards — he's looking to beat the likes of RS Components and large shopping chains which have begun shipping the likes of Cubify in the country."

Last month, at Maker Faire Bay Area 2014, Timothy Lord spotted a guy wearing a very large piece of headgear that included two crossed wrenches. The guy turned out to be Mike Szczys, Managing Editor of hackaday.com, which says, "The Hackaday Prize will send one person into space for building the next evolution of hardware." That's certainly of interest to the hardware hacker/maker crowd. How they're going to arrange the space flight (probably one of those "just above the atmosphere" hops) isn't specified, but even so the contest is an interesting idea, and the Hack A Day site seems to have some interest hacks and tutorials on it. So go ahead and enter the contest -- and don't forget to take your camera with you on your flight into space, because we'll want to see pictures! (Alternate Video Link)

A while ago you had the chance to ask amateur scientist, and author of the Getting Started in Electronics and the Engineer's Mini-Notebook series, Forrest Mims, a number of questions about science, engineering, and a lifetime of educating and experimenting. Below you'll find his detailed answers to those questions.

An anonymous reader writes "Wireless security researcher Michael Ossmann asked himself: 'Could I make the gadgets that the agency uses to monitor and locate mobile phones, tap USB and Ethernet connections, maintain persistent malware on PCs, communicate with malware across air gaps, and more, by just using open source software and hardware?' In this podcast he shares his insights on what to use — and how — to duplicate hardware devices found in the ANT catalog."

An anonymous reader writes "MakerBot, in collaboration with NASA's Jet Propulsion Laboratory (JPL), is hosting a competition for the design of a future Mars base. The competition is open to any Thingiverse account holder regardless of professional or educational background. Winners will be chosen by a subjective panel of JPL and MakerBot employees based on scientific feasibility, creativity, and printability. Contest ends June 12, and contestants have to be at least 13 years old. The first place winner will receive a MakerBot Replicator 2 Desktop 3D printer and three spools of MakerBot Filament. The second place winner will receive two spools, and the third place winner will receive one spool. All three will have their design featured on Thingiverse." You can also browse the entries so far.

Lucas123 writes: 'Scientists developing smart robotic prosthetics say the lines between robots and humans is beginning to blur and that someday soon people will be able to improve their body. For example, robotic prosthetics, using a built-in computer, 100 sensors, and 17 motors, can take natural cues from a user's residual limb, giving him or her the dexterity and grace to play a piano. Robotic exoskeletons have helped people suffering from paralysis walk again and the U.S. military is just weeks away from testing a new exoskeleton. And, more than six years ago, a University of Arizona researcher who had successfully connected a moth's brain to a robot predicted that by 2022 we'll be using "hybrid" computers that run a combination of technology and living organic tissue. "By utilizing technology, you're able to improve your body beyond anything you could do in the past," said Daniel Wilson, an engineer with degrees in machine learning and robotics from Carnegie Mellon University.'

jfruh (300774) writes "Blue River Technology built a robot named LettuceBot that uses computer vision to kill unwanted lettuce plants in a field. Rather than build their creation from scratch, they built off of the Robot Operating System, an open source OS that, in the words of one engineer, 'allowed only a few engineers to write an entire system and receive our first check for service in only a few months.' With ROS robots starting to appear everywhere, including the International Space Station, it looks like open source may be making huge strides in this area."

waderoush (1271548) writes "Hardware is Silicon Valley's new religion. Bits and atoms aren't so different after all, the creed goes; just as the cost and complexity of starting a software company has drastically declined over the last decade, it's now becoming much cheaper and easier to start companies that make physical things. But talk to almost any real hardware company, and you'll discover that the promised land is still some distance away. Sparse, a San Francisco product design startup, learned that the hard way. The company raised $66,000 on Kickstarter for its uber-cool theft-proof bicycle lights, but it took more than a year to deliver the first units to backers, thanks to a string of unforeseen manufacturing and supply-chain snafus. 'We had all the t's crossed and all the i's dotted and still there was a big daily surprise,' says industrial designer Colin Owen, Sparse's co-founder and CEO. Today Sparse is shipping and profitable, with a vision to 'change the face of mobility' for urban cyclists, but its story illustrates just how high the bar still is for aspiring hardware entrepreneurs. Says Owen: 'I wish there was more of a handbook for these things, but the biggest hiccups were very localized and unpredictable.'"

It's a device, and quite a small one, based on the Raspberry Pi. It tells you when the ISS is visible from your part of the world and when it will soon be visible so you can grab the kids and dogs and run outside to wave at the astronauts. Or just to watch the closest thing humanity has to a space colony orbit the Earth. Liam Kennedy, ISS-Above's creator, points out that the ISS passes over most of the inhabited parts of the Earth five or six times a day, which is more than most people know. And about ISS-Above and Kickstarter: It's too late to climb on that wagon, and it already was when this interview was recorded in mid-May. But don't despair. Liam managed to raise $17,731 -- which was far more than his $5000 goal. Can you buy one of these things in its various manifestations? Yes. But you need to look long and hard at the ISS-Above website to spot the all-caps word HERE that takes you to the order page. Liam also points out that you can get all kinds of smartphone apps that will tell you where the ISS is at any given moment, but the ISS-Above has an advantage or two over those apps that will be revealed only to those who watch the video or read the transcript. (Alternate Video Link)

First time accepted submitter afeeney (719690) writes 'The Centre for Art and Media in Karlsruhe, Germany, is displaying an ear grown from DNA contributed by a relative of artist Vincent Van Gogh. The Center said artist Diemut Strebe made the replica using living cells from Lieuwe van Gogh, the great-great-grandson of Vincent’s brother Theo. Using a 3D-printer, the cells were shaped to resemble the ear that Vincent van Gogh is said to have cut off during a psychotic episode in 1888. “I use science basically like a type of brush, like Vincent used paint,” Strebe told The Associated Press. Historians argue about whether Van Gogh cut off his own ear and if so, why, but it remains one of the most famous acts of self-mutilation in the Western world.'

Lucas123 (935744) writes 'Ford has been using 3D printing for rapid prototyping since the mid-1980s, but in recent years it has ramped up its efforts adding new machines and materials. A tour of the facility revealed four different methods of 3D printing being used to prototype parts. For example, Ford uses Nylon 11 and laser sintering to make parts that can be retrofitted to working vehicles and tested over thousands of miles. The center also uses binder jet printing to form molds for metal prototypes by laying down layers of sand that are then epoxied together. Just one of its five 3D prototyping centers churns out more than 20,000 parts a year. Today, Ford could not meet new vehicle deadlines without 3D printing.'

Nerval's Lobster writes: 'Following up on news that ActiveLink is building heavy-duty exoskeletons for work in nuclear plants, IEEE Spectrum reports that MIT researchers are experimenting with Supernumerary Robotic Limbs (SRLs) that attach to either the shoulder or waist. The SRLs are capable of lifting objects and bracing against solid surfaces. From the article: "The SRL watches what you're doing with your arms to decide how to move. It does that by monitoring two inertial measurement units (IMUs) that the user wears on the wrists. A third IMU sits at the base of the robot's shoulder mount, to track the overall orientation and motion of the SRL." In the future, we will all have the ability to become Doctor Octopus (minus two robo-limbs, of course).'

The Fuel 3-D website has a blurb that says, "The world’s first handheld point-and-shoot, full color 3D scanner. Our planned list price is $1500 but by placing your advanced order now you pay only $1,250. Fire up your creativity!" We've thought about getting a 3-D scanner ever since we first messed with a 3-D printer, but we've thought more about something in the sub-$300 price range than in $1000+ territory. But that's just us. There is no doubt a healthy market for 3-D scanners to use in commercial applications where $1250 (or even $1500) is hardly worth noticing. Ah, well. Maybe we need to look at the The DAVID website which describes their device as an "Incredibly Low-Cost 3D Scanner for Everyone!" Their 3-D starter kit is only $529 from a randomly-selected U.S. reseller, which isn't too bad compared to the alternatives. But waiting for prices in this market niche to come down is another possibility, and it's one a whole lot of individuals -- including us -- and smaller companies will probably choose. (Alternate Video Link)

Lucas123 (935744) writes "Cody Wilson, the 26-year-old former law school student who published plans for printing 3D guns online, disputed claims by universities and government agencies that his thermoplastic gun design is unsafe. Wilson claims the agencies that tested the guns did not build them to spec. In a Q&A with Computerworld, he also addressed why he's continuing to press regulatory agencies to allow him to offer the plans again for upload after being ordered to take them down, saying it's less about the Second Amendment and more about the implications of open source and the digital age. "If you want to talk about rights, what does it mean to respect a civil liberty or civil right? Well, it means you understand there are social costs in having that right; that's why it deserves protection in the first place," he said. Wilson is also planning to release other gun-related project, though not necessarily a CAD design."

An anonymous reader writes "Nick Pitton, the developer behind the Spirited Away Boiler Room VR experience, has released his second project: the bus stop scene from Studio Ghibli's famous movie My Neighbor Totoro, once again in virtual reality for the Oculus Rift. Pittom 'hand-painted' the textures in Photoshop to recreated the painted-background feel of the movie. For the characters (Totoro and the Catbus) he used a cel-shaded approached to approximate the animated look from the movie. For his next project, he plans to recreate the ship and characters from the acclaimed anime Cowboy Bebop."