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This PCB art is both interesting a functional. Yuri Suzuki created Tube Map Radio, a PCB radio that doubles as a map of the London Underground Subway (the Tube). 

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Check out the story of America's most iconic product design, recognized world over -- the Coca-Cola contour bottle.

Shared by SolidSmack:

...When the Root Glass Company set out to design the bottle, they likely had no idea that it would become one of the most instantly-recognizable global brand designs within the past century – and yet 100 years later, Coca Cola is still served in contour bottles in both convenience stores as well as trendy and high-scale restaurants around the world. In total, Coca-Cola sells nearly 2 billion drinks a day in over 200 countries.

To celebrate 100 years of their contour bottle design, the company held a ‘The Coca-Cola Bottle: An American Icon at 100′ exhibition at the High Museum of Art in Atlanta, which featured a number of design sketches, prototypes, manufacturing artifacts and a number of iconic art pieces and photographs including those form Andy Warhol, among others....

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NASA has been releasing free downloadable 3D models of their spacecraft, spacesuits, probes, and etc for a few years now, and have been making extra efforts for a couple of years to provide desktop 3D printing-friendly formats as well. MAKE posted about their recent release of a Curiosity Mars Rover model here:

NASA has really improved on the 3D printable files that they offer. This set includes both simple and complex versions to accommodate those who want an easy print and those who want to get down into the nitty-gritty. There are tabs on the models to help with bed adhesion and the whole thing appears to be tested for printing....
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A guide from gopinath.marappan on Instructables:

...I show you how to add enhanced accessibility, intelligence and connectivity to an ordinary wall outlet. This is done with a combination of microcontrollers, Arduino, various sensors, ESP8266 and a mix of software packages. As I have designed this project in a sort of a modular fashion, you can try to build the whole project as it is or parts of it or even extend this project with more functionality....
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Researchers Tan and UCL colleagues presented a paper outlining an approach to "seeing" through walls as thick as 25 centimeter thick masonry walls thanks to a means of calculating Doppler shifts of Wi-Fi and mobile telephone signals in the interior space. From IEEE Spectrum:

...By tweaking the processing parameters—increasing signal-integration time and lowering sensitivity thresholds—the engineers could coax the passive radar into “seeing” quite subtle movements, even hand gestures. At this stage, the device doesn’t produce anything resembling a photograph of the subject. It delivers a radar-style scatter plot, a flare of color that says, “Here he is!” along with a variety of signal data.  The system is described in more detail in a paper that Tan and UCL colleagues Qingchao Chen, Karl Woodbridge, and Kevin Chetty presented at the 2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), held 19-24 April in South Brisbane, Australia....
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For those of you retrocomputer fans, here's a project to prep a RasPi with the hardware and software to permit XTIDE to emulate a hard drive for a vintage IBM 5150. As a result, delivering with a low cost embedded system what might have once been very expensive dedicated hardware. Hotrodding a vintage computer can be pretty cheap -- if you wait a couple of decades.....

From hackaday:

...The traditional solution to the ‘old PC without a hard drive’ problem is the XTIDE project. XTIDE is a controller card that translates relatively new IDE cards (or an emulated drive on another computer) as a hard drive on the vintage PC, just like a controller card would. Since a drive can be emulated by another computer, [Chris] grabbed the closest single board computer he had on hand, in this case a Raspberry Pi.
After burning an EPROM with XTIDE to drive an old network card, [Chris] set to work making the XTIDE software function on the Raspberry Pi side of things. The hardware on the modern side of the is just a Pi and a USB to RS232 adapter, set to a very low bitrate. Although the emulated drive is slow, it is relatively huge for computer of this era: 500 Megabytes of free space. It makes your head spin to think of how many vintage games and apps you can fit on that thing!
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Given how much the Cartesian Co team love modes of transportation -- from the Hoverboard to hover wheels -- we couldn't help sharing the WalkCar posted on TechInsider.io:

Kuniako Saito, a Japanese engineer, and his team at Cocoa Motors, have created a laptop-sized personal vehicle that weighs less than seven pounds. The device, dubbed the “WalkCar,” is described as a “car in a bag” because it can be easily carried around.

It's sort of like a small, four-wheeled electric skateboard meets a Segway.

The device is powered by a lithium battery and comes in both indoor and outdoor models. It only weighs between 4.4 to 6.6 pounds depending on the model, but can carry a person of up to 265 pounds, according to a Reuters report.​

Riders steer the WalkCar by shifting their weight from side-to-side in the direction they want to go. It can reach speeds up to 6.2 miles per hour and has a range of about seven miles after it's been charged for about three hours, according to the report....

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The Argentums might serve a different purpose, but while ours machines continue to trace away each layer of a circuit, this video featuring BeachBot from Disney Research warmed our heart:

...The BeachBot is an autonomous robot that can create large scale sand art. The robot will be deployed at a public beach to amaze beachgoers who pass by. Not only the final picture is important, the whole drawing process will provide an exceptional, magical show.

The BeachBot is not just a lifeless, mechanical being; it is a friendly looking creature with a soul....

...The BeachBot carves pictures into sand with a rake consisting of seven individual movable elements actuated by servo motors. They are attached at the tail of the robot. This solution leads to great visibility of the drawn lines and to a large variety in line width, from minimal 5 cm up to the width of the robot.

To be able to draw precisely the BeachBot needs accurate localization. The concept consists of an laser scanner mounted on the robot plus reflective poles, marking the border of the drawing field. (Therefore the laser can create an active map of its surrounding.)

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Proto G shared a handy prototyping hack, created by modding a mechanical pencil to dispense thin wire. Easy to use even in the heat of prototyping, while juggling soldering irons, snips, and other tools. 

This technique has been around a while, but the quick 3DP fabricated part in this tutorial makes this easy to execute for those with a desktop 3D printer at hand. via hackaday.

This is a 3d Printed attachment I designed that transforms an ordinary mechanical pencil into an awesome wiring pencil for prototyping. It was inspired by the old school roadrunner and verowire wiring pencils. The wire is 0.5mm magnet wire with an enamel that melts away with the heat of the soldering iron so there is no need for stripping wires. To use it, simply advance about 0.5" of wire and hold it to the solder joint until the enamels melts back. Once the solder hardens, click and drag to your next solder joint. I like to use tweezers and snips like in the video. You can even use thin solder to make a soldering pencil to go with your wiring pencil....
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