Ubuntu Core Supports Raspberry Pi 2 I/O

Although it isn’t official, Ubuntu Core–the tiny Internet of Things version of Ubuntu–now runs on the Raspberry Pi 2. There are prebuilt binaries as well as instructions for how to roll your own, if you prefer. You can even access GPIO

Ubuntu Core abandons the old-style Debian packages, in favor of Snap, a new version of the Ubuntu phone’s Click package manager. Snap offers transactional updates. The idea is that all of these “things” on the IoT need to be updated to patch security holes or fix other issues.

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Sphero Riding Strandbeest Is A Robot With An Exoskeleton

[Theo Jansen] makes awesome things called Strandbeests; wind-driven automatons that roam beaches and art galleries. It has long been one of our favorite mechanisms. Newer, but also a favorite is the Sphero smartphone controlled orb. The combination of the two is epic!

You may remember seeing Sphero used to create a tiny BB8 replica. Inside the orb is a tiny robot capable of rolling itself hamster-wheel-style in any direction. It’s a rather powerful bot and that makes Sphero fast. The high RPM is what makes this hack possible. Sphero spins rapidly while perched on some rollerblade wheels. Gearing converts this to the rolling motion of the Strandbeest.

The original concept was posted a year ago but it was just now brought to our attention by [fhareide]  who is working on his own smaller Strandbeest driven by a Sphero. Since there are no assembly details on the original posting, you can follow along with [fhareide’s] documentation in order to complete your own build. So far [fhareide] imported the STL model into Autodesk Inventor, printed out one set of gears to insure the printer resolution could handle it, and assembled one set of legs.
We think of this as a kind of exoskeleton for a Sphero. We’ll keep an eye on this through the assembly, testing the drive mechanism and then the point where the whole thing becomes self-aware and either runs away to hide or terminates him.

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Raspberry Pi Halt And Catch… Well, Halt

As far back as we can remember, there have always been hacks, exploits, and just curiosity about undocumented CPU instructions. The Z80 had them. Even the HP41C calculator had some undocumented codes. The HCF (Halt and Catch Fire) instruction was apocryphal, but we always heard the old video controller chips could be coaxed into blowing up certain monitors. You don’t hear too much about things like that lately, perhaps because fewer people are working in assembly language.

[Sergi Àlvarez i Capilla] not only works in assembly language, he was writing an ARM assembler when he noticed something funny. Instructions are built in a regular pattern and some of the patterns were missing. What to do? [Sergi] lost no time trying them out.

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Two New FPGA Families, Designed In China

The two largest manufacturers of FPGAs are, by far, Altera and Xilinx. They control over 80% of the market share, with Lattice and others picking up the tail end. The impact of this can be seen in EE labs and alibaba; nearly every FPGA dev board, every instructional, and every bit of coursework is based on Altera or Xilinx chips.

There’s a new contender from the east. Gowin Semiconductor has released two lines of FPGAs (Google translate) in just under two years. That’s incredibly fast for a company that appears to be gearing up to take on the Altera and Xilinx monolith.

The FPGA line released last week, the GW1N family, is comprised of two devices with 1,152 and 8,640 LUTs. These FPGAs are built on a 55nm process, and are meant to compete with the low end of Altera’s and Xilinx’ offerings. This adds to Gowin’s portfolio introduced last May with the GW2A (Google translate) family, featuring devices ranging from 18,000 to 55,000 LUTs and DSP blocks. Packages will range from easily solderable QFN32 and LQFP100, to BGA packages with more pins than an eighteenth century seamstress at the royal ball.

For comparison, Xilinx’ Spartan-6 LX family begins with devices featuring 3,840 LUTs and 216kb of block RAM, with larger devices featuring 147,443 LUTs and up to 268kb of block RAM. Altera’s Cyclone IV E devices are similarly equipped, with devices ranging from 6,272 to 114,480 LUTs. Between the two device families introduced by Gowin recently, nearly the entire market of low-end FPGAs is covered, and they’re improving on the current offerings: the GW1N chips feature random access on-chip Flash memory. Neither the low-end devices from Altera nor devices from Lattice provide random-access Flash.

The toolchain for Gowin’s new FPGAs is based nearly entirely on Synopsys’ Synplify Pro, with dedicated tools from Gowin for transforming HDL into a bitstream for the chip. This deal was inked last year. As for when these devices will make it to market, Gowin is hoping to send out kits to well-qualified devs soon, and the devices may soon show up in the warehouses of distributors.

Gowin’s FPGAs, in contrast to the vast, vast majority of FPGAs, are designed and fabbed in China. This gives Gowin a unique home-field advantage in the land where everything is made. With LVDS, DSP, and other peripherals these FPGAs can handle, Gowin’s offerings open up a wide variety of options to developers and product engineers a few miles away from the Gowin plant.

The GW1N and GW2A families of FPGAs are fairly small when it comes to the world of FPGAs. This limitation is by capability though, and not number of units shipped. It’s nearly tautological that the largest market for FPGAs would be consumer goods, and Gowin is focusing on what will sell well before digging in to higher end designs. We will be seeing these chips show up in devices shortly, and with that comes a new platform to tinker around with.

If you’re looking to make your mark on the world of open source hardware and software, you could do worse than to start digging into the synthesis and bitstream of these Gowin chips. Just months ago, Lattice’s iCE40 bitstream was reverse engineered, and already there are a few boards capitalizing on a fully open source toolchain for programmable logic. With more capable FPGAs coming out of China that could be stuffed into every imaginable product, it’s a golden opportunity for hardware hackers and developers alike.

[Thanks for the tip Antti]

Robots Are Coming For Our Jobs. Just Not All Of Them.

There is a lot to be said for replacing certain kinds of jobs with robots. Most people would agree that replacing physical human labor with automation is a good thing. It’s especially good to automate the dangerous kinds of labor like some facets of factory work. What about automation in fields that require more mental labor, where physical strain isn’t the concern? Is replacing humans really the best course of action? A year ago, a video called Humans Need Not Apply set forth an explanation of how robots will inevitably replace us. But that narrative is a tough sell.

Whether it is even possible depends on the job being automated. It also depends on how far we are able to take technology, and the amount of labor we are willing to offload. Automation has been replacing human workers in assembly and manufacturing industries for years. Even with equipment and upkeep expenses, the tireless nature of robotic workers means dramatically lower overhead for businesses.

Many of the current forms of factory automation are rather dumb. When something goes wrong and their task is compromised, they keep chugging away. That costs time and money. But there are companies out there producing robots that are better on many levels.

May Your Robot Overlords Be Cute and Cuddly

baxter-heroIn 2013, Rethink Robotics started filling orders for a new line called Baxter. They are a class of general purpose robot that can be programmed to do many kinds of manual tasks. Baxter bots have vision, and they can learn how to do a job simply by watching. They don’t need to be programmed in the traditional sense.

Baxter even has a face – a screen that shows different expressions depending on his state. When he’s in the midst of a task, his eyes are cast downward. If something goes wrong, he stops what he’s doing. His cartoon face appears sort of shocked, then sad. He goes into safe mode and waits to be fixed.

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Hilarious DARPA Robots Falling Video

If you’re worried about Skynet, take a quick gander at the outtakes reel (YouTube, inlined below the break) from the DARPA Robotics Challenge (DRC) and you’ll feel a lot better. The IEEE Spectrum reporters assigned to the DRC took a break from their otherwise serious coverage and made this funny compilation of all the multi-million dollar robotic fails to go along with this article.

robot_fallingIt’s hard not to empathize with the robots, and we’ll admit that we winced a little bit with the first couple falls. (But after three or four, started breaking out in maniacal laughter.)

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RTLSDR

Decoding Satellite-based Text Messages With RTL-SDR And Hacked GPS Antenna

[Carl] just found a yet another use for the RTL-SDR. He’s been decoding Inmarsat STD-C EGC messages with it. Inmarsat is a British satellite telecommunications company. They provide communications all over the world to places that do not have a reliable terrestrial communications network. STD-C is a text message communications channel used mostly by maritime operators. This channel contains Enhanced Group Call (EGC) messages which include information such as search and rescue, coast guard, weather, and more.

Not much equipment is required for this, just the RTL-SDR dongle, an antenna, a computer, and the cables to hook them all up together. Once all of the gear was collected, [Carl] used an Android app called Satellite AR to locate his nearest Inmarsat satellite. Since these satellites are geostationary, he won’t have to move his antenna once it’s pointed in the right direction.

Hacked GPS antenna
Hacked GPS antenna

As far as antennas go, [Carl] recommends a dish or helix antenna. If you don’t want to fork over the money for something that fancy, he also explains how you can modify a $10 GPS antenna to work for this purpose. He admits that it’s not the best antenna for this, but it will get the job done. A typical GPS antenna will be tuned for 1575 MHz and will contain a band pass filter that prevents the antenna from picking up signals 1-2MHz away from that frequency.

To remove the filter, the plastic case must first be removed. Then a metal reflector needs to be removed from the bottom of the antenna using a soldering iron. The actual antenna circuit is hiding under the reflector. The filter is typically the largest component on the board. After desoldering, the IN and OUT pads are bridged together. The whole thing can then be put back together for use with this project.

Once everything was hooked up and the antenna was pointed in the right place, the audio output from the dongle was piped into the SDR# tuner software. After tuning to the correct frequency and setting all of the audio parameters, the audio was then decoded with another program called tdma-demo.exe. If everything is tuned just right, the software will be able to decode the audio signal and it will start to display messages. [Carl] posted some interesting examples including a couple of pirate warnings.

If you can’t get enough RTL-SDR hacks, be sure to check out some of the others we’ve featured in the past. And don’t forget to send in links to your own hacking!