Robot Breakfast

From: IEEE Spectrum
June 11, 2011
by: Markus Waibel

Once upon a time, a charming American robot called James met a striking German bot by the name of Rosie. They liked each other, so they moved in together. Now they spend their days taking long walks in the lab and doing other things that robots do.

James is a PR2 robot, built by U.S. robotics firm Willow Garage, and it traveled to Germany as part of the PR2 Beta Program, an effort to popularize personal robots. At the Technical University Munich (TUM), James was introduced to Rosie, a dual-arm robot with a curvy figure and four eyes.

Their courtship was at first a bit mechanical, but they soon found many things in common: Both run ROS (Robot Operating System), use Hokuyo laser scanners and Kinect 3D sensors, and have omnidirectional mobile bases.

On a recent spring morning, James and Rosie were seen together cooking the traditional Weisswurst Frühstück, a Bavarian sausage breakfast.

A typical Bavarian Sausage BreakfastIt was a demonstration prepared by researchers at CoTeSys (Cognition for Technical Systems), a Munich-based high-tech cluster. This is how the researchers summarize the experiment:

TUM-Rosie is collecting the sausages, putting them into the pot with boiling water, waiting for them to be cooked and, finally, finding and getting them out of the pot into the serving bowl. [The PR2 robot] TUM-James is meanwhile slicing the french baguette using a regular electric bread slicer and in the end serving the sausages and the bread to the class of highly regarded roboticists. […]

TUM-James makes use of recent advances in the field of real-time RGB-D sensing using a Kinect sensor for the detection of the bread slicer and the baguette. In the serving task it uses PR2’s haptic capabilities in order to grasp and manipulate the plate.

TUM-Rosie is also using Kinect and perception algorithms from COP [cognitive perception] module in order to calibrate the skimmer and use it as a new tool center point of the arm. Furthermore it learns the 3D models for the pot and the bowls in order to be able to localize them at any arbitrary pose on the table. Lastly, it uses the torque sensors to resolve depth measurement inaccuracies through contact detection with the objects and blob segmentation in order to localize sausages inside the pot.

The couple has a promising life ahead of them, and we look forward to hearing about their future adventures and, hopefully, seeing some baby robots too.

PS: This is not the first romantic meal the robots have together. Last year, the pair prepared a somewhat more mainstream breakfast: pancakes. Guten Appetit!

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Robotics Summit

If you missed the last Robotics Trends’ Virtual Conference Series – Robotics Summit back in March (see my report) here is your chance to participate again. The next one is on June 22. Click here for more info.

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Robotics engages students, experts say

From: eSchool News
June 7, 2011
By Jenna Zwang, Assistant Editor

Engaging students at younger ages and making science, technology, engineering, and mathematics (STEM) education more appealing were some of the main topics up for discussion at a roundtable discussion hosted by LEGO Education and National Instruments on June 3.

“I think a lot of kids [who] are sitting in classrooms aren’t engaged, because we aren’t stimulating them,” said Joan Abdallah of the American Association of the Advancement of Science (AAAS). “If we really engage the kids using various kinds of technology, I think we could be very successful.”

One such technology cited by Abdallah is a recently-released robotics program from LEGO Education and National Instruments. The LEGO Education WeDo Robotics Construction Set is an easy-to-use set that introduces elementary-school students to robotics, while LEGO MINDSTORMS Education is aimed at middle and high schools. LEGO also has released LEGO MINDSTORMS Education + TETRIX for use in high schools and colleges.

In April, National Instruments introduced LabView for LEGO MINDSTORMS, a new education-focused version of the company’s professional LabVIEW graphical design software developed specifically for the use of LEGO Education robots. Students learn from the same software used by scientists and engineers while visually controlling and programming their robots.

“[Students] want to create systems themselves, they want to design the game, they don’t want to play someone else’s game,” said Hunter Smith, K-12 product marketing engineer at National Instruments. “With robotics, there’s no correct answer, there’s no final solution, so everyone can create their own solution—and as long as you solve the challenge, you win.”

Smith said science activities too often don’t engage students, because they are too structured.

“A lot of times, in physics, it feels like you’re doing the lab for the lab’s sake, that you’re doing it for the grade and not for the science. You do this in robotics, and [students] stop thinking about the grade and they start thinking about all the crazy robots they can build. It’s inherently open-ended, and it’s real,” he said.

Stephan Turnipseed, the president of LEGO Education in North America, said the robotics program can be used to address community issues and help solve needs.

“We see a lot of teachers using robotics to engage in storytelling, which really has been interesting as it was an unexpected outcome,” he said.

However, engaging students is far from the only issue facing STEM education. According to the panel, many STEM teachers are not well trained, especially at the elementary level.

“There’s a huge need in elementary education for much better-prepared, skilled teachers, because if you have that and you can bring [good] math and science teachers in, the whole system is going to benefit,” said David Mandel, director of research and policy analysis with the National Center on Education and the Economy.

Abdallah agreed that a change is necessary.

“Teachers are ill prepared or unprepared by the universities, so it’s not their fault that they can’t do it,” she said.

“If you ask your average elementary school teacher if they’d like to teach robotics, they run screaming into the night,” Turnipseed said. “So we had to change our language.” He pointed out that when Smith teaches a programming course, he uses terminology designed to pique students’ curiosity, as opposed to confusing them with technical terms too early.

“[Smith] takes a very complex engineering idea and he says, ‘What we’re going to do right now is find out how fast this wiggles,’ rather than a fast Fourier transform, which is what we’re really doing mathematically,” Turnipseed said.

But there also have been some positive changes in terms of publicizing STEM education careers, panelists said.

“I think there is a trend of making science more important in our country. When you start to see more CSI and MythBusters and fewer reality shows, I think even if there’s just bits of science or aspects of science, making that a part of our culture reinforces it with kids,” Smith said.

Mandel pointed out the need for science education to begin at an earlier age.

“When Chinese and American kids are two years old, they look the same in terms of quantitative literacy. When they’re five years old, before they start school, there’s a huge difference; Chinese kids are way ahead, and it’s because dealing with numbers and measurement is something that goes on between parents and kids in China but not here,” Mandel said. He said that in the United States, parents teach their children the alphabet and how to read but don’t place any emphasis on numbers or understanding mathematics.

“One thing that’s coming down the pike are national science standards, and that’s going to start a big conversation including what should be going on in science in elementary education,” Mandel said. “We’ve got a lot of inertia to overcome.”

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Happy IPv6 Day

From IEEE Spectrum
June 8, 2011

Happy IPv6 Day
We’ve run out of IPv4 addresses. Time to test drive the new protocol

Interview Podcast found at http://spectrum.ieee.org/podcast/telecom/standards/happy-ipv6-day

Happy “World IPv6 Day.” If that’s not on your calendar as a major holiday, I’ll explain. Today, more than a thousand organizations, including such Internet giants as Google, Akamai, and Facebook are taking the latest version of the Internet’s most important protocol out for a one-day test drive.

And it’s just in the nick of time. It’s been four months since the final batch of IPv4 addresses were handed out to the Regional Internet Registries, which means we could run completely out of IPv4 addresses within a year’s time. IPv6 can handle some 340 undecillion unique addresses. That sounds like a made-up word, but my producer assures me it means there are about 10 to the 29th more addresses than the 4 billion addresses that IPv4 has space for.

The Internet doesn’t have a president or prime minister or czar or any other form of governance; there’s no one to say, okay, this is the day we’re all going to switch from one IP version to another. There’s the Internet Engineering Task Force, a volunteer organization that hammers out the details of the protocols themselves, and there’s the Internet Society, a nonprofit organization that was created in 1992 in order to, as its charter says, provide leadership in Internet-related standards, education, and policy. Earlier this year the Internet Society decided to devote a day to the new protocol. So what’s this day all about? And what does it mean for us Web surfers, bloggers, e-mailers, and Facebook updaters?

My guest is Leslie Daigle, the chief Internet technology officer for the Internet Society. Previously, she served as chair of the Internet Architecture Board and before that, she worked on Internet directory systems with the Internet Engineering Task Force.

This interview was recorded 7 June 2011.
Segment producer: Ariel Bleicher; audio engineer: Francesco Ferorelli

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Hearst Electronic Products – Robot Issue

Click on the image below to see the magazine on line:

Of special interest, to me at least, was the article Optimizing a mobile robot’s navigation performance

But all the articles listed under “Issue Special” are of interest to roboticists.

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New Sample Return Robot Challenge Detailed

From The Space Review
via ASEE First Bell (June 7, 2011)

In an article for the Space Review (6/6), Ben Brockert of Armadillo Aerospace wrote about the new NASA-funded Centennial Challenge called the Sample Return Robot Challenge, asking participants to design “a fully autonomous robot…to venture around a course collecting pre-defined samples and bringing them back to a platform.” Teams will only have limited information about the course before the completion. Brockert is concerned that teams “must provide a full printout of their robot code along with a schematic of all electrical components” as this could have a “chilling effect” on competitors. Brockert is also worried that environmental conditions are not specified. To him, “time will tell whether the eventual rule set will drive innovation and a variety of approaches, like the regolith excavation challenge, or set up a problem so difficult no one will win, as in the regolith oxygen and strong tether challenges.”

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Treebot Learns to Autonomously Climb Trees

From IEEE Specturm
May 18, 2011

This is Treebot. As you might expect, Treebot was designed to do one thing: climb trees. It is by no means the first robot able to do this, but its arboreal predecessors (RiSE and Modsnake and accidentally PackBot are just a few) weren’t autonomous and didn’t have the skills necessary to negotiate the complex network of branches that you tend to find on trees worth climbing.

The design of Treebot is fairly unique: it uses a set of flexible linear actuators connecting two gripping claws to allow it to move around like an inchworm. While the back gripper holds on, the front gripper releases and the body extends forward, allowing the robot to literally feel around for a good place to grip.

Keeping to the inchworm theme, the robot doesn’t use much in the way of fancy sensors. Instead, it’s all tactile. You can tell the robot which direction you’d like it to go and how far, and the robot will grope its way to its destination, adaptively navigating from trunk to branches.

At the moment, Treebot is more or less blind. This isn’t necessarily a problem, but it could get where it wants to go much faster if it’s able to tell which branches have the highest potential to allow it to efficiently climb higher up, so researchers are working on ways to help Treebot optimize its climbing path.

TreeBot was designed by Tin Lun Lam and Yangsheng Xu from The Chinese University of Hong Kong, and their research was presented at ICRA last week in a paper entitled “Treebot: Autonomous Tree Climbing by Tactile Sensing.”

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Robbot Juggler

From IEEE Spectrum
May 31, 2011

UPDATE: The Czech roboticists updated their video with labels and a slow motion sequence, making it easier to see how the robot juggles three, and then four, and finally five balls, and also how it drops one ball at the end.

Robots are especially good at juggling. This is not to say that juggling is a particularly easy problem to tackle, because it’s not, but it’s a fun excuse to design a robot to demonstrate precision control and high-speed object tracking. The robot in the video above, for example, was built by three masters students from the Department of Control Engineering at the Czech Technical University in Prague. It uses three linear motors, including one for each arm and a third for a central ball deployment system, along with two pivoting “hands” to catch and toss up to five balls at once. The feedback loop is closed using data from encoders built in the motors, and a high-speed camera helps to fine-tune the trajectories of the balls.

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Very Large Telescope HD Timelapse Footage

From: PopSci
[with thanks to SvperNova09 of MidsouthMakers for pointing it out on IRC]

There’s very little we can write to preface the imagery below, so we’ll just set the scene and get out of the way. The video below was captured by Stephane Guisard and Jose Francisco Salgado at the European Southern Observatory’s Very Large Telescope (VLT) in Chile’s Atacama Desert. And it might make you cry.

What makes this time lapse particularly amazing–because we’ve all seen plenty of time lapse videos of the night sky–is the four telescopes in the foreground. Watching these instruments work against a black background would be endlessly fascinating on its own. Unfortunately you won’t be able to pay them too much attention. Because damn, what a sky.

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Let’s Make Robots

Looking for a wonderful place to see, learn and talk about robots? Try http://letsmakerobots.com/

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