Hambot

Those of you who read our articles regularly already know that we are again building a new robot. His name is Hambot and he is the second version of GOAL, our robot we took to the world championships in Brazil last year.

Unfortunately GOAL had some problems to get up, because the relations of motor strength and weight were too bad. But during development last year we learned a lot about CAD and mechanics in robotics. Therefore we wanted to build a new version this season  and we did.

Hambot CADThe largest change, which can be seen directly, is that Hambot is produced nearly completely by 3D printing. This has many benefits for us, because we can produce our parts directly in the 3D printing lab next to our room. This  “Rapid Prototyping” allows us to create several different versions of a part on one day. For the metal parts we had to wait up to several days or even weeks every time. Additionally plastic weights less than aluminum and is cheaper. But the most important advantage are the richer design possibilities. The metal parts could only be arranged in angles of 90 degrees compared to 3D printing, which has nearly no restrictions. This also allows more human-like structures.

These weren’t the only changes we did. We also improved the interaction with the robot a lot. It now has more and illuminated buttons and a LCD touch display on his back. We also added an RGB-LED Ring on the front and a chip for speech synthesis, so we can understand our robot much better than with the previous software-solution.

HambotA very new field for us was the development of the electronics. More details will follow in a later article.

Luckily we were able to print the last parts and wire the electronics temporarily last week, because this week Hambot has to show his skills at the IranOpen. We wait eagerly!

Besides our new robot we had another reason to celebrate: Last week we handed in our first paper for the RoboCup symposium. Again more details will follow later.

Conclusively we had an eventful start in the new season. You will find more information about it in the Substanz magazine (a German popular-science magazine), which visited us last week to capture the atmosphere in the lab shortly before a competition.

Both, electronics and models for 3D printing can be found on our Github page, where we will release all our soft- and hardware as open source in future.

https://github.com/bit-bots

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New homepage design

As you surely have noticed, things look different here since some days.

Our site really got long in the tooth. Since we have nobody working full time on it, we always have difficulties keeping the site in an adequate state. Of course we put most of our time in the development of the robots  but we kept you in mind. Before we don’t have any time because of the running season, we now want to use the time to make some improvements.

bitBot_css.png
The most important improvement is probably our “responsive” design. It means that the content of our page it automatically adjusted to your screen size. Smartphone users can now read our page without having their fingers hurt because of excessive scrolling.

The menu now follows your scrolling, so you have access to it at any time, no matter where you are reading on our page. Our website’s calendar is now automatically synced with SOGo, which is a groupware solution we have used internally for a while now.

Photos are a considerable problem for us. We would like to present you as many of them as possible, but it costs a lot of time to sort them, prepare them for the web and publish them in a good way. Therefore you will miss photos at many places. We even have more than thousands photos (yes, really!) of the last championships, which we want to release. In future people are asked to keep the camera only on a few interesting motives, but you may know how difficult it is to restrict yourself =)

From a technical point of view we already did a larger change some time ago: We replaced the free (as in beer), but restricted and increasingly less well maintained version of NextGen by the public domain plugin WPPA+, because we were increasingly dissatisfied with NextGen. (Those of you who visit us more regularly might have noticed that our gallery didn’t always work). WPPA+ is quite new and the functionality is already really great (means: we want to make some more changes). It was a lot of work to migrate the 1264 photos into the new system, unfortunately all titles and comments were lost during the procedure. It wasn’t worth for us to write a software which rescues this data. Also the order of the pictures isn’t optimal, as automatic ordering fails because of missing meta data  and we didn’t have time to order them manually.In the near feature we would like to add more photos successively and edit the existing ones. Just visit us from time to time!

tl;dr?

On the new website everything got better now, but nothing is perfect!

If you notices things which may not work as expected after the conversion, feel free to write us an email or a comment. We will prioritize by the amount of complains  and of course we take praises too 😉

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Season preview

It starts again! After many months of preparation, we will start up the new season by attending the Iran Open (06. – 10.) in Teheran. There we are going to make up for the early elimination of the preseason. After a 10-day break, we will aim at winning the German Open in Magdeburg. Afterwards, we will prepare for the world championship in China where we will compete by the middle of July.

There are not only tournaments, but of course lectures will take place, too. And, by the end of the year, we are going to organise the 2nd RoHOW together with the HULKs again.

Additionally, we will release Hambot soon. Hambot is our self-constructed robot and the successor of GOAL. Over the last months, we went to great effort to put the final touches on it.

You see, this season promises to be intensive and interesting!

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University day 2015

Like last year we successfully represented our department at the university day (an open day of the university) and tried to enthuse pupil for robotic. Some team members met way too early for a student at 7:45 AM to send robots, the soccer field and our infrastructure on the long journey from the Informatikum to the department of Chemistry. At 9 AM on time other team members received the hardware and started to set everything up while the first visitors were waiting curiously. After everything was set, the robots started walking lively over the field and caught everyones attention when they kicked the ball. Sometimes they unfortunately hit the goal instead, because from the robots point of view the yellow goal looked pretty similar to the orange ball under the given lighting conditions. Additionally we brought some AIBOs (Artificial Intelligence roBOts, dog shaped robot build by Sony for entertainment), which can play with a ball as well as a little bone and react to cuddling and commands. Like last year there was the opportunity for visitors to control a robot manually and play soccer against the AI. We also had Paro, a therapy robot shaped as a baby seal which loves to be pet, with us. We also presented our new robot platform even though it still comes disassembled.

Overall it was a good chance for us to hunt and fix some bugs in our software and get an overview of our hardware condition (especially of the motors). Primarily we answered many curious questions of potential future students. We hope we could inspire them or at least arouse their interest in Computer Science.

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Hamburg Bit-Bots in the Media

By now there are also some videos and articles about us in the media landscape. A cool short video about us was made by our “Fanzine” Substanz.
Link to the corresponding site at Substanz. (Unfortunately both, video and article, are only available in German)

Substanz also made a report about the final game of the two RoHOW organizators  Hamburg Bit-Bots vs. Hulks. Link to the article. (again only in German, sorry!)

Additionally Spiegel TV Wissen covered the German Open in a report of which we are part of. It contains a few small mistakes, e.g. incorrectly assigned names and mixed up prices for robots, but in spite of everything the report is still a good one.

(Unfortunately in German again)

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Hefei – We fly!

The teams which qualified for the World Championships 2015 in China were just announced. We belong to these and will of course take part!

You can find a great overview of the participating teams on the official website. It includes the well worth seeing application videos, the TDPs (Team Description Paper) and technical information about the robots used. Everyone interested in the contest can get a good picture about the participating teams. If you plan to found your own team, especially take a look at the TDPs! (Since some time we are pleased to get requests from people all over the world who want to get into robotics and specifically into Robocup.)

You will find our own application video for season 2015 at the bottom of this article. Besides the part showing compulsory skills, which is required  for qualification, our video additionally contains scenes showing the state of our current research.

The application video was used for the application to the Iranian championships 2015 too, for which we are qualified (but still waiting for the acceptance of our traveling costs by the Iran). For the German championships no video showing our robots’ skills was required, but a TDP.

Enjoy watching!

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RoHOW conclusion

Now that we have recovered from organizing the RoHOW, it is time to look back and review the workshop.

On sunday, the RowHOW was open to the general public. During the day, we had several hundred visitors who watched not only the friendly matches but also several popular science talks. All in all, the day was a huge success.

The schedule alternated between talks and matches, which was very well received by the visitors. By playing halves of the SPL (Standard Platform League) matches during the half-time break of the Humanoid Kid-Sized League matches and vice versa, we were able to continously show gameplay and illustrate the differences between those leagues. At the end of the day we even had a special match between the SPL HULKs and our Humanoid Kid-Sized robots.

Among the visitors were many small children. While we could not really satisfy the young children with the scientific talks, they instead had the opportunity to steer a robot with an Xbox controller. A feat some 4-year-olds managed to do much better than their parents.

Beside the inspiring discussions with our guest teams, we were especially excited about the cooperation with the HULKs of the Hamburg University of Technology (TUHH), a team that, like ours, is completely organized by students. They hosted the RoHOW together with us and provided much of the organisation to get the location at the TUHH. We wish to thank the HULKs for joining us in making the RoHOW possible. At this scale, we wouldn’t have been able to accomplish it alone. We look forward to the opportunity of future collaboration on other projects.

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Artificial turf tests

At the beginning of 2015 we will probably play on artificial turf, that is the reason we decided to train our Robots ahead of time. There is a significant difference of the level of difficulty between the carpet we are playing on now and the artificial turf.

After plenty of time of consideration, we decided on an artificial turf with a height of 40mm and an appearance of natural grass. Due to a special composition of fiber at the bottom it makes the ‘blades of grass’ able to stand upright and filling sand becomes unnecessary. The reason we choose artificial turf with a level of difficulty so high is to be able to play on all sorts of artificial turf.

We will be launching the training on the new underground as soon as possible.

Stand auf Kunstrasen Tamara auf Kunstrasen auf Feld, Blick in Kamera
Wheatly standing on artificial turf
 

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Informatics Expo 2014 results

Our department has a big annual exhibition of student projects and theses. This year our team took part with “GOAL – a humanoid robot with more degrees of freedom” and won the third place! We are very happy about this result and will continue our work even more enthusiastic.

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