Report of the first match against RoboPatriots

A few minutes ago the first Round Robin match against the RoboPatriots ended 0:0. On the very same morning team members worked in groups of two on the vision, walking, standing up and on the Hardware until short before the game. A new robot inspection was required multiple times, because the robots first got bottle caps attached as cleats, after that arm extension made of bottle caps and in the end bottle cap shin-pads. By now we have a large collection of empty and cap-less water bottles around our team table.

Shortly before the game started we faced a critical situation as only one robot was able to play with it’s Hardware and all others struggled with minor or major Hardware problems. In the beginning of the game we finally had three Darwins on the field as strikers and Kuddel, one of our self-designed and self-made Hambot robots, had his first use as a goal keeper. One could easily see the huge progress the team made during the last two days: The Darwins still fell down when they tried to walk, but they could stand up stable to continue playing immediately. In addition, we reached our first intermediate goal, which was to use Hambot in at least one game. Unfortunately the joy about that didn’t last very long, because after about a minute one of our Darwins fell into the Hambot unfavorably. Hambot still stood leaned towards the back for a few more seconds, but then he could not hold the position anymore and he crashed into his own goal. This year the goal is made out of tight wire instead of a soft net. This has the advantage of a stable goal, but it got fatal for the Hambot – multiple fractures of the hip were the result after only one minute of playing. However, our opponents had difficulties with the walking, too. At least they developed some kind of stable walk that reminds one of skiing, but it brought them forward only millimeters. That way the first half ended without anything else to report. After the break, Wheatly replaced the injured Kuddel in the goal and performed well even though the behavior was not tested beforehand. In fact, he recognized a field line as a ball sometimes and threw himself to one side, but he stood up stable in the first trial every time and searched for more dangerous balls. Our field player (first Fiona and later on Tamara) made it headways now, too. They walked from outside the center circle to the middle in order to kick the ball. Unfortunately they failed to kick the ball and instead they always fell right onto the ball. The RoboPatriots didn’t even had one robot on the field most of the time and so the second half of the game ended uneventfully.

In about an hour the next game will start and the agenda is clear: Whaetly shall play instead of Kuddel, who is still under medical treatment. To achieve an even better game play, some parameters of the goal keeper behavior need to be adjusted. Additionally, the Darwin walking still requires improvement. However, first of all we work on a stable shoot. We hope we can already see the first improvements during the next game against Bold Hearts. Bold Hearts by the way ended their first game with a 0:0 against the empty field. All results are published on the Humanoid website half an hour after the game at latest. So it is worth taking a look at the site after our next game, because we are probably slower with publishing the next game report than the TC needs to announce the result.

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Leagueforum

Communication is very important for our team. We often discuss and exchange views. This does not only happen in face to face conversations but with the help of mailing lists, Jabber and Discourse-Forum, too.
Regular exchanges between teams is an aim of the RoboCup-Community. Until now, except for competition times, it had only been possible to communicate via mail or mailing lists (if you wanted to reach several people at once). To change this, we created in consultation with other teams a forum for exchange among each other . We have already created categories and added some content to them.
You are very welcome to register to our forum, in order to ask questions, to comment on posts and to discuss your ideas.
Please do not let yourself be put off by the apparent emptiness of the forum – everything has to start from scratch.

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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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Quarterfinals 2014

In the first quaterfinal match of the 2014 RoboCup the Teams Bold Hearts and MRL are facing each other.

Both teams have good chances to win, so enjoy the game!

Livestream: https://plus.google.com/hangouts/_/g2dc3zrb22vxadt2kp3ysk37mia

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Coding Weekend

Our journey to Brazil is getting closer. There are just two weeks left, so we are going to make a coding weekend at the upcoming weekend (4/7 – 6/7). The main focus will be on testing the software, do some necessary hardware modifications and organize the last things for the trip to Brazil.

We are very excited and look forward to our second big journey.

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The referee’s whistle

In the past we often had to experience that the wireless network did not work as reliable as we would have liked it to be. So we eagerly searched for possibilities of recognizing the referee even without a working Gamecontroller.

Usually the referee uses a whistle to start the play after the game state SET, so we developed an approach based on Fast-Fourier-Transformation and analysis of the extracted spectrum which looks promising.

In the picture, it can easily be seen that a specific frequency is dominant throughout a given time. If our robots are manually set to the game state SET and the game is ready to start, this can be used as a help for the decision when the game state should change to PLAY.

sound

Maybe this might even give us a small advantage in a match with a working GameController, as it usually has a delayed reaction.

We will see…

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