Overview of GTUG projects at GDD Moscow 2011


    Last Monday, Google Developer Day Moscow 2011 was held. In addition to a variety of interesting reports on modern development technologies, a separate section at the event was devoted to GTUG team projects.

    Unexpectedly for us, Google invited Amperka to take part in this event and provide support to some GTUG projects. You can read about what happened in the end under the cut.

    For those who don’t know: GTUG (Google Technology User Group) is an association of hackers (in the good sense of the word) in different cities of the world. Google provides such teams with information and other support, and they, in turn, implement creative, innovative projects using Google technologies.

    This year, a bunch of Android devices and the Arduino ADK were especially popular with something else to get unique, interesting gadgets.

    I will briefly talk about the projects below.


    Robowars project is presented by a team from Ufa (author - Gilyazitdinov Rafael irafa ). It turned out a fun outdoor game of two two-wheeled robots and an Android tablet.

    Each of the robots has a hammer and a large button - a weak spot. 2 players play: each for his own robot. The goal of the game is to beat the robot-opponent with the button of your hammer and not substitute yourself. The first one to gain 4 points, that - well done.

    The robots themselves are controlled from any Android device through a specially written client. Players in split screen mode are given a virtual mushroom joystick and a “Punch!” Button.

    Communication with robots occurs through XBee modules . Schematically, the iron is organized in this way:

    The project turned out to be understandable and fun: even adult uncles in expensive suits enjoyed the beating of an opponent in an impromptu arena.

    GDD Member Counter

    The project was implemented by the Moscow GTUG team together with Amperka. He decently patted everyone's nerves in preparation. Due to lack of time, most of it was collected and frantically tested on the night before the event. Everything remained in a state of “almost-almost working” until 11 a.m., despite the fact that the conference opened its doors at 9.

    But efforts were rewarded, and as a result, before entering the hall, GTUG was set up, a la Google+ circle with indicator of the number of registered guests. For crafts from several sliced ​​pieces of LED strip, a stripped extension cord stolen in one of the Crocus rooms and a handful of control electronics in a food container, it looked more than decent. At the time of installation, while not yet understanding what exactly the number means, many guests hurried to take a picture against the background of the device.

    Data on the number of visitors, the indicator took over HTTP from a nearby reception desk. Schematically, the device looks like this:

    In fact, as we later realized, most of the guests did not understand what this figure was for, and many of them stubbornly bounced around in the hope of increasing the counter. We would have thought of this earlier, maybe we would have made the counter of past guests in kilograms. It would be more fun.

    Andruido music studio

    The project was presented by a team from Almaty (leader - Jamshed Nasridinov). The bottom line is: on the frame above are lasers, on the frame below - response photoresistors. They form 8 laser strings. The frame is connected to an Android phone, where a sound sample is recorded for each of the strings.

    The interruption of the beam causes the phone to play the corresponding sound. In such an unusual way, compositions can be made. For demonstration, only one bank of sounds was prepared: the 1st string - the word "one", the 2nd string - the word "two", etc. But even so, some of the guests extracted amusing "musical works."

    Android interface for routers

    The Kyiv GTUG Center team from Ukraine presented their project to simplify the configuration of network routers. Perhaps it was the least spectacular, but at the same time the most useful and applied GTUG project.

    The bottom line is that it’s hard for Internet service provider techs to lug around laptops in cramped basements. And somehow you need to reconfigure the routers. The authors of the project presented a solution based on Android and Arduino ADK, which allows you to replace the laptop with a compact box with a simple touch-interface.

    Audio Visualizer ADK Led Matrix

    Another project from Ukraine (author - Alexey Zhurbitsky blo ) is an audio spectrum visualizer. Android plays an audio track, Arduino in Open Accessory mode controls a large LED matrix. All together - a simple but stylish looking audio-visual installation


    And another team from Ukraine, Donetsk (author - Roman Bogdzievich romeo_ordos ) presented a project game based on Arduino ADK and an Android tablet. In it, Android is controlled by Arduino, and vice versa: the signal from home-made joysticks via Arduino is sent to the tablet.

    One “mushroom” on the joystick is responsible for the caterpillars, the other for the tower. One button is set aside for fire.

    The task is simple - to shoot the opponent.

    Awarding Open Call Winners

    Winners of the Open Call contest received from Google the latest set of Matryoshka Z based on the Arduino Uno .

    They became the very first users of it: at the time of the delivery of the kit was not even on display in Amperka. I hope everyone liked them.

    Here is such a GDD.

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