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Operating the Coilgun |
http://robotex.ing.ee/2011/12/operating-the-coilgun
December 9, 2011. Now that we’ve figured out how to operate a motor. Let us describe the second important electro-mechanical component of the robot – the coilgun. Previously, we have already discussed briefly the general idea. And its mechanical realization. What remains are the minor implementation details. Recollect that the general scheme of a coilgun (somewhat simplified. Of course) is the following:. In order to make this scheme operable, we must replace the switches “. 8221; and “. But during one o...
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Vision |
http://robotex.ing.ee/category/vision
January 21, 2012. The pixel classifier/blob detector. And the coordinate mapper. Ie those that do not correspond to balls or goals) and 2) we need to extract useful features. Such as the position of the ball(s) or location of the goalposts. Issues that need to be solved after blob detection. Finding actual balls and goals among the candidates. And then making the decision based on those. The. Features for object recognition. Let’s discuss those in order:. We simply count the proportion of non-green and n...
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About |
http://robotex.ing.ee/sample-page
This blog is about the life and doings of an enthusiastic team of four guys in its pursuit to build a smartphone-based robot to compete in Robotex 2011. There are four of us: Andreas, Konstantin. Reiko and Taavi, we are all university students in Tartu. Andreas just started his first year, Reiko and Taavi are master students, and Konstantin is far into his PhD studies. The team was formed in September 2011, as we all enrolled in the “ Robotex. Leave a Reply Cancel reply. You must be logged in.
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Robotiehituse lihtne valem (Arvutimaailm 02.2012) |
http://robotex.ing.ee/2012/02/robotiehituse-lihtne-valem-arvutimaailm-02-2012
Robotiehituse lihtne valem (Arvutimaailm 02.2012). February 16, 2012. A short article somewhat mentioning Telliskivi, entitled “A simple formula for building a robot” has been published in this month’s Arvutimaailm. Magazine. To summarize it in three sentences, the article says: “. Robotics is fun. In order to build a robot you need to work on mechanics, electronics and programming. Everyone should do Robotics! Robotiehituse lihtne valem (AM 02.2012). Probabilistic Localization of a Soccer Robot →.
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Uncategorized |
http://robotex.ing.ee/category/uncategorized
Probabilistic Localization of a Soccer Robot. May 16, 2013. This summer Priit Kallas. Is defending his master’s thesis, entitled “ Probabilistic Localization of a Soccer Robot. 8220;, where he describes how he implemented reliable localization on a soccer robot “Telliskivi II”, who got a second place in Robotex 2012 (the name stems from the fact that two core members from the Telliskivi team participated in its creation). And check out the teaser video:. February 16, 2012. January 31, 2012. Detecting the...
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Pixel Classification and Blob Detection |
http://robotex.ing.ee/2012/01/pixel-classification-and-blob-detection
Pixel Classification and Blob Detection. January 8, 2012. The task of the vision processing module is to detect various. On the camera frame. In its most general form, this task of. Making good use of the color information is of paramount importance for implementing a fast Robotex vision processor. Thus, the first step in our vision processing pipeline takes in a camera frame and decides, for each pixel, whether the pixel is “. 8220;, “. 8220;, “. 8220;, “. 8220;, “. 8221; or something else. May sometime...
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The Motors |
http://robotex.ing.ee/2011/12/the-motors
December 2, 2011. The parts of the robot, that have turned out to be one of the trickiest for us, were the motors. There are three motors in our robot – two for the wheels and one for the dribbler, and all of them have been causing headaches. The variety of motors one can choose for the wheels of a robot is staggering. How to choose the right one? Here’s how we went about it. The first decision we had to make is whether to use a brushless. Or a stall torque at least 0.4 N m. And a pair of these. Built-in...
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Wall Proximity Detection |
http://robotex.ing.ee/2012/01/wall-proximity-detection
January 31, 2012. View of a robot bumped into a wall. The object detection techniques described in the previous post. In addition, the “wall proximity flag” is used in the behaviour algorithm – getting stuck bumping into the wall is certainly a condition that we want to avoid. Wall proximity detection regions. The vertical position of the three detection regions depends slightly on the angle of the smartphone. To account for that, we have a simple calibration routine, which detects the vertical coord...
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Telliskivi’s Brain: Overview |
http://robotex.ing.ee/2011/12/telliskivis-brain-overview
Telliskivi’s Brain: Overview. December 23, 2011. Now that we are done with the hardware details, let us move to the “brain” of the Telliskivi robot – the software, running on the smartphone. By now you can safely forget everything you read (if you did) about the hardware, and only keep in mind that Telliskivi is a two-wheeled. Robot with a coilgun. And a ball sensor. That can communicate over Bluetooth. 8211; sets the PID speed setpoints. For the two motors. In particular, “. 8211; shoots the coilgun,.
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Preliminary Competition (24.11.2011) |
http://robotex.ing.ee/2012/01/preliminary-competition-24-11-2011
Preliminary Competition (24.11.2011). January 24, 2012. A couple of days before the actual Robotex competition we had a preliminary “test competition” in Tartu. At that time most of the Tartu robots were not actually yet ready to play properly, but it was none the less a fun event. Team Nasty (who had their robot’s electronics completely burned down in the morning and somehow managed to completely recover in time) won. Telliskivi came a close second. Wall Proximity Detection →. On Setting up the Camera.
