Robots

Eugene recently had a line-following contest at the annual asian celebration. Unfortunately, several of the would-be entries got locked up in the local high-school, so we only had 3 contestants. Myself, one of my kids from the robotics club I mentor, and cute little snail bot that is all analog.

I spent all week working on my PID algorithm, and almost gave up the day before. But it turns out the test mat I built at home was far more difficult than the mat at the contest. So I’m glad I actually went.

I only planned to enter the “beginner” contest, but since there were so few contestants, I went ahead and tried my bot on the “advanced” course. Turns out that they’ve never had a bot successfully complete the advanced course, which my bot did on it’s 2nd try (which didn’t get recorded).

Duration : 0:5:41

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Line follower implemented with LeJOS (Java for Lego Mindstorms).
The robot follow the line until an obstacle is in front of it.
It includes color and distance calibration and sound/light advice when an object blocks the robot’s way.

Designed and programed by Arturo Moral & Miguel París. Universidad Rey Juan Carlos (Madrid-Spain)

Duration : 0:1:4

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X6 Hexaped, walker. Outdoor testing. The cold had a bit of a slowing of the pneumatic parts. This was the first test out doors in the dirt. A work in progress. This versions main concern was to try to get all the parts inside as compared to the first.

http://mindstorms.lego.com/nxtlog/ProjectDisplay.aspx?id=427742ff-fefd-45a4-bca1-8c20d0984d83

http://forums.nxtasy.org/index.php?showtopic=1663

http://mobildefencelab.blog.homepagenow.com/blog.shtml

Duration : 0:4:39

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About 8 seconds by my watch.

Duration : 0:0:11

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The Hexapod Walker is a six legged LEGO NXT robot walker. It uses a gait that causes very little slippage at the feet so can walk well with rubber tipped feet all the way around. The left and right motors control their respective sides corner legs. The motor in theback controls the middle set of legs so that either left or right corner legs can be lifted. When left middle goes down, left corner legs go up and right middle goes up.

First program just walks in a simple pattern. The second program was for a walking robot race and uses the small LED lights as navigation aids. Light sensor, mounted in the back but looks forward, sees the light and with every step adjusts step size to aim for light.

Duration : 0:2:28

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It is a 3 wheeled vehicle with a motor for each front wheel. A third motor is used to swing a light sensor so it can distinguish the black line from the white field and follow it.
A sound sensor makes it turn 180º with a whistle.

Duration : 0:1:7

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http://www.freewebs.com/laurens200/index.htm

Duration : 0:0:35

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