fischertechnik Robo TX Explorer Robot Kit
Overview of building the Robot TX Explorer Kit, running Robo Pro trail sensor example via bluetooth interface
Video Rating: 5 / 5
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Building my first robot (III) – Reacting to obstacles
This series reports on the first contact of 3 kids (7, 8 and 11yo) with a Lego Mindstorm robot construction kit in a workshop organized by University of Alcala (Spain) as part of the Alcabot 2011 event. After successfully building the robot, they have to program it using a graphical programming environment. This third video shows how the robot was programmed to measure the distance to obstacles using an infrared sonar and a sensor, thus avoiding obstacles by acting on its wheels.
This series reports on the first contact of 3 kids (7, 8 and 11yo) with a Lego Mindstorm robot construction kit in a workshop organized by University of Alcala (Spain) as part of the Alcabot 2011 event. After successfully building the robot, they have to program it using a graphical programming environment. This is the last video, where the kids finally succeed in programming the robot in a way that is aware of the sumo ring limits and avoids trespassing those limits by using the measures of its built-in light sensor. However, the attempt is not completely succcessful: it works ok when the robot turns on its right, but it doesn’t the other way round. Minor details given the short time devoted to the activity (one hour and a half) so… Well done kids!
How do I increase friction for a robot?
I am building a robot for the FIRST robotics competition. In the kit, they include very smooth tires. (about 1/6 friction coefficient) The ability to slow down and brake our robot is the key to winning.
So, the rules are:
Robots cannot exceed 120kg. Nothing besides the given tires can contact the floor. We have four tires. Cannot damage the arena floor intentionally. That’s about it.
Is there anything we can change to make the robot easier to control? Shifting the center of gravity using weights or something like that?
And we cannot make any changes to the tires. We cannot sand them or change them in any way beyond “normal use and wear”.
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Building a sumo robot. A physics question about motors, torque, and gears…?
The objective of the contest is raw pushing power. I have (3) duplicate electric motors at my disposal.
Would I get more power from attaching all three on a single axle that is torqued up with a gear ratio? Or would it be better to have each run independently, with its own gear set?
We are using the lego mindstorms robotics kit, and are limited to those parts, for anyone familiar.
Any other suggestions that may pertain to robot design or further increasing the pushing power are welcome.
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Directions to build a Lego NXT robot?
Do you know any sites that offer step-by-step directions for building a lego NXT robot man? (preferably the one on the LEGO NXT kit box top) You can see what I’m talking about here: http://www.degrunt.org/media/lego-nxt-robot.jpg
Thanks
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