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#1
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pic: Ball Drive Close Up
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#2
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Is it just a lightning trick or are you really powering the sideways movement of those balls with the cims? It's kinda hard to tell if those are for that or extra drivettrain omph.
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#3
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Quote:
Essentially, this is a true omnidirectional drivetrain. They can go forward, backward, left, and right at will. They can also change the direction their robot points at will. I haven't seen anything this great since the Kiwi Drive. Unfortuantely, you can't really do this without problems because of no 3rd drill motor this year. With the exception of the Kiwi Drive last year, I've yet to see a team that has a truly omni-directional drivetrain. Now the TechnoKats are added to this 2 team list. Many teams can create the illusion of an omnidirectional drive but they really can only move in 2 directions in any given instant. Swerve drives have to wait for the wheels to re-align. Teams with a 2nd drivetrain that drops down still can't move in a diagonal path, and have to wait for the drivetrain to lower. I suggest some people read this: Quote:
Challenge for next year: Try to improve upon this drive such that the traction between the ball and the drive wheels can be improved to the point where it rivals a tank-drive robot. If anyone can do this, they would have the supreme advantage. |
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#4
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That's pretty sweet. But i still think the odd-colored ball must go. make it one unform color
![]() good work |
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#5
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Somebody has been looking at a mouse too long, lol. Nice job... I actually had a similiar idea for something I was working on outside of robotics, glad to see it works
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#6
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Looking at the previous posted picture, I had no idea that the ball was powered (I didn't look too hard, sue me
), but at this point, I am impressed to the point of being unable to walk.Mad props go to 45, and the engineer who came up with this innovative and inventive (read: crazy as heck) idea. /me gives double thumbs-up. ![]() |
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#7
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It's wierd; we've got an engineer named Mark who comes up with really crazy stuff too.
<edit> From the pic, it looks like your broke (or bent) the radio port on your controller. We did the same thing to ours and had to solder in a new port. I would check on that because ours still worked after breaking but after opening it up we found some pins were broken. I would change the mounting location or orientation (raise it?) of your controller so there's no force from the plugs on those fragile ports.</edit> Last edited by sanddrag : 03-03-2003 at 23:08. |
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#8
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Omg I want video?
So cool |
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#9
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very, very cool.
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#10
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Quote:
No, the controller and radio port are ok. When making space for electronics they didnt estimate how much space they would need for the robot controller. The robot contoller is just at an angle and the bent look is not real. At the first regional, I planned to get that fixed when I had time. |
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#11
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do you know where you get a set of those omni wheels?
and how much they cost, i see some potential for my own personal use... Bad |
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#12
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My question is this, how can it more sideways if it attached to the frame. Or am I seeing things wrong. Anyway, great idea. I'm going to try and improve on the idea this summer.
I want to see the program too. |
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#13
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Quote:
You wont be able to buy any like this, unless we build some for you and sell them, or give you prints so you can buy the parts and construct them yourself. |
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#14
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Quote:
Second, the program was thrown together at the last minute. The program is just a simple tank drive code with 2 sticks, and if you move the right stick left and right, it gives you sideways movement. |
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#15
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I get it now, but I thought there was a point where the ball was attached to the frame using a bolt (on the left side of the ball, there is a thing touching and possably in the ball, but I guess not)
How do you keep the ball in there without it flying out going over the ramp? |
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