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Unread 03-02-2013, 19:31
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pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

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Unread 03-02-2013, 19:32
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

What are you using to hook onto the first rung?
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Unread 03-02-2013, 19:44
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

It's a steel spring loaded hook that pops out as the climbing shuttle pulls the robot up to the rung. Then the shuttle is free to move back the arm ready to reach for the next rung.
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Unread 03-02-2013, 20:15
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

My question is if you've tried this with bumpers. Bumpers might make that climb a lot more difficult.
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Unread 03-02-2013, 20:42
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

Yes, we've tried it with bumpers. That's one of the reasons the bot is only 15 x 24 inches.
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Unread 03-02-2013, 20:43
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

That's one small robot.
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Unread 03-02-2013, 22:22
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

Video? PLEASE
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Unread 03-02-2013, 23:32
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

It may be worth trying normal wheels instead of mech's before ditching the drive train all together
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Unread 04-02-2013, 09:52
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

After thinking a lot about the drivetrain we've decided to keep it. An essential element of the design is CG manipulation. The majority of the mass is low in the robot base (4 CIMs, 4 Banebot p-80s etc). The arm is coupled to the base via a CIM/256:1 P=80 gearbox. Changing the relative orientation of the arm to the base while hanging is what controls the arms orientation to the tower. Said more simply kicking that heavy base back and forth controls where the arm goes.

This picture was meant to be a 'clue' not a 'how to'. That said, we'd be glad to answer any questions and share details with anybody trying to make a similar concept work. This has and continues to be an evolutionary process from the crazy idea we had right after kickoff. Our design criteria are something that's unique, simple and elegant. That has lead to a lot of sleepless nights but after all this is FIRST!

If you want to see all this in action we'll be at the Colorado scrimmage a week from Saturday.
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Unread 04-02-2013, 10:25
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

This is cool! I'm kind of relived you kept the drive train, although part of me really wanted to see a sucessul robot without one. Good luck, and let us know how you do!
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Unread 04-02-2013, 11:27
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

A robot that climbs reliably for 30 points every match is not a bad alliance partner at all; can you pre-load colored discs, and dump them in the hopper at the top of the pyramid at the end of the climb?
This strategy may not make you the #1 seed, but will outscore lots of other teams that fail in/don't have autonomous, can only do a ten point climb, and end up only scoring five or six three-point discs in tele-op. And it could do so reliably, every single match.
This may outperform a robot that tries to do everything, and ends up doing nothing well.
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Unread 04-02-2013, 11:38
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

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Originally Posted by neshera View Post
A robot that climbs reliably for 30 points every match is not a bad alliance partner at all; can you pre-load colored discs, and dump them in the hopper at the top of the pyramid at the end of the climb?.
Colored discs start behind the corresponding alliance wall. You could design a robot that could be loaded by another robot for a dump but it'd be difficult for consistency between qualifications of a robot that can fit your needs.
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Unread 04-02-2013, 11:45
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

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Originally Posted by CalTran View Post
Colored discs start behind the corresponding alliance wall. You could design a robot that could be loaded by another robot for a dump but it'd be difficult for consistency between qualifications of a robot that can fit your needs.
Oops, sorry.
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Unread 04-02-2013, 12:06
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

We initially thought about colored disk in the top goal but quickly ruled them out for the following reasons. First, the base of the robot only gets above the second rung. Second, you'd have to go to the feeder station to get them. Third, you have to have a way to transport and place them. An the list goes on and on. Translation, it's not worth the extra 20 points. In fact in figuring out match tactics within our strategy, there are going to be situations where a 20 point climb will be all that is needed. As many of you have pointed out, one of the most important aspects of this year's game is reliability. Why would you want to make the robot less reliable by trying for 20 more points? We want to do one thing well. We're not greedy.
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Unread 04-02-2013, 12:23
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Re: pic: Haven't got a clue for 'how to' climb for 30 points? Here's one

Quote:
Originally Posted by NOV8R View Post
We initially thought about colored disk in the top goal but quickly ruled them out for the following reasons. First, the base of the robot only gets above the second rung. Second, you'd have to go to the feeder station to get them. Third, you have to have a way to transport and place them. An the list goes on and on. Translation, it's not worth the extra 20 points. In fact in figuring out match tactics within our strategy, there are going to be situations where a 20 point climb will be all that is needed. As many of you have pointed out, one of the most important aspects of this year's game is reliability. Why would you want to make the robot less reliable by trying for 20 more points? We want to do one thing well. We're not greedy.
To address the three bold points:

"the base of the robot only gets above the second rung."
Not necessarily true. The base of the robot, at a minimum, gets above the second rung. It is entirely possible, though not likely, to design a robot that practically hugs the rungs and gets you as high off the ground as possible. As well, the scoring mechanism doesn't have to be at the very bottom of the robot, and I would be quite surprised if it was at the very bottom.

"Translation, it's not worth the extra 20 points."
Hugely debatable. It's a fairly reliable system, and addressing the point above, even if you're barely above the second rung, you're still closer than ever to the goal. (<36" to the goal.) To put this in perspective, 20pts of white discs would mean 2 full trips (or hoppers) with almost perfect accuracy (you can miss one shot out of 8. Meaning you shoot with 88% accuracy.)

"A 20 point climb will be all that is needed."
I cannot speak for other teams, but for our team, it would be fairly difficult to stop at the 20pt level, unless we run out of air or have catastrophic failure. It is designed fairly autonomously and will more likely than not be a 30pt or bust climber.
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