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Unread 02-02-2003, 01:13 PM
ajlapp ajlapp is offline
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857 mostly complete robot

As of Saturday afternoon the robot is 90%. The wiring pictured is half temporary half official, we still have work to do on our box stacking device, and plenty of armor plating to add.

Semi-official weight as pictured is about 75 pounds. There are about 20 more pounds of robot components to be added, the rest after that is for pretty stuff.

Specs:

2 wheel swerve
3 d.o.f. arm
box indexing device that creates stacks of 4 boxes

the robot has a ground speed of about 5.5 fps, fits nicely under the bar in about 1.5 to 2 seconds(total fold time), and has really surprising traction(mostly because the arm allows us to distribute the cg directly over our front wheels), the final development of this system should allow us to create stacks of 4 and then place them of stacks of up to 3.

http://www.chiefdelphi.com/forums/pi...&quiet=verbose

http://www.chiefdelphi.com/forums/pi...&quiet=verbose

http://www.chiefdelphi.com/forums/pi...&quiet=verbose

http://www.chiefdelphi.com/forums/pi...&quiet=verbose

Anthony Lapp
Lead Design
Team 221-->857 Superior Roboworks
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Unread 02-02-2003, 01:20 PM
sanddrag sanddrag is offline
back to school ;-)
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Very Nice! How many students, engineers, teachers, etc are on your team?

Also, Where does the rotating light go?
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Unread 02-02-2003, 01:44 PM
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Very very cool. Wish i'd thought of laying the boxes down backwards on our arm. i'll see if i can convince my team to alter the arm to do that... just might work . Nice vector drive and omniwheels also. Reminds me of what our robot should look like, instead of being pieces. Sweet robot and good luck at the competitions.
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Unread 02-02-2003, 02:32 PM
ajlapp ajlapp is offline
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team info

we are a college team run by college students. we have roughly 10 or 12 college mentors, about 15 high school students and one high school teacher, although his time is tight and he is unable to be really involved.

the team was officially started in 2000 by myself and three other friends of mine from high school. i was a member of team 221 as a senior in high school, the other guys were from team 27, we started the team as freshman here at tech.
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Unread 02-02-2003, 05:04 PM
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How do you pick up boxes? Do you have to pick them up by being right on top of them?
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Unread 02-02-2003, 05:29 PM
ajlapp ajlapp is offline
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roller chain assembly

the chain on the arm when finished has chain hooks which lift the boxes along the rails.........

some of this assembly is pictured, but not all of it. the arm can pick up boxes in any position, including parallel to the ground or completely perpendicular to it.
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Unread 02-02-2003, 06:20 PM
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Quite impressive. I really need to see it in action to ever hope to comprehend what in the world it's doing. I assume you're going to at least one of the michigan regionals, so mabye i can see it there.
Very impressive.
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Unread 02-02-2003, 06:30 PM
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Hmm...

One thing is for sure, that robot is sexy.

My only dislike is the 2wd and crab+omni wheels. I would think you might have some problems going up the ramp, and will not be able to compete on the top of it...

Besides that it's great for it's intended purpose.

Greg
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Unread 02-02-2003, 10:42 PM
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Unread 02-03-2003, 12:17 AM
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Quote:
Originally posted by GregT
Hmm...

One thing is for sure, that robot is sexy.

My only dislike is the 2wd and crab+omni wheels. I would think you might have some problems going up the ramp, and will not be able to compete on the top of it...

Besides that it's great for it's intended purpose.

Greg
My guess would be that they aren't going to try for the ramp. I don't know if you were around for 2000s game but Chiefdelphi had a similar strategy. While everyone was fighting over the bar they continued to manipulate the balls uninterrupted. It proved to be a good strategy, and that years robot is still a favorite of many, including myself. Based on 857s drive, limbo capabilities and large stacking arm, my guess would be they are going to try a similar strategy by manipulating the bins/stacks while the other bots are fighting over the ramp.

Nice looking robot guys.

Last edited by foursixnine : 02-03-2003 at 02:12 PM.
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Unread 02-03-2003, 12:23 AM
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it looks a little tipsy... did you do any tests pushing against the top of it? or put it up against your old bot, see if you get pushed over
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Unread 02-03-2003, 01:02 PM
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bolts in treads...

What to folks think about the bolts attaching the tread?

I think literal interpretation of the rules would not allow them.

Other thoughts?

Joe J.
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Unread 02-03-2003, 01:30 PM
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Re: bolts in treads...

Quote:
Originally posted by Joe Johnson
What to folks think about the bolts attaching the tread?

I think literal interpretation of the rules would not allow them.

Other thoughts?

Joe J.
I agree Joe. I was under the impression that attatching tread in part, or completely in this fashion was against the rules.
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Unread 02-03-2003, 02:17 PM
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it looks pretty flimsy.

it doesnt have much of a solid framework. o well at least u guys did what u set out todo



bad
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Unread 02-03-2003, 03:32 PM
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Quote:
Originally posted by foursixnine
My guess would be that they aren't going to try for the ramp. I don't know if you were around for 2000s game but Chiefdelphi had a similar strategy. While everyone was fighting over the bar they continued to manipulate the balls uninterrupted. It proved to be a good strategy, and that years robot is still a favorite of many, including myself. Based on 857s drive, limbo capabilities and large stacking arm, my guess would be they are going to try a similar strategy by manipulating the bins/stacks while the other bots are fighting over the ramp.

Nice looking robot guys.
It looks like a thief bot to me, and a thief bot would work best over the ramp.
Greg
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