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-   -   Team 2992 - 30 pt Climber - Top target dumper (http://www.chiefdelphi.com/forums/showthread.php?t=112808)

Basel A 05-02-2013 21:22

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by Jon Stratis (Post 1228200)
The process originally described was to load tanks during the match, which would imply that the robot (including battery and cRio) were not part of the process, thus illegal. I would still be extremely concerned about safety, even if everything was loaded up from the robot. That safety concern (handling and mounting pre-charged storage tanks) could very well be enough to cite R08.

Yeah, you're probably right with that safety concern. It'd probably be an inspector's call, which you are and I'm not, so I'll take your word on how big a concern that is.

sircedric4 06-02-2013 07:36

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by Rhelik (Post 1228221)
I am concerned the way your dumper works that you won't actually get the points for all those discs.

...-Bernie

Thanks for the concern! The dumper design was updated since the simulation run. Our trapdoor only falls open to 45 or 60 degrees depending on tests this weekend so that the frisbees all slide out. We hope that the angle and sliding momentum will be enough to keep them from stacking higher than the target line.

On another note, I personally feel that is a stupid rule/interpretation. I figure there are only 6 frisbees that can score and as long as they are within the horizontal component of the target box they should count. It is not trivial to get them up there and it seems to penalize those that are trying for the hardest goal.

Rhelik 06-02-2013 08:35

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Darren,

Great to hear you've already tackled a rule that is clearly making a tough goal even tougher.

I like the way you've tackled this years challenge.

-Bernie

coldfusion1279 06-02-2013 09:29

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Great job. My suggestion for the last two weeks is to beef up your drivetrain, if you can. Traversing the field to get colored discs will be the hardest part once you have a target on your back. It's nice to be able to plow through. Good Luck.

mdituri 06-02-2013 09:56

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Just want to say..Excellent job. 50 points consistently is huge during qualifiers and will most certainly have you in the elims, maybe even doing the picking. Hope to see you at Worlds since we compete in MAR.

GilaMonsterAlex 06-02-2013 10:11

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Very freaking cool! We spent a lot of time deliberating on what we wanted to do this year.

This an awesome robot.

sircedric4 06-02-2013 14:41

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by coldfusion1279 (Post 1228672)
Great job. My suggestion for the last two weeks is to beef up your drivetrain, if you can. Traversing the field to get colored discs will be the hardest part once you have a target on your back. It's nice to be able to plow through. Good Luck.

A great suggestion and one we had planned to do, but our final weight and Cg requirements probably won't allow us to do much in this respect.

We are counting on the smaller perimeters, the safe loading zones, the pinning rules, and being able to drive under the pyramids to allow us to make the one trip across the field we need.

I don't envy the good frisbee shooters that may need to make multiple trips across the field.

thefro526 06-02-2013 15:05

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by sircedric4 (Post 1228875)

We are counting on the smaller perimeters, the safe loading zones, the pinning rules, and being able to drive under the pyramids to allow us to make the one trip across the field we need.

Your robot is definitely awesome, but this post is even more impressive. It seems like you've really put a lot of thought into your entire strategy, both at the global level, and the step by step level, and for that I applaud you. Good luck wherever you end up.

Bryce Paputa 06-02-2013 15:45

Re: Team 2992 - 30 pt Climber - Top target dumper
 
This is awesome, it was also our plan until we realized that only 1 or 2 robots can fit inside the pyramid at the top level...


This will be awesome in qualifications, but in eliminations it makes it so you cannot pick any other inside climbing team and have them climb. GL

barn34 06-02-2013 15:47

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by sircedric4 (Post 1228625)
On another note, I personally feel that is a stupid rule/interpretation. I figure there are only 6 frisbees that can score and as long as they are within the horizontal component of the target box they should count. It is not trivial to get them up there and it seems to penalize those that are trying for the hardest goal.

I definitely agree with this. We've discovered a similar challenge with this scoring strategy and I feel that this is an obsurd limitation. Like you said, getting frisbees in that 5 point goal is not trivial (it is, in fact, the most difficult goal to score in). Having another limitation to the effectiveness of tackling the toughest of challenges, head on, seems counter intuitive to say the least. Hopefully, a rule update will be released prior to competition that remedies this.

All-in-all, great design, guys! Very impressive, and good luck at the competitions!

sircedric4 06-02-2013 15:56

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by Bryce Paputa (Post 1228906)
This is awesome, it was also our plan until we realized that only 1 or 2 robots can fit inside the pyramid at the top level...


This will be awesome in qualifications, but in eliminations it makes it so you cannot pick any other inside climbing team and have them climb. GL

While this is true, I would be willing to bet that the number of frisbee shooters to dedicated climbers will be at least 3 to 1. We figured that if we found a niche that we could do consistently then we would find ourselves 2 other partners to work with come eliminations.

We leave the entire autonomous to those floor feeders without getting in the way, and stay out of the way of others scoring. I would be willing to bet that the winning teams will have one floor pickup autonomous, two good scorers and 1 climber. Otherwise you end up getting in each others way and that can lower your scoring potential.

I think the GDC purposely built a game that will award a team of specializations as opposed to 3 good shooters. What is better a football team of all good quarterbacks, or one with a good quarterback, and good offensive lineman, and good receivers?

Jaxom 06-02-2013 15:59

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by AllenGregoryIV (Post 1228204)
In the past the rules have been such that you must use the battery you plan to use during the match. I haven't seen a Q&A about it this year, so I am not sure if that is still the correct ruling. R80 is unclear.

There is no rule that says you can't change batteries after filling up your tanks; see this post from Big Al: http://www.chiefdelphi.com/forums/sh...9&postcount=24

MetalJacket 06-02-2013 18:43

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by JesseK (Post 1228194)
It's also interesting to see that there haven't been any tangible claims (photos, video, sketches of ideas) of a corner-climber yet.

http://www.youtube.com/watch?v=Vjifzv5Oago

Not sure if you've seen this yet, or how tangible you consider it to be but it looks like this team has a corner climber.

frcchile 08-02-2013 10:08

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by sircedric4 (Post 1228083)
We have completed enough of our robot to finally showcase how we are gonna climb to 30 pts and dump frisbees on the top for 20 pts.

This week we will be finishing the wiring and plumbing and doing the final Cg adjustments to make it work.

To begin, this link takes you to a simulation we performed on the CAD robot to show everyone how we expect it to climb.

http://youtu.be/l7z5QPjqEAk

Our other video shows us doing the first 2 levels to make sure that the robot, as built, performed as required. You will notice weight cupcakes zip tied all over the robot to make sure our robot is at the proper weight and Cg.

http://youtu.be/CbTblcCOoS4

We plan to have the robot climbing under its own brains this weekend and when we get video of that, I will post it to this topic.

Enjoy! We look forward to your comments and questions.

Hello, I want to know what type of piston did you use and its specifications?

I thank you and I await your reply! :o

sircedric4 08-02-2013 15:49

Re: Team 2992 - 30 pt Climber - Top target dumper
 
Quote:

Originally Posted by frcchile (Post 1229850)
Hello, I want to know what type of piston did you use and its specifications?

I thank you and I await your reply! :o

2 inch diameter Bimba cylinders. If you do the math at 60 psi they can push 180 lbs and pull something like 155 lbs.


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