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Unread 29-01-2016, 22:58
B_Rad or B_Mad B_Rad or B_Mad is offline
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FRC 2977 Shooter Prototype

Team 2977's Shooter Prototype. It is very consistent just have to figure out the how to line it up correctly

http://youtu.be/tyZFmCqT54k

Last edited by B_Rad or B_Mad : 29-01-2016 at 23:11.
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Unread 29-01-2016, 23:07
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Re: FRC 2977 Shooter Prototype

Any plans on how to get and control " the right motor speed"?
It does seem to be fairly consistent.
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Unread 29-01-2016, 23:08
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Re: FRC 2977 Shooter Prototype

Great job guys! That looks awesome!
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Unread 29-01-2016, 23:13
B_Rad or B_Mad B_Rad or B_Mad is offline
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Re: FRC 2977 Shooter Prototype

We plan on adjusting the where the motors are placed and then finding a consistent "go to" spot near the tower so we can always make the shot. We may also be using sensors to find this "go to" spot
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Unread 30-01-2016, 00:33
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Re: FRC 2977 Shooter Prototype

So, my team went for a motorized kick in 2014, and really regretted it.

Here's our reveal video from that year.

It's a different game, and the game piece is much lighter this year, so you might not have the same problems, but here are some points that we had problems with that you might want to consider:
  • A kicker usually means you are shooting from down low. If you're going for distance, that means your shots can be easily blocked. (you don't seem to have this problem if you're only shooting from the batter.
  • Different battery voltages meant the kick had varying strength. the nature of the mechanism prevents you from using closed loop control to get a consistant speed as well.
  • The ball can not be held while you are kicking it. even having a holding mechanism which releases at just the right time still opens you up to a defensive bump in the critical moment.
  • The above two points also means it is virtually impossible to shoot while driving. There's a significant delay between when you get to a point and when you actually shoot. this opens you up to defense.

So that's some stuff that we had trouble with in 2014, most of it, I think, applies this year as well so try and see if you can avoid those problems somehow.

Good luck!
-Leav
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Unread 30-01-2016, 00:43
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Re: FRC 2977 Shooter Prototype

And just as a note, from experience: If you always shoot from the same place, and it's NOT a safe zone, expect to not be able to get there easily. Somebody will be more than happy to park there and keep you from getting to that spot, or hit you every time you look like you're heading there.
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Unread 30-01-2016, 01:37
vanjor18 vanjor18 is offline
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Re: FRC 2977 Shooter Prototype

We will hopefully be able to shoot at more than one high goal in the end, but we have a lot more planned out and in development.
I think that rhino tracks should be able to help us hold our ground against most pushing (at least from the side), but we definitely have to make sure that the ball is safely secured so it doesn't fall out.
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Unread 30-01-2016, 10:07
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Re: FRC 2977 Shooter Prototype

Quote:
Originally Posted by B_Rad or B_Mad View Post
Team 2977's Shooter Prototype. It is very consistent just have to figure out the how to line it up correctly

http://youtu.be/tyZFmCqT54k
Nifty, kind of a cleaner version of what Team Cockamamie did in Ri3D.

Quote:
Originally Posted by Leav View Post
So, my team went for a motorized kick in 2014, and really regretted it.
You guys were the rank 1 winners of Israel, sure it had issues at championships but I would call your teams first ever Blue Banner not a robot you should really regret anything on, don't be so hard on yourselves

Quote:
Originally Posted by Leav View Post
It's a different game, and the game piece is much lighter this year, so you might not have the same problems,
The game piece also seems like it is more reliable, what I mean is, there is no adjusting for inflation, there is no zipper meaning no vastly different location on the ball in terms of flexibility and the game piece is smaller, giving you a lot more control over it.

Quote:
Originally Posted by Leav View Post
[*]Different battery voltages meant the kick had varying strength. the nature of the mechanism prevents you from using closed loop control to get a consistant speed as well.
The kicker they are going for is going to hopefully have a lot less current draw then what we had to deal with in 2014 to get a ball going, but this point will also be true for a wheeled shooter, which a lot of people are going for.

Quote:
Originally Posted by Leav View Post
[*]The above two points also means it is virtually impossible to shoot while driving. There's a significant delay between when you get to a point and when you actually shoot. this opens you up to defense.
Agree to disagree, in 2014 we had a puncher as opposed to a kicker which also shot "low" (A moderately tall robot in front of us could easily block us), needed to hold the ball until right before we shot it, and we could shoot while driving, well being pushed by a defender

Quote:
Originally Posted by vanjor18 View Post
We will hopefully be able to shoot at more than one high goal in the end, but we have a lot more planned out and in development.
I think that rhino tracks should be able to help us hold our ground against most pushing (at least from the side), but we definitely have to make sure that the ball is safely secured so it doesn't fall out.
I think what Eric was saying or trying to get you to think about more was, If you have a sweet spot that is unprotected (like being up against the fender in 2012) defenders don't need to push you to stop your shot, they just need to get in front of you to stop you from being able to park there. Now if you can make your shot from within one robot length of your sweet spot, your golden.
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Unread 30-01-2016, 10:55
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Re: FRC 2977 Shooter Prototype

Quote:
Originally Posted by Leav View Post
So, my team went for a motorized kick in 2014, and really regretted it.
I remember your robot from the Galileo division in 2014. When I was pre-scouting before champs I remember watching your teams reveal video and I loved the motorized kick- it was definitely an interesting concept and seemed to work well for you guys.
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