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Unread 05-10-2012, 08:10 AM
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Re: Why didn't we think of that?

Quote:
Originally Posted by Gary.C View Post
Many people thought we couldn't key shoot.

But we could probably key shoot as fast as we could fender.
-Gary
I've seen that pic before; not sure why I didn't remember it. Stupid AP Tests, clearing my head of useful knowledge and putting in useless stuff.

It looks like it was designed for both types of shots. I'd say I was more surprised when I was watching MSC and saw 548 back up and take shots.
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Unread 05-10-2012, 09:50 AM
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Re: Why didn't we think of that?

What about 118's 2011 tube centering wings? They were pretty cool and innovative.

Or the 16 ball grabber device from this year?
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Unread 05-10-2012, 10:09 AM
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Re: Why didn't we think of that?

Quote:
Originally Posted by LedLover96 View Post
What about 118's 2011 tube centering wings? They were pretty cool and innovative.

Or the 16 ball grabber device from this year?
I don't think 118's "wings" from 2011 was a game changer, at least not enough to make me wish I'd thought of it. Additionally, IIRC, they ended up removing the wings.

16's ball grabber device is really an example of the 'over the bumper' style of collection, one that was sported by many top tier robots. Having said that, I wish we'd thought of it.

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Unread 05-10-2012, 10:28 AM
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Re: Why didn't we think of that?

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Originally Posted by ttldomination View Post
Speaking of which, anyone have an links to information or documentation behind how they made this work?
I've seen it up close a bunch of times, but I'm going from memory. Hopefully one of the 67 guys can jump in on this.

Here's what I remember: a LOT of thick latex tubing around a reel, which was coupled to a winch. A small arm set a hook on the top bar of the tower which was attached to the cable from the winch. They pulled a pin (or some other link) that released the reel, causing the spring energy stored in the latex tubing to spin the reel, which spun the winch. They fashioned a BIG hand crank that hooked up to the reel so they could wind it up before each match.
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Unread 05-10-2012, 10:35 AM
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Re: Why didn't we think of that?

I think people thought of it, I know I did, but I never thought I'd see someone pull it off:

2056's hanging mechanism in 2010. I loved that thing.

Btw 1625 also had a gas strut hanger in 2010 to lift after the buzzer.
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Unread 05-10-2012, 02:10 PM
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Re: Why didn't we think of that?

I'm surprised no one brought up the pinch rollers from 2010, especially in a game where ball possession was everything.
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Unread 05-10-2012, 02:15 PM
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Re: Why didn't we think of that?

Quote:
Originally Posted by Laaba 80 View Post
I'm surprised no one brought up the pinch rollers from 2010, especially in a game where ball possession was everything.
While we're on 2010, 25's ball vacuum. Their ability to suck a ball out of a corner was really advantageous.

I've always wanted to replay 2010 to combine the IFI double pinch roller and 25's vacuum to create the ultimate ball possession device...
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Unread 05-10-2012, 04:04 PM
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Re: Why didn't we think of that?

Not sure if this is really brilliant or not, but I was impressed.

1114 uses one image to track the net. This allows for less lag, just the same accuracy and prevents blocking their view.

I thought that was cool. Maybe it's just me being a on a rookie team without a shooter.
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Unread 05-10-2012, 10:22 PM
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Re: Why didn't we think of that?

Team 2122 developed a "bump box" that would hold two balls in hybrid mode and was designed to attach to kop frame members of shooter-less alliance partners. Given the importance of hybrid scoring in this year's game we wanted a way to keep two balls off the co-op bridge and feed them into our shooter. Our programmers wrote a hybrid mode in which our robot would shoot two, back up and bump our partner and load and shoot their two balls. Worked well in finals in Spokane and we got to use it twice at Champs.

Spokane: http://www.youtube.com/watch?v=Ofefwcw56Ow

Here is a pic of the bump box mounted on 4082 in Spokane:
http://dl.dropbox.com/u/60133134/DSC_5768.JPG
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Unread 05-10-2012, 10:40 PM
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Re: Why didn't we think of that?

Quote:
Originally Posted by joelg236 View Post
Not sure if this is really brilliant or not, but I was impressed.

1114 uses one image to track the net. This allows for less lag, just the same accuracy and prevents blocking their view.

I thought that was cool. Maybe it's just me being a on a rookie team without a shooter.
What exactly do you mean by one image?

It sounds like they take one image at the start of the match, then use that for reference for the rest of the match, which I have a hard time believing was ever implemented (although if it's 1114...)
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Unread 05-10-2012, 11:24 PM
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Re: Why didn't we think of that?

Quote:
Originally Posted by slijin View Post
What exactly do you mean by one image?

It sounds like they take one image at the start of the match, then use that for reference for the rest of the match, which I have a hard time believing was ever implemented (although if it's 1114...)
Probably robot is lined up in the key and not going to move; take image, act on that. As long as the robot base doesn't move you're fine.
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Unread 05-10-2012, 11:27 PM
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Re: Why didn't we think of that?

Quote:
Originally Posted by HumblePie View Post
I heard from another team attending CMP that another team there used a bowl as well. Can anyone confirm?
Tigertrons Team 222 used a dog bowl I believe.
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Unread 05-10-2012, 11:29 PM
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Re: Why didn't we think of that?

Quote:
Originally Posted by AdamHeard View Post
Probably robot is lined up in the key and not going to move; take image, act on that. As long as the robot base doesn't move you're fine.
Basically, if you know the relationship between "pixels from center" of the target in the camera and "degrees from center" of your turret, you can just take a single picture once the robot base is in place and turn the turret the correct amount using an encoder or potentiometer.
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Unread 05-11-2012, 12:03 AM
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Re: Why didn't we think of that?

Quote:
Originally Posted by HumblePie View Post
I heard from another team attending CMP that another team there used a bowl as well. Can anyone confirm?
Multiple teams did; besides the one already mentioned, 987 used a bowl to feed their shooter from their conveyor.
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Unread 05-11-2012, 10:41 AM
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Re: Why didn't we think of that?

Quote:
Originally Posted by mwmac View Post
Team 2122 developed a "bump box" that would hold two balls in hybrid mode and was designed to attach to kop frame members of shooter-less alliance partners. Given the importance of hybrid scoring in this year's game we wanted a way to keep two balls off the co-op bridge and feed them into our shooter. Our programmers wrote a hybrid mode in which our robot would shoot two, back up and bump our partner and load and shoot their two balls. Worked well in finals in Spokane and we got to use it twice at Champs.

Spokane: http://www.youtube.com/watch?v=Ofefwcw56Ow

Here is a pic of the bump box mounted on 4082 in Spokane:
http://dl.dropbox.com/u/60133134/DSC_5768.JPG
This is brilliant. Great work and a nice example of simplicity mixed with outside the box thinking.
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