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  #316   Spotlight this post!  
Unread 12-12-2011, 17:15
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Re: First Official 2012 Game Hint

What if there is a tunnel?
There are a lot of amber lights and a lot of photoswitches- which monitor light in a given spot. This would work most accurately in a full dark situtation which is not possible in a game setting. To get full dark, I propose that as a speculation, they have a tunnel, and blind operations.
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Unread 14-12-2011, 15:09
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Re: First Official 2012 Game Hint

what will the very high speed counter be used for? I was wondering if there would be tennis balls, racketballs, golf balls?
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Unread 14-12-2011, 17:15
zaphodp.jensen zaphodp.jensen is offline
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Re: First Official 2012 Game Hint

Quote:
Originally Posted by Miksoko View Post
What if there is a tunnel?
There are a lot of amber lights and a lot of photoswitches- which monitor light in a given spot. This would work most accurately in a full dark situtation which is not possible in a game setting. To get full dark, I propose that as a speculation, they have a tunnel, and blind operations.

The Amber lights are found on all of the competition fields, under the stack lights at the Alliance Stations. There are 6 Per Field. That is 12 for the two new fields.

Also, the photoswitches are used for detecting proximity, and or line following. They are not analog parts, so they are not useful for detecting light levels. How they work is they send out an IR beam, and when they get a reflection that is above a set threshold amount, they turn on.

And if we had a tunnel long enough for it to be dark, how would the field get reset, how would the spectators see, and the operators operate?
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Unread 14-12-2011, 17:16
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Re: First Official 2012 Game Hint

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Originally Posted by UBY View Post
what will the very high speed counter be used for? I was wondering if there would be tennis balls, racketballs, golf balls?
Small balls are a possibility, but also consider the safety aspect of any game piece... a golf ball that gets shot out into the crowd (or at a ref!) could injure someone. If you've ever played tennis or racquetball, you know those can sting pretty good too, when hit hard!

Foam balls - like those used in many Nerf toys - can be launched pretty quickly, yet won't hurt much if a shot goes wrong. But those are probably too easily obtained and frequently stocked to be used as a FIRST game piece
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Unread 14-12-2011, 17:16
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Re: First Official 2012 Game Hint

QBY, please read the posts before. This has been discussed heavily before your post.
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Unread 15-12-2011, 11:58
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Re: First Official 2012 Game Hint

Quote:
Originally Posted by eagle33199 View Post
Small balls are a possibility, but also consider the safety aspect of any game piece... a golf ball that gets shot out into the crowd (or at a ref!) could injure someone. If you've ever played tennis or racquetball, you know those can sting pretty good too, when hit hard!

Foam balls - like those used in many Nerf toys - can be launched pretty quickly, yet won't hurt much if a shot goes wrong. But those are probably too easily obtained and frequently stocked to be used as a FIRST game piece
What says they have to be shot though? What if they are going to be fed into a bucket of some sort instead of a goal on a wall.
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Unread 15-12-2011, 12:22
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Re: First Official 2012 Game Hint

Even if they are going into a bucket, don't you think that some team is going to have the bright idea that shooting them in from half a field away will allow them to score more points (as they won't have to drive right up to the bucket)?

I've been hit with the game pieces (intentionally or accidentally) for every game for the past 5 years. None of them have really posed an injury threat if something went wrong - the closest we got was with the track balls, and being as large as they were it was pretty difficult to get them enough speed to be really dangerous (which still didn't stop some team from trying in their effort to score quickly and efficiently!).
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Unread 15-12-2011, 12:47
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Re: First Official 2012 Game Hint

Quote:
Originally Posted by eagle33199 View Post
Even if they are going into a bucket, don't you think that some team is going to have the bright idea that shooting them in from half a field away will allow them to score more points (as they won't have to drive right up to the bucket)?

I've been hit with the game pieces (intentionally or accidentally) for every game for the past 5 years. None of them have really posed an injury threat if something went wrong - the closest we got was with the track balls, and being as large as they were it was pretty difficult to get them enough speed to be really dangerous (which still didn't stop some team from trying in their effort to score quickly and efficiently!).
Rules could be made to stop this, my point is I wouldn't count out any game piece.
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Unread 15-12-2011, 13:10
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Re: First Official 2012 Game Hint

FTC currently encourages students to lift bowling balls way up high. There are many ways in which safety can be instituted in an exciting way.
Recall the initial velocity rules from 2006.
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<S02> Muzzle Velocity - No ROBOT may throw a ball with an exit velocity of greater than 12 m/s (26.8 mph).
As a reference, a ball traveling at this velocity when leaving the ROBOT at an angle of 30º from horizontal with no spin will travel approximately 35 feet. A robot that violates this rule will be considered unsafe per <S01>.
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  #325   Spotlight this post!  
Unread 16-12-2011, 13:32
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Re: First Official 2012 Game Hint

And Remember, they had numerous palates of plexiglass, which could be used to enclose the entire field, protecting spectators and drivers alike...
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  #326   Spotlight this post!  
Unread 16-12-2011, 21:12
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Re: First Official 2012 Game Hint

Quote:
Originally Posted by Taylor View Post
FTC currently encourages students to lift bowling balls way up high. There are many ways in which safety can be instituted in an exciting way.
Recall the initial velocity rules from 2006.
No it doesn't, it doesn't specifically discourage it either, but the goal into which the bowling ball is scored is only 8 inches above the playing field and there is a ramp leading up to it. Furthermore, the bowling ball only weighs six pounds, so it would hurt, but anything that could make it do more than that would likely be declared a safety hazard and would have to be disabled in order to pass inspection.


Quote:
Originally Posted by zaphodp.jensen View Post
And Remember, they had numerous palates of plexiglass, which could be used to enclose the entire field, protecting spectators and drivers alike...
Just a word of caution, Plexiglass is acrylic, which shatters on impact; The palates had polycarbonate, which doesn't shatter under normal conditions and bends to absorb impacts rather than failing completely. I don't recommend using plexiglass on or near the robots for anything, but polycarbonate is a good material for FRC when it is properly used.
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Unread 16-12-2011, 22:56
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Re: First Official 2012 Game Hint

Quote:
Originally Posted by PAR_WIG1350 View Post
Just a word of caution, Plexiglass is acrylic, which shatters on impact; The palates had polycarbonate, which doesn't shatter under normal conditions and bends to absorb impacts rather than failing completely. I don't recommend using plexiglass on or near the robots for anything, but polycarbonate is a good material for FRC when it is properly used.
thats a bit ironic... what i wonder is how they get away with using plexiglass for the guard panels at hockey rinks... pucks can fly at pretty quick speeds, esp in a pro game and it bounces of one of the goal posts (net supports)... must be a puck thing.

speaking of which, what about puck like hockey game? that my require high speed sensors...
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Unread 17-12-2011, 10:14
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Re: First Official 2012 Game Hint

Quote:
Originally Posted by ratdude747 View Post
thats a bit ironic... what i wonder is how they get away with using plexiglass for the guard panels at hockey rinks... pucks can fly at pretty quick speeds, esp in a pro game and it bounces of one of the goal posts (net supports)... must be a puck thing.
Because they do use polycarbonate but the sportscasters call it plexiglass because it's easier to say.
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Unread 17-12-2011, 20:13
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Re: First Official 2012 Game Hint

plexiglass is easier to say than polycarbonate. Hockey would be a cool game to play but the only problem is that it would be tough for every team to have a rink to practice on.
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Unread 17-12-2011, 20:15
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Re: First Official 2012 Game Hint

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Originally Posted by mdiradoorian View Post
Hockey would be a cool game to play but the only problem is that it would be tough for every team to have a rink to practice on.
Regolith anyone?
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