Date: Mon, 28 Jan 2002 23:50:54 EST
Subject: Fwd: [FRCtech2002] Digest Number 27


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There are 10 messages in this issue.

Topics in this digest:

      1. Re: Dimensions of pits?
           From: "frcengineers" <frcengineers@yahoo.com>
      2. Re: Tape measure question
           From: "frcengineers" <frcengineers@yahoo.com>
      3. Re: Solenoids
           From: "frcengineers" <frcengineers@yahoo.com>
      4. Re: Cable Loops for Gripping Goals
           From: "frcengineers" <frcengineers@yahoo.com>
      5. Re: Dimensions of pits?
           From: "frcengineers" <frcengineers@yahoo.com>
      6. Re: Cable Loops for Gripping Goals
           From: "frcengineers" <frcengineers@yahoo.com>
      7. Goal Interaction
           From: "frcengineers" <frcengineers@yahoo.com>
      8. Re: How do I connect optical sensors?
           From: "frcengineers" <frcengineers@yahoo.com>
      9. Re: Bearings
           From: "frcengineers" <frcengineers@yahoo.com>
     10. Wall height
           From: "pennrobotics" <jlangfeldt@phm.k12.in.us>


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Message: 1
   Date: Fri, 25 Jan 2002 18:47:57 -0000
   From: "frcengineers" <frcengineers@yahoo.com>
Subject: Re: Dimensions of pits?

> What are the dimensions of the pits? And also at what percentage of 
a crate filling up the pit area, would an judge tell the team to move 
the crate out.  This crate would be used as a toolbox/storage shed.

A)  See response #539.  FIRSTsnow




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Message: 2
   Date: Fri, 25 Jan 2002 16:27:09 -0000
   From: "frcengineers" <frcengineers@yahoo.com>
Subject: Re: Tape measure question

> It is disheartening to see the same questions being asked with the 
> same lack of answer being given.  A team has asked for a simple yes 
or no answer to the question, can a tape measure or similar device be 
deployed across the field into the home zone?
> 
> Your answer is always be aware of the entanglement rule.  BUT WHY 
> CAN"T YOU TELL US HERE AND NOW WHETHER OR NOT THIS WOULD BREAK THE 
> ENTANGLEMENT RULE?
> 
> Do the judges have to see what happens if a robot rolls over the 
tape measure?  If so does this mean that if in one match nothing 
happens it will be legal but say in another match a robot does 
get "entangled" (whatever that means) it would be considered illegal? 
Can we build things onto our robot that are specifically designed to 
entangle us on any telescoping thingy from another robot...so that we 
can run over someone's device and claim it entangled us?

A) A tape measure or similar device would violate the entanglement 
rule.  FIRSTsnow




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Message: 3
   Date: Fri, 25 Jan 2002 20:33:45 -0000
   From: "frcengineers" <frcengineers@yahoo.com>
Subject: Re: Solenoids


> Can we attach 2 cylinders to one solenoid?


A) Please direct all Pneumatic questions to fhord@hpeco.com which is 
listed in the Manual in Appendix F.

----
FIRST MRT




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Message: 4
   Date: Fri, 25 Jan 2002 16:21:52 -0000
   From: "frcengineers" <frcengineers@yahoo.com>
Subject: Re: Cable Loops for Gripping Goals

> Can a steel cable loop (retractable)be used to attach the goals. 
The diameter of the cable loop would not exceed 12".

A) The answer is yes if the steel cable is in the Kit of Parts, the 
Additional Hardware list or available from Small Parts AND the cable 
loop only grabs the 12" steel nipple pipes AND that the Referees do 
not consider your loop an entanglement issue.  FIRSTsnow




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Message: 5
   Date: Sun, 27 Jan 2002 23:58:35 -0000
   From: "frcengineers" <frcengineers@yahoo.com>
Subject: Re: Dimensions of pits?

> What are the dimensions of the pits?  And also at what percentage 
of a crate filling up the pit area, would an judge tell the team to 
move the crate out.  This crate would be used as a toolbox/storage 
shed.

A) Please read response #539.  FIRSTsnow




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Message: 6
   Date: Fri, 25 Jan 2002 19:17:39 -0000
   From: "frcengineers" <frcengineers@yahoo.com>
Subject: Re: Cable Loops for Gripping Goals

> Can a steel cable loop (retractable)be used to attach the goals. 
The diameter of the cable loop would not exceed 12".

A) Assuming the steel cable is available from the Kit OR the 
Additional Hardware list OR Small Parts, yes if you grab the goal's 
12" pipe nipples and the Referees would not look at your device as an 
entanglement issue.  FIRSTsnow




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Message: 7
   Date: Mon, 28 Jan 2002 00:13:29 -0000
   From: "frcengineers" <frcengineers@yahoo.com>
Subject: Goal Interaction

We have been flooded with questions regarding interaction with the 
goal.  We have previously stated that we would allow a robot to push 
on the vertical surface of the stainless steel edge around the upper 
and lower plywood decks.  We will also allow a robot to push on the 
lower surface (edge) of the stainless steel angle that surrounds the 
upper plywood deck with a surface/device/material angled at 45 
degrees or more from the horizontal.

This deviates from our initial thoughts.  Caution is advised, 
however, because devices like this that damage the goal will be 
disallowed at the competition.  FIRSTsnow




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Message: 8
   Date: Fri, 25 Jan 2002 19:45:39 -0000
   From: "frcengineers" <frcengineers@yahoo.com>
Subject: Re: How do I connect optical sensors?

> I tested optical sensors and found out that its output is 12V or 
> more (what ever input is).  So that means I can not connect it 
directly to the robot controler.  Then how should I connect it to 
robot controler?

A) Please see Figure 2.4 of the Robot section of the manual, page 
12.  FIRSTsnow




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Message: 9
   Date: Fri, 25 Jan 2002 20:49:37 -0000
   From: "frcengineers" <frcengineers@yahoo.com>
Subject: Re: Bearings

> Team 776 would like to know if a "lazy suzan" bearing configuration 
> would be acceptable under the "any size, any type" bearing rule.  
Do the bearings have to be constructed under a certain method or by a 
> certain company or is any bearing by any company of any size and of 
> any type acceptable?

A) Any bearings, any amount, any size is exactly what it means so 
yes.  FIRSTsnow




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Message: 10
   Date: Sat, 26 Jan 2002 16:47:53 -0000
   From: "pennrobotics" <jlangfeldt@phm.k12.in.us>
Subject: Wall height

What is the height of the wall that the human player stands behind?  
Is it 7 feet?




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