Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

How about the steel bars used to create the pull-up bar, or the supports for the kickball cage.. were they on the list last year?

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

there was a way to create the bar in the BOM last year. I'm not too sure what you mean by the kickball cage, I assume that you mean the ball corral that sat on top of the operator station. The supports were not included in the cheap BOM. If you mean the coral that was used for the human players to access the balls, that was also not included (I don't think).

This is a very strange BOM this year, the magnet really intrigues me, I think it has something to do with autonomous mode, I don't know why, just a feeling.

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

The total for everything listed is $117.95

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

There's not a big difference in rigidity between white sch40 and grey. The PVC polymer is pretty much the same, except for pigments. 1-1/4 sch40 dimensions are: 1.660 OD 1.380 ID (.140 Wall) (from Carlon's datasheet). The 24 caps and lack of tee and elbow fittings makes me doubt that the conduit is used for a railing...

Re: Advance Material List for the 2005 Competition Now Available!
 

Has anyone noticed that the yellow paint color is on the
opposite side of the color wheel for the purple glasses?
Is the project box for a purple beacon?

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

Just remember there may be other specific parts not listed. This may only be some of it.

Re: Advance Material List for the 2005 Competition Now Available!
 

Why would the yellow being on the opposite side of the color wheel have any effect on purple glasses?

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

Consider how a hockey goal is anchored to the rink. It is not a solid connection , but rather a magnetic one. There is a magnet embedded in the ice. There is also a magnet attached to the goal.

Perhaps there is some type of semi-movable object that will be anchored with the magnet?!?!?!?

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

Last year they supplied the balls and the beacon parts in the KOP and the year before, they gave Wire mesh samples in the KOP. So I agree there is definitely more to this than just this BOM.

For example they list a Connecting link for #35 chain. I'd assume the sprockets, chain, (and motor?) will be in the KOP. Something is moving around on the field this year!! Should be fun.

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

There would be more than 1 magnet on the BOM then.

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

That small polycarbonate sheet is also a bit strange (1 ft x 1 ft x 1/4 in), as well as lumber, I think the last time it was used was in 2003, to structure the ramp.
The magnet got me totally lost, I think something awesome is coming Saturday :)
Few people noticed that single 35 chain connecting link, it seems more like a joke (a sick one :yikes: )
Maybe that grease is to lubricate the polycarbonate rod, "need 16 inches", who knows if it will not serve as a pole for some parrot :p
And, I think the more important after the magnet, why would FIRST ask for elastic stop nuts instead of regular ones, perhaps some part of the field will be prone to rotation or vibration, or impact, or... :ahh:
Only 58 hours left... I can wait, I guess... Can't we? Course not! :D

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

Something moving in the field? I've only done this one year, but it seemed like there was enough damage last year with stationary field objects and four robots.

If somethings moving, it better keep out of the way!

Re: Advance Material List for the 2005 Competition Now Available!
 

Well, if there was a yellow line or target on a white or grey surface, viewing it through a purple filter would make the yellow black, and therefore very visible. A purple filter would be quite good for a sensor trying to optically detect the yellow paint.

Conversly, if you are trying to detect something against a yellow background, a purple filter would make the background appear black. Again, quite useful for an optical sensor.

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

I see magnets on your robot activating field objects... and as others have stated, something on the field is going to be moving other than the robots. Sounds pretty sweet to me already :]

Re: **FIRST EMAIL**/Advance Material List for the 2005 Competition Now Available!
 

I wonder why 1/4 inch polycarb was specified...Standard sizes for polycarb (standard as in available at the local Home Depot/Lowes/Ace) is usually 3/16 inch and 5/16 inch...Hmmm

Why expensive and hard to use wood screws that are not that much beefier then common deck screws (specified wood screw = 5/32 inch dia vs about 1/8 inch dia for deck screws)

Also, 4-40 screws are really small, those are the size that fit through the holes in the speed controllers, I wonder what they are for.

My vote for the magnets is that they are on the robot and they trigger some sort of auton mode or score points by activating reed switches or hall effect sensors on the field. (maybe what's in the box)

Good luck everybody!
-Andy