Update #9

[Idan]

Here is the new update
http://www.usfirst.org/uploadedFiles...Update%209.pdf

[EricH]

http://usfirst.org/uploadedFiles/Team%20Update%209.pdf

They have noticed the different numbering. They have also made some modifications to the trailer hitch drawings for reasons explained in the update.

Oh, and the inspection documents are available. There are some other more minor things too, but you'll have to read the update to get them.

[Dave Flowerday]

Am I correct in reading the match sequencing part to think that the common practice of using switches on your OI to choose autonomous programs, starting positions, etc. before the start of autonomous mode will no longer work? Looks to me like the only way to provide program selection input to the robot will be by setting switches etc. on the robot itself. That sucks.

[Joe Ross]

Originally Posted by Dave Flowerday

Am I correct in reading the match sequencing part to think that the common practice of using switches on your OI to choose autonomous programs, starting positions, etc. before the start of autonomous mode will no longer work? Looks to me like the only way to provide program selection input to the robot will be by setting switches etc. on the robot itself. That sucks.

According to the following post on the FIRST forums, the DS data will be passed in Autonomous Disabled, so there won't be a problem. http://forums.usfirst.org/showpost.p...96&postcount=4

[Dave Flowerday]

Originally Posted by Joe Ross

According to the following post on the FIRST forums, the DS data will be passed in Autonomous Disabled, so there won't be a problem. http://forums.usfirst.org/showpost.p...96&postcount=4

Good. Thanks for passing that along.

[The Lucas]

During each MATCH, the Field Management System will cycle each Driver Station though
the following states:
* Autonomous - Disabled
* Autonomous - Enabled (for 15 seconds)
* Autonomous - Disabled
* Teleoperated - Disabled
* Teleoperated - Enabled (for 120 seconds)
* Teleoperated - Disabled

They should probably update this Q&A because it doesnt transition seamlessly from auto to teleop (it goes through a disable state for atleast 2 periods, ~0.04 sec)

[Jimmy K]

Originally Posted by EricH

They have also made some modifications to the trailer hitch drawings for reasons explained in the update.

Am I the only one who can't find the new drawings? I have only been able to find the old drawings. Could anyone post a link to the new drawings? Thanks.

Originally Posted by The Lucas

They should probably update this Q&A because it doesnt transition seamlessly from auto to teleop (it goes through a disable state for atleast 2 periods, ~0.04 sec)

The Q&A says that there will be a "negligible delay". 0.04 sec is fairly negligible for the drivers and players, which is probably what the asker wanted to know. This is compared to usually a 2-20 second delay during previous years. Of course, the Q&A should probably add those details to the Q&A post.

[dodar]

So after the autonomous is over, does that mean the payload specialist has to wait for tele-op to start before scoring again?

[David Brinza]

I'm not finding drawing GE-0940 Rev B. The update says it's in Section 8, but I don't see it there. Nor is it with the Game specific drawings in Section 6.

Am I misguided, or what?

[martin417]

Originally Posted by dodar

So after the autonomous is over, does that mean the payload specialist has to wait for tele-op to start before scoring again?

I don't think it will matter. Not much action will take place during the .04 seconds that things will be in the disabled state. Even balls in the air won't move much during that time slice. The processor might be able to add a few integers or a real number or two during those 40 miliseconds, but not much else.

[vhcook]

Originally Posted by David Brinza

I'm not finding drawing GE-0940 Rev B. The update says it's in Section 8, but I don't see it there. Nor is it with the Game specific drawings in Section 6.

Am I misguided, or what?

I can't find it either. The Game specific drawings have GE-0940 Rev A, but there is only the original trailer hitch diagram in it. I guess they must not have posted it yet or have hidden it with great skill.

Mods, should this thread be merged with the other update 9 thread? http://www.chiefdelphi.com/forums/sh...686#post813686

[Snake Doctor]

Good, other people are having trouble finding the new drawings for the trailer hitch. I thought I was just web site incompetent.

[GaryVoshol]

Has anyone asked Q&A about it?

[Jared Russell]

The presence of a disabled state between autonomous mode and teleop can have an effect on teams using single-acting pneumatic solenoid valves...

[David Brinza]

The new drawing has been posted at the end of Section 8 on the 2009 FIRST Competition Manual and Related Documents page.

Looks like a shorter (3") length of Andy-Mark chassis material (C-channel) is allowed for the trailer mount bar. Presumably this avoid interference of the mount with the hitch tongue given the larger (3/8") clearance hole in the hitch swivel.