Dec 16, 2008

NJ State FLL Tournament

Since Built On The Rock decided not to compete in FLL this year, I was asked to be a head ref at the NJ State Tournament, which was held on Saturday. This was my first time reffing, and it was neat seeing all the different solutions that teams came up with for the missions. Here's a few thoughts about the tournament and season:

1. This year's challenge definitely seems harder than those in recent past years. The highest score at the tournament was a 300 by the Robo Invaders, as opposed to last year's 400 followed by a 395. Also, I haven't heard of any perfect scores being made anywhere else yet... has anyone heard of one? The difficulty of this year's challenge doesn't seem to be caused so much by hard individual missions - many are simple push-objects-to-the-right-zone missions - but more by the sheer number of missions. There are 18 missions this year: twice as many as the number of missions in Nano Quest, and 7 more than in Power Puzzle. Many of them aren't all that short, either. It seems that the key to scoring high this year is to combine multiple missions per run.

2. I refereed half of the matches, and of all the robots I saw during that time and all the other time at the tournament, I only recall seeing one RIS robot. It's nice to see that just about all teams have been able to make the switch over to the NXT system.

3. One interesting change of rules this year allows teams to accomplish missions before they leave Base! So theoretically, a team could make a robot that stays in Base during the entire match, and uses some sort of extending arm to accomplish all the missions. However, I only saw one team make use of this rule change; this team had a scissor arm set up in Base aimed at a mission model, which the robot activated as it went to complete a different mission. The scissor arm then pressed a bumper on the model, accomplishing the mission. BTW, I should note that this rule change does not make it possible for teams to grab their robot without getting penalized... a Q&A (Ruling 14) specifically states that using any kind of "leash" that "tethers" the robot to Base for this purpose will not keep the team from getting penalized.

4. Probably the most unknown rule at this tournament was part of the Active Robot Touched rule. Because of the confusion with this rule, I thought I'd post about it here so that reading teams could make sure they don't get an unhappy surprise at their tournament. This rule first states that once an active robot (one that has been started) is touched, it immediately becomes inactive and must be taken back to Base. Then the rule says the following:

"If any models or strategic objects were being strategically moved by the robot at the time of the touch:
  • Those being moved from Base go back to Base with the robot, eligible for continued use.
  • Those encountered out of Base are taken out of play (off the field)"

This rule is quite simple... any object your robot is strategically moving from Base goes back to Base with the robot. Any object the robot started moving when out of Base gets taken off the field, if it's still being moved by the robot at the time of the touch. So for example, if a robot drives over to the Insulation models and starts pushing them towards the green grid, but then a driver grabs the robot and brings it back to Base, the Insulation models do NOT come back to Base, but must be taken off the field and therefore cannot be scored in that match.

5. The two-team mission this year seems to encourage the use of sensors, which is nice, especially since it's possible to find clever ways to solve it without sensors. However, not many teams attempted it, and I didn't see anyone use sensors to determine how to align the arrows. The one team I saw accomplish the mission used a mechanical solution; they added or removed pieces from their robot to make it turn one of the arrows the right number of times - great idea!

What are your thoughts about this year's challenge?

-Jonathan

5 comments:

Robolab 2.9 said...

Haha, these match my observations at a scrimmage we went to this past Saturday. I expected to not see many teams attempt the center mission, as you found in number 5; I was quite wrong! Turns out 4 of the 6 teams at the scrimmage (including my team) attempted it. However, if I remember correctly, we were the only team that were able to complete, and only in one round.

Also... it seems like other states' tournaments are being pushed earlier, while ours (South Carolina, USA) are farther down the road. Regionals are January 24 and State is mid-February. Any guesses on this?

Richard

Robodana said...

I coach an FLL team here in Southern Calfornia. The season is officially over for us with the regional being held at Legoland on 12/6-12/7. We received a 2nd trophy for robot design!

Although the team did not attempt the align arrows mission due to time constraints (primarily), the solution under discussion was to visually check how many "clicks" were required to align the arrow and then press either the "right" or "left" arrow buttons on the NXT the appropriate number of times with the program recording the count. Upon pressing center orange button, the robot would then leave base and supposedly click the arrow over for the recorded count.

Robodana (Team 6049)

Star Trek: The NXT Generation said...

We discovered exactly how the "Active robot touched" rule works the hard way. At the tournament. We lost the buoy twice because of that.

We had a similar solution for the Find Agreement mission to Robodana ^, but we didn't use it because it took up to 20 seconds.

Anonymous said...

I judged teamwork in San Jose. One team member told us how he designed the robot and the programs (all by himself, to the exclusion of other teammates), so that they could do the missions "without using any sensors!"

He made the "no sensors needed" remark very proudly as though he should get a bonus for his work.

The team did not score well in the teamwork rubric.

Anonymous said...

"It seems that the key to scoring high this year is to combine multiple missions per run."

I think the key to scoring high this year is also to make sure teams spend as little time as possible changing and removing attachments when the robot returns to base. I saw many teams take more than 20 seconds changing attachments, changing programs, and loading scoring objects before they run their robots.

Related Posts Plugin for WordPress, Blogger...