Re: First Week Regionals
 

More likely, they capped the tetra they started out with.

A couple of teams could do this at the Fingerlakes regional. 1126 [edit] and 1559 (awesome for a rookie)[/edit] capped a side goal, making the hanging tetra fall, giving them a total of 4 points and goal ownership. Team 217 could cap the home-center goal (the middle one in their endzone).
Team 494 (who we were allied with), in my opinion, had the second-coolest autonomous in the regional. They started out with a tetra, used it to knock off the hanging tetra, and then put the arm in position to be ready to cap the home-center goal. The huge advantage of this was that the 191-494-639 alliance had the home row in about the first 5 seconds of the match (191 knocked off the other hanging tetra).

The coolest autonomous was of course 237's, which came oh so close to capping a vision tetra.

Re: First Week Regionals
 

Those teams at Sacramento who capped in auto mode did so with the starting tetra on their bot.

Other observations from Sacramento...
Auto/Human Loader: It seemed to be a mixed bag of both, however if you auto load and the opposing alliance interferes with you, they get the 30 pt penalty - which is brought a lot of teams down to zero points. Unfortunately, if you play a clean game and your opponents get penalties and end up with zero point then you get the win, but take away zero QP. Kinda bites - but winning is the most important.

Stack High vs. Stack Fast: Stack Fast seemed to be what it takes in the end to win it all. 766, 1072, 245 (if I remember right) won mostly because they could all stack reliably and quickly. Whereas the Finalists 254, 1097, 114 struggled to keep up because 114 just played defense, while 254 and 1097 stacked.

Strong/Fast Bots: Toss up here, when trying to stack you may get pushed around so you had to be able to maintain a position, likewise you had to get those tetras quickly from the loading stations, so being fast helped. I didn't notice a huge advantage to having two speeds though.

6 Robots on the field: It seemed OK - very busy and hard to follow all 6 teams.

Scores: First half of Friday, had a lot of low scores due to all the penalties. By the end of Friday and into Saturday, average scores went up into maybe the high teens to low twenties, but some good stacking alliances were getting scores into the 40's and 50's. High was I think 78?

Robot Damage: Some teams had some complex mechanical systems from the get go - but all in all, most teams stayed operational at least in driving. Arms were the biggest thing getting damaged. Some bots flipped over like we did, when a bot with a now popular wedge design tried to push us over when stacking on the center goal. They got DQ'd. I think this scenario happed a total of 3 times in the two days. Beach Bots, 330, had a retractable wedge shape which was the smartest approach to using a wedge.

End Zone: Very few bothered to get back to the end zone due to the lack of space and more importantly the communication / coorperation between three drivers.

Re: First Week Regionals
 

during qualifaction rounds im not sure... but during elims you get 4 minutes from when the field CLEARS to get your bot on the field... so each team got about 10-12 minutes between each match to fix thier bot in elims which was great *or at least until finals you get that time*

Re: First Week Regionals
 

yes, we went for fast stackin and it worked. 766's ai took down a hanging tetra with 245 set themselves up at the loading station, and we started with a tetra. We had our home row always in about 25 seconds. Then we countered 114's possible pushing by capping on their row and forcing their bots back on defense while we got center. It never really was about stacking high, we never had those magical 10 tetra stacks like they did at finger lakes and vcu, only 5 at highest. We simply wanted control, because thats where the juicy row points are

Re: First Week Regionals
 

Don't forget 1159's great autonomous mode.

Re: First Week Regionals
 

Doug G is right. Our alliance thought we could win by having 2 fast cappers and a defensive robot. It seemed to work well for a while until we got to finals and came up against 3 high cappers. We had the weakness that even though we capped really fast and reliably, we couldn't cap the small goals more than 2 high. Even with that weakness, we went undefeated in the qualifying rounds (11-0-0, 9 avg pts) mainly because of strategy.

Coaches are big this year. The driver and myself (the operator) were too busy avoiding our teammates and bashers (which there are quite a few of this year) to think about where to go next. Our coach scoped the field and we did the work.

Communication between coaches is key also. Have a predetermined plan and try to stick somewhat to it, but also be open to adaptation at any point. We sometimes would cap 5 goals and then go and play defense for the last 30 seconds.

Getting back to home zone for the 10 points in not worth it unless the entire team in unable to cap (i.e. not designed to do it or flipped). Say you own your entire side, the entire middle, and a corner on your opponents side. You shoot back with 20 seconds remaining. In those 20 seconds, an opponent could cap the center goal or a middle side goal, thereby taking away 2 rows and 20 of your points. It seems to me that it is more important to keep capping till the end, it will net you more points and will keep your opponents from stealing from you.

The big thing to do in autonomous this year is to cap a corner goal with the starting tetra which also knocks down a hanger, thereby scoring you 4 points. When we were paired with 254 once, we owned the entire back line at the end of autonomous. We knocked down our hanger, they knocked down theirs and they capped the center home goal.

Another key point for strategy is to only cap where it helps you. It is pointless to cap your home corner goal if you already have a tetra in the base unless that makes it so your opponent cannot take it from you. Once you own the entire field, then you can start capping over your own goals, not before.

Penalties are huge this year. There were three big ones. Hitting your opponent while loading (30 pts), having the human player not stand in the triangle while loading your robot (10 pts), and not having your robot in the triangle while loading (10 pts). Many teams tied zip ties across the front of their robot so they would touch the triangle rather than trying to maneuver a wheel on. It ended up being iffy. For the most part, they got penalized. Either the judges couldn't see the zip ties well enough or (more likely) the judges were looking for a wheel/tread to be on the triangle. So, if you were planning on doing something like this, talk to a judge beforehand to see how they interpret the rules so you don't get penalized.

In my opinion, the game is much easier to score on the fly. Well, aside from penalties that is. A quick glace at the field will normally tell you who the winner is, or who is winning at the time. It is also much more fun than last year's game since defense is much bigger. Before, you really couldn't take away your opponents points. This year, you must be constantly aware of who owns which goal, how you can easily break an opponents line, and where everyone is. There were many times when we would cap a goal and then go on defense, pushing other bots around.

There's another point. Robots that capped well and had a strong drive train dominated since they could play both offense and defense. Multiple-speed transmissions didn't really make a difference this year, but maneuverability did. The 6-wheel design was quite popular. We found it to work very well for our team. It allowed us to have plenty of grip for pushing with an incredibly small turning radius due to a center wheel lowered 1/32". It seemed that about 60% of the teams used the kitbot gearbox, and I don't blame them. The stock gearbox has a great gear ratio to give you both speed and torque. We, unfortunately, couldn't use it due to the way we had to have the shaft go straight through our gearbox and have the motors be opposed to each other for our direct-drive transmission. I don't know about the other alliance, but in our alliance for the finals, no one had a stock box.

As for robot damage, anything requiring repair was self-inflicted for us. Mainly, we forgot that steel rivets will stretch aluminum holes. And we just wore our treads down due to overuse (and due to burning a 8 square inch hole in the carpet). I saw many broken arms. There's a lot of torque required to accelerate an 8.5 pound object held 8 feet our from your robot. 701 broke their arm a couple of times, but fortunately they could repair it. Others were not so lucky.

Well, thats about all I have to say. I hope some of this information helps those of you competing in the weeks to come. Good luck everyone and, for those of you going to SVR, I'll see you shortly.

-Tony K

Re: First Week Regionals
 

our arm fell almost fully extended holding a tetra onto one of the side rails :(. It unlinearized our linear bearings, sigh. We also went with the 6 wheel design and liked it. We had a custom gearbox with shifters, but didnt shift a lot.

Also realized just how important strategy is this year, i cannot stress this enough. Our plan that let us, 245, and 766 go lossess in elims was the result of 2 hours of thinking friday night at the hotel. When we had started qualifiers on friday, we originall were ranked 3 at lunch. However, teams figured out that our big capping capability was neutralized by a moderate pushing bot. So every match in the afternoon we faced alliances which sent their worst capping bot at us, with a decent amount of success that had dropped us to 14th by the selections on saturday. However with a strategy that our team got down from playing lots of rounds together we were effective in neutralizing pushing bots against us. Strategies like this were so effective against pushing bots that we really had no troubles getting pushed around in elims. So for other regionals, teams GET A GOOD STRATEGY!

Re: First Week Regionals *Merged*
 

At Finger Lakes I was surprised to see that most of the teams went to the human loader. We were one of the few teams that always went to the auto loader (229 also went exclusively to the auto loader). Many teams got pretty fast at the human loader, but the auto load robots were still faster (exception was 1507 which was a very fast human loader).

Stacking fast was definitely the key. In a few matches, the ability to stack over four tetras on the center goal was important but it was definitely not the norm.

237 had, by far, the coolest auto mode. They consistently got to the vision tetra (if a partner wasn't in their way). They were about 70% in grabbing the tetra they way they wanted and 70-80% in getting to the goal. Their trouble was they would get too close to the goal and actually place the tetra under the goals. I am confident they will get it working by their next regional.

Getting the hangers gave teams an advantage in the finals because they owned most of their row before human control started. The best combinations had two hangers down and the center ready to cap right at the beginning of human control.

I am now convinced that 3 good stackers can beat 2 great stackers and a pure defensive robot (I wish I had this revelation Saturday morning). The latter strategy works great in qualifying, but in the elimination rounds 3 stackers is the best way.

As far as damage: all the robots at Finger Lakes were exceptionally reliable and no alliance used a spare robot that I recall. We took minimal cosmetic damage and some bent wheels.


The end zone strategy was not used that much by the top teams. Stacking at the last minute seemed to have more of an impact.

-Paul

Re: First Week Regionals *Merged*
 

Auto/Human Loader – The human loader was more popular at Finger Lakes. There were many teams that would attempt to load at the auto loader and receive a penalty for it. The most common penalty for the human loader was the human player loading the robot without having both feet inside the triangle box.

Stack High vs. Stack Fast - Many matches were won with a robot that could stack a lot of tetras in a short period of time. Occasionally there would be high stackers vs. high stackers and a “Stackfest” would happen at the tetra goals in the middle row of the field.

Strong/Fast Bots - I think speed became a non factor during the main play of the game. The only reason to have a fast robot was to run across the field and stack at the very end of the match or to drive back to your end zone in the last seconds of the match. Strong bots were more important during the elimination rounds. They really helped most alliances win match.

Autonomous Mode - 237 came very close to stacking a vision tetra in autonomous mode. Our major problem was the placement of the vision tetras at the beginning of the match. Most auto modes delt with knocking down the magnetic tetra or starting with a tetra and stacking it on a goal using dead reckoning. I heard that at Finger Lakes 5-6 CMU vision cameras were destroyed and left in many pieces on the field

6 Robots on the field - I liked the 3 vs. 3 game play for this season. There was a lot of space on the playing field to move around in as long as you planed your strategy right.

What happened vs what you planned - Most strategies worked out well if they were planned well. The game play of the match would change every couple of seconds. You really had to pay attention to what happened on the field and then act accordingly to make your strategy work.

Robot Damage - Most robot damage happened on the base area of the robot. Most robots were protected well and suffered minor damage.

Scores - Most scores were in the 20 to 40s. Penalties really decided who won or lost the game in most cases.

How fast is the setup/take down of every match – Setup and take down of the match took about 2 minutes on Friday. On Saturday during the elimination rounds it took longer since they triple checked the score of each match.

Re: First Week Regionals *Merged*
 

--at PEACHTREE--
Auto/Human Loader – The human loader was more popular at Peachtree. among the better bots, auto/human were both used. very few used auto only

Stack High vs. Stack Fast - fast. the highest i remember was about 4 and that did not happen often. it was more impt to own a row

Strong/Fast Bots - fast was only useful to get back to the side in time for 10 pts, but strong was best because alot of robots played defense and if the robot wasn't strong, it didn't stand a chance

Autonomous Mode - i recall only one robot that actually found a vision tetra...but it did nothing afterward. most just brought the robot out and raised the arm. there was one team that capped with the starting tetra in auto mode and maybe a handful that got the hanging tetra. it was really boring actually.

6 Robots on the field - there was space but i didn't like it personally. there was too much luck (on alliance matchups) involved

Robot Damage - robots received alot of damage towards the end...things got rough but not out of control. one team's motor exploded and another team's bot started smoking. but other than that, nothing major

Scores - scores ranged ALOT. there were 0-0 ties and scores like 81-10. then, there were matches that were 26-25...it really depended. alot of times we noticed that penalties taht should have been called weren't...but there's only so much you can pay attention to with 6 bots on the field

Re: First Week Regionals *Merged*
 

and merging in another thread *winces* *is sorry*

Is there a number for how many robots fell? In 1/4th of the matches did a robot fall? More? Less? Did you get a domino effect?

How many robots expanded to a five foot base? How many of these lost large numbers of pieces? Were there any designs of robots other than your basic base and a stacking arm (such as a large blocking robot). How did these do? Were things like omnidrives and turrets useful?

How fast did the volunteers reload the loading zones?

Re: First Week Regionals *Merged*
 

I was watching the Peachtree regional webcast and once I saw a field attendant not place a tetra on the loader until a robot came to get one. Maybe there was an unsafe condition or something out of camera shot I didn't see, but from what it looked like to me, it seemed totally wrong.

Re: First Week Regionals *Merged*
 

Possibly, but more likely they just got caught up with the robots....If the field staff forgot we (refs) tried to remind them or just did it ourselves....there were only a few times where it was unsafe to load a tetra on the auto loader because the teams were pretty good at staying on the field....

Re: First Week Regionals
 

The strategy we developed in the hotel was for the last two rounds of the seeding rounds. Team 766 deserves the credit for our elimination strategy. Also, although we did get a lot of pushing because Spark was such a huge "hit me" target, the major improvement was in driver strategy rather then global strategy. Patrick Wang gave us some good pointers on driving Friday night that we really appreciate. Thanks Patrick!

PS: Obviously the robots sent to play defense wern't the "worst bots", they were very effective in stopping us for half of friday, and were valuable to their partners. I'm curious what role they'll have as the strategies evolve and gameplay changes.

Re: First Week Regionals
 

What did you all do differently during the elimination rounds?