Pre-Ship Scrimage Results

I wasnt fortunate to make it to one of these scrimages today, as we just had too much to do on the robot. However, I was wondering how they went. In the past, they have shown significant insight into the game. So, if anyone can post some reflections on them, I think it would be a great help to all. Thanks.

I was at the UTC Scrimmage today, and did some refing. Overall, I think teams were too worried about getting their robot working, to really play the game the way they intended to.
Anyway, some of the strategies used were:
Horde small balls into HP. Most balls wins
Use big ball. I only saw 2 teams do it succesfully, only 1 of them more than once.
Block chutes with moveable goals.
Hang on bar right away / prevent other team from hanging (The finals came down to the 2 robots who hung the best facing off).

Thats really it.
Here’s some pictures I got of robots and good action shots
And here’s the rest of them. These ones are dark or blurry.

In the Swamp shop 179 180 and 1251 got some full scale practice done. swampthing worked fine it caps and uncaps balls with no troubble. Spam had some control broblems, tho they blew us all away with their Holonomic Omni Drive. and 1251 got their Lasso device broken by swampthing and i helped them make an aluninum pice to make it work better.

GO TEAMS!!! I Had great Time An were All Glad you came

Thank you to team 179 for hosting that. It really helped us. We weren’t really having control problems exactly; we just moved things by hand so that we could be there to stop or catch anything if it didn’t work. The switches have been tested and work fine. The driving of the omni-directional drivetrain was a little crazy, but we tweaked it a bit. Most of the problems are getting used to driving the thing since it is very different than tank treads. Our drivers got a lot of practice on your field today and we think we got the science down, for now. Lets see if that is still true at UCF.

yeah we had problems but we’ll figure them out-- it’s not a spam bot without a million problems

but thanks swampthing for letting us test!!! spam luvs u guys

Unfortunetly, the scrimmage ran behind due to field problems, so they stopped the matches and went the finals after the teams had only two matches. The teams who didn’t get picked were kind of grr about that, understandably.

On a brighter note, my team managed to get both the lowest and highest score of the day!

Team 64 would like to thank the 10 teams from the Phoenix/Tucson area who came to our 7th Annual “Duel in the Desert”. The action was much better than I expected with almost a week to go before shipping. Several teams were able to gain axcess to the platforms. Three teams were able to hang. No one used the IR beacon in auto mode, though a few teams said they were working on it. Most robots (even the rookies) showed exceptional speed. A few teams realized how top heavy they were (tipping over was not uncommon especially when carrying the big balls.) Many teams used the pneumatic tires. Special acknowledgement to Team 1011 for their “Swerve2” driving system.

What suprised me the most was how little time two minutes is when you are trying to accomplish just a few things in this years game.

Ken loyd
Team 64

The one in DC went well, except for the radio channel problem. They had to be set manually, and some couldn’t get off the default channel.

There were at least two that did the big ball, and two that did the chinup. Here we are:
(bad lighting, fuzzy, but that is 449 haning)

We were able to just drive up the 6" step, but we also drive up balls, goals, robots, etc, so we need to do something about that (we came home and started fabricating). There was some big event there, which first was a small part of, so there wasnt much room and a lot of people.

Was that us… because we did a couple times in practice rounds… but then in the finals we kept losing pneumatic pressure and out main arm gear down sprocket broke in half :mad: Well anyway we were team 195… “The Ghetto Bot” (the one with PVC arms, orange gloves, and a zip tied on sign from our pits at nats)

Ok this is great and all, but what did you you learn about the dynamics of the game? Not to whine, but this thread has gotten a bit of topic, and us teams who weren’t able to make it to a practice scrimish would really like some insight into things.

How big of a hazard were the small balls?
How did autonomous go?
How much contact was there?
What strategies were sucessful?
What strategies weren’t?
Was hanging big?
How important were the smalls balls and the big balls?
What sorts of mehcanisms proved effective and inneffective?
What were the common characteristics of high scorign robots?
What were the biggest challenges for most bots?
How important was speed? Torque? Control?
Were alot of people able to get up the ramp?
… etc, etc, etc…

ok pretty much what it came down to was…

  1. Gathering balls takes too much time and proved not to be worth it
    2)who ever hangs wins

then again, most teams didnt have new bots or didnt have their new ones worked out, so we still have to wait and see

At DC I pretty much got the impression that the balls are actually very small, cuddly landmines. When all of them are dumped, all hell breaks loose on the playing field. It doesn’t matter if you have a little ground clearance or a lot of ground clearance, you start riding up on balls simply because they’re so grippy on aluminum. Teams were being dissuaded from hanging or grabbing yellow balls simply because a little red ball was smack dab in their way. This has gotten so bad that I’ve told my autonomous guys to work out a “ball-bocker” program that doesn’t allow the bonus point balls to be hit!

Hanging looks to be the major issue. Teams simply couldn’t pick up the yellow multiplier balls (thought that has to do with the fact that the balls weren’t exactly to spec), and very few could hang. Those that could hang generally went from the very top platform. Very few teams at DC were doing much of anything.

Nobody at DC had an autonomous, and it didn’t seem to matter.

How did autonomous go?
Although some teams had a semi-working autonomous mode, most didn’t have anything yet.

How much contact was there?
meh, not too much, especially compared to previous years.

What strategies were sucessful?
if you can shoot, and you can hang, you can win.

What strategies weren’t?
pushing balls wasn’t as big as I though it would be.

Was hanging big?
Oh yeah. When my team hung, we won (haighest score of the day! w00t!). Those 50 points add up.

How important were the smalls balls and the big balls?
Not as much as I thought, but still very important, particularly the small.

What sorts of mehcanisms proved effective and inneffective?
lots of the big ball grabbers weren’t working right (ours wasn’t even attached yet) however I think it’ll have to wait until the first regionals.

What were the common characteristics of high scorign robots?
hang, climb, and not break.

What were the biggest challenges for most bots?
Getting the robot to work. Not many autonomous modes worked, and there was a lot of unfinished robots.

How important was speed? Torque? Control?
I guess it all depends on the strategy involved. Balls were everywhere, so speed wasn’t a big deal there because you didn’t really have to fight for them. Most robots kept to their own side.

Were alot of people able to get up the ramp?
I didn’t see that many doing it.

One thing that I noticed that was majorly different from last year was the penalty system. It killed a lot of teams (we were penalized for part of our robot entering the corral, buzz had part of its bot out of the field and was penalized, lots of teams got into some trouble)

My team will be putting up information for individual teams (with their permission, of course) that we gathered at the scrimmage on our website ( is the main site, and out scouting database is and some teams have already registered and put their information up themselves. It;ll give you a better idea about what other teams are doing.

No, sorry. I didn’t see the practice rounds. I showed up at about 1pm. Team 839 did it a couple times, and buzz (175) did it once.

How did autonomous go?
Seems like most teams were making sure they could move in auto mode. Not much was programed. Buzz went forward a little and spun once. Other teams went forward also.
How much contact was there?
The contact happened when another team was blocking ball chutes, or keeping another bot from getting on top of the platform. Not nearly as much contact as the previous 2 years.
What strategies were sucessful?
One bot corals small balls, while the other hangs. Or the non-hanger keeps opposing robots from hanging.
What strategies weren’t?
Well, alot of teams pushed small balls, but not very well. Very few teams did anything with the large ball.
Was hanging big?
The biggest deciding factor.
How important were the smalls balls and the big balls?
If you can get 10+ small balls your in good shape to win. If you can add a large ball to that they you’re golden. A large ball with few small balls may not cut it.
What sorts of mehcanisms proved effective and inneffective?
Quality over quantity. Stick to one task and do it well. More specificlly for you: A simple hook to grab the bar works like a charm. A simple pincher for the large ball works well.
What were the common characteristics of high scorign robots?
They could hang. Or they could hold 5+ small balls.
What were the biggest challenges for most bots?
Geting up the 6" step. Alot tried, few succeeded.
How important was speed? Torque? Control?

  1. Control
  2. Speed
  3. Torque
    Were alot of people able to get up the ramp?
    By ramp, I assume you mean the tiny stairs. Only if they’re robot was narrow enough to get around the staionary goal.

Hope that answers your questions.

In DC we didn’t keep score…it was just 5 min practices in front of the huge crowd at the Engineering Week festivites in the National Building Museum

*None of us had effective autonomous (we’re working on it tomorrow!)

*The red balls were a problem…even a movable GOAL got up on one!

*Since it was practice rather than matches – there wasn’t really any game strategy revealed…everyone was just troubleshooting their own bots.

Lisa T :slight_smile:

I am very interested in small ball handling 'bots. How did they do? How did they do it? Were there any notable ball handling 'bots?

Also, out of curoisity, did any teams have a good way of getting the yellow balls on to the field instead of just nocking them off the tee?

-Andy A.

A few questions:
How effective were wings for aidiing in pushing balls into the corral?
What did bots with many capabilities focus on?
Did people push balls out of the ring on purpose and to what effect?
Were goal grabbers necessary for pulling goals out of corners?
Were robots that were holding a big ball attacked because they were valuble?


Do you mean to tell me that the teams who got up on the platforms were only the ones who went up the tiny steps and were small enough to go around the stationary goal?? None came in from the sides??

How did the hangers hang??? Did they go up the platform(s) and then hang or just reach in for the bar from the carpeted level?

no one at utc grabbed the bar from the ground. There were only a few teams that could hang succesfully EVERY round. Aces high’s bot was insane. Look out for them this year.

Another bot to look out for this year is 782. They hang like crazy and they are good at it. They are able to get around the stationary or go up the big step.