There are EIGHT Discobots in the top 30 in robot skills right now...

Joey5729 · February 13, 2016, 9:20pm

So no matter how many of these teams get bumped, serious congratulations are due to Brampton for occupying almost a third of the slots in skills at once; I can’t even be mad they bumped me.

RZ2000 · February 13, 2016, 9:49pm

Canadian teams in general seem to be doing very well

Andrew_Chang · February 14, 2016, 11:23am

Does anyone know what types of robots they have?

tabor473 · February 14, 2016, 11:27am

Good ones.

3921 · February 14, 2016, 11:52am

The type that outscores everyone else.

kmindspark · February 14, 2016, 1:05pm

Probably single flywheels.

therestroyer · February 14, 2016, 1:26pm

A ninja robot

Michael_Nutt · February 14, 2016, 1:34pm

Most definately an 10/8 slip fly

jonathandamico · February 14, 2016, 1:51pm

Probably flamer thrower

David_5839A · February 14, 2016, 2:17pm

NAH, dual puncher

Michael_Nutt · February 14, 2016, 2:22pm

Pretty sure this is a 1104 leak.

holbrook · February 14, 2016, 4:27pm

Well, as some people love to say, WD-40 isn’t a lubricant per se, so you’d probably be good. Better post in the official Q&A, just to be sure.

/s

SamuelC_7842D · February 14, 2016, 4:36pm

The red alliance is 1104G&Z.
The video is from 2 months ago, so they may be completely different now. I really don’t know what they are now.

Vex_9185 · February 15, 2016, 5:59am

Or perhaps leaving the “other side’s” preloads until the end of skills. I think that would save a bit of time, since the 5 seconds aren’t wasted. It would still require in-depth planning and almost flawless execution.

And I’m wondering… what if one were to record a 340+ robot skills run and replay it as programming skills? It might be possible if the person had a good recording program/a lot of runs…

tabor473 · February 15, 2016, 9:01am

Infinity Minus 1:

But with all seriousness, the key to a 439 score in skills is a very, very high fire rate with perfect accuracy and a very fast drive base. (In other words, a robot basically designed for only skills and driver control in matches without a lift.) There are a combined 320 points of preloads for both red and blue. If the 1104 teams had an 0.3 second fire rate with 2 human loaders plus 5 seconds to drive to the other side, that would leave over 35 seconds to score the other 120 points (assuming perfect preload accuracy, which 1104 came pretty close to in this video: Given that each stack of balls is worth 25 points, that is 6 stacks of balls minus 1 if it missed to score 120 points. 6 stacks in 35 seconds means 5.8333 seconds per stack. If we assume an 0.3 second midfield/up close field scoring ability, which did clearly exist in the video I linked above, that is 1.2 seconds for shooting the four balls, which leaves 4.6333 seconds to intake a stack and get lined up. If they have a full-stack intake and are careful not to bump over stacks while driving to the other side (or if they are able to intake the stack in the center of the field while driving to the other side,) that would mean they are able to intake 4 balls in under a second, leaving an average of 3.6 seconds to get lined up. With an autonomous line-sensor allignment system as I know some teams have already implimented and a very, very speedy drive, this is quite easily possible. Obviously it would take hours upon hours of driving practice, but it is not as if they warp the laws of physics to achieve their high scores in skills. Obviously this is all speculation, but it means that a 439 point skills run is possible, and if it’s possible, there have to be multiple ways to do it (at least in VEX.)

So this analysis is actually pretty good. A few things that jump out though, the assumption that they are skills only robots is pretty strange. Historically the winning robots at worlds have always been some of the best in robot skills
2915 sack attack
21 toss up
2915 skyrise

Also line sensor alignment sounds extremely slow. The driving is all manual to the best of my knowledge. Also the funniest thing that you said wrong was in the note of driver practice, 1104m hadn’t driven the robot until that day.

And obviously 1104h had to deal with crazy high latency, hence it’s significantly lower score.

Michael_Nutt · February 15, 2016, 10:23am

Although I agree that good competition robots can do well in skills, I think a robot that is built for the sole purpose of being the best at skills would be the best at skills, but not very good in competition. For instance, a robot with a 6 motor flywheel that ratchets to 3 seperate 2bps linear punchers could do driver loads at a rate of 6 bps, which is incredibly fast and would give them a ton of time to do field balls. Then, if they had a 4 motor turbo chassis and a 2 motor intake they could do field balls extremely well, and all of this would create the best skills robot ever. However, if this robot competed in a competition, it would have an easily stalled chassis and no lift, making it a good competition robot, but definately not the best.

2382 · February 15, 2016, 3:33pm

I don’t think these robots are only built for skills because a robot that can consistently grab and shoot a pile in 5-6 seconds will be a very competitive robot in the competition

alex531 · February 15, 2016, 5:27pm

Infinity Minus 1:

Thanks! With that coming from you, it’s almost like my post made some minimal degree of sense.

That’s pretty incredible that team 1104m had no driver practice. Even with hours of driver practice, we were only able to score 275 in skills.

The sensor alignment is actually quite fast. The robot would theoretically whip around as soon as it could detect the orientation of the white tape, aiming itself strait at the goal. A particular team in a different country (I have agreed not to reveal them) used a similar design to this that I am not allowed to fully disclose, and did quite well. They were able to align with shockingly close to perfect consistency anywhere on the white tape in well under a half a second (with a 6 motor drive.) You are correct about everything else though.

Again, I’m really glad I live in the US, as I won’t have to compete against 1104 until worlds if I get there. If they were in my region, I just might do First instead…

Don’t forget 1114 do First and is in Ontario. I cri

Luke323Z · February 15, 2016, 9:15pm

Infinity Minus 1:

Thanks! With that coming from you, it’s almost like my post made some minimal degree of sense.

That’s pretty incredible that team 1104m had no driver practice. Even with hours of driver practice, we were only able to score 275 in skills.

The sensor alignment is actually quite fast. The robot would theoretically whip around as soon as it could detect the orientation of the white tape, aiming itself strait at the goal. A particular team in a different country (I have agreed not to reveal them) used a similar design to this that I am not allowed to fully disclose, and did quite well. They were able to align with shockingly close to perfect consistency anywhere on the white tape in well under a half a second (with a 6 motor drive.) You are correct about everything else though.

Again, I’m really glad I live in the US, as I won’t have to compete against 1104 until worlds if I get there. If they were in my region, I just might do First instead…

Why use line sensors? Gyros are easier to deal with, more accurate and much more flexible.

victory5776 · February 16, 2016, 3:24am

Obviously they’re more accurate because position tracking with a gyro totally worked