FTC Steelhead scores 107 pts using INVERSE stacking - 9 stack capped

[@STEELHEAD-cy7jb]

NO PENALTIES. *for the stone possession limit:* Game manual 2 page 23 section part (b) states, "Stones and Capstones In the Foundation are exempt from the Control/Possession Limit." *for the definition of "in the foundation":* Game manual 2 page 10 section 4.4 states, " An object that is entirely within the upwards vertical extension of a defined Area’s boundary is Completely Inside the Area." This strategy has also been reviewed and passed by refs on the FTC Q&A forums. Also, our capstone is legal. It has material in each dimension. height is 3, width is 3, and length is 4

[@devin7551]

Dont tell my team i missed this in the manual. Team u didnt see the comment

[@carterstegg]

we thought about this but didn't think it would be legal, good job reading that manual :)

[@char8169]

teammate: what if we put the stone under the stack? me: the rules say you can't control more than one stone. teammate: oh...

[@ylexot007]

It was also discussed multiple times in the Q&A forum

[@gaoindustries8013]

However, once you lift the blocks from the foundation arent they technically not in the foundation anymore?

[@lizageorge8923]

Damnit it's too late in the season to steal this idea now.

[@STEELHEAD-cy7jb]

;)

[@CodexAdrian]

Damn I had been brainstorming ideas and it never even occurred to me to try to pick up the entire freakin tower. What about the handling more than one block penalty?

[@lizageorge8923]

@@CodexAdrian yeah I only realized that when I brought this up to my team as a joke lol. But in all seriousness, I don't know how this doesn't count; is the rule that you can't move with more than one block or smth?

[@tobyfenner9945]

@@CodexAdrian No penalty, check out the pinned comment

[@tobyfenner9945]

@@lizageorge8923 Stones and Capstones In the Foundation are exempt from the Control/Possession Limit

[@ratcastle598]

These are the nerds I fear

[@se_ndy]

S T A C K E D Edit: I didn't realize this was supposed to be professional, my comment is like the black sheep in here.

[@lucuszha9916]

The greatest mystery of life: Why are mecanum wheels so smooth and precise in ftc but so trash in frc

[@andrewz3449]

@Salvador Baray Their robots are larger, but fields are MUCH larger than the robots are proportionally. That, and longer match duration make defense, speed, and pushing power important. FTC bots take up lots more field space, so agility is more important for us. That's my take on it.

[@mikemorris840]

You have found not one, not two, but three gray area rules and combined them into this beast of a robot... phenominally done. I would also like to congratulate you on making linear slides that extend at least three feet tall that maintain stability. You ALSO got the clamps strong enough to support the tower from tiling forwards and crumbling. You guys clearly tought about so many aspects of this robot so carefully, I'm scared to have to face you as a west coast team.

[@devin7551]

Im asuming u took inspiration from recycle rush? Great robot. Super cool

[@venn8603]

The mad lad did it!

[@reindier3211]

This is actually genious! Amazing to see such an innovative building strategy.

[@mihailazar2487]

Almost a Year later I still come back to this video. This is just so 900 IQ Witnessing such pure, distilled genius is always inspiring

[@captainfin2352]

That is incredible. We are trying to do the same concept of understacking but ours is not nearly so fast. What material do you use to grab the tower and how powerful is that gripper?

[@STEELHEAD-cy7jb]

Captain Fin Our grabber consists of four goBILDA servos, two per side. We found that it is strong enough to lift 12 stones before the stack starts to tip forwards. The material we use to grip the foundation is pretty unique - garage door sealer. I don’t know how we initially discovered it, but we’ve found uses for it in every game since Velocity Vortex. It is super grippy though, and any other material we try just doesn’t compare.

[@devin7551]

@@STEELHEAD-cy7jb do you need to clean it often, wev been using dyceum and thats been annoying for us to do

[@STEELHEAD-cy7jb]

With the amount of dust in our robotics room, the garage door sealer attracts surprisingly little. We don’t clean it very often, and when we do it doesn’t make a very significant change. The compliant wheels get dustier lol

[@alexeum4994]

A little secret that we discovered while making our understack was that by providing a ledge above the first block, you don’t have to squeeze the blocks very hard to maintain your hold, you only really need to grab the bottom one. And at that point all you need to do is keep your grabber straight and the stack should keep itself upright

[@captainfin2352]

@@alexeum4994 We have been doing the same thing, but there are some issues with getting the shelf in between the stones sometimes. Regardless we will probably continue that and maybe look into using the garage sealer for the bottom stone.

[@ossifyn3221]

On today's episode of why is this in recommended feed

[@cole241]

The one and only it’s a robotics league. Super cool and you should check it out

[@nopparuj]

gaemez sad there’s no competition like this where i live.

[@joeLULW]

Nopparuj do you go to a high school?

[@redthechaotic1187]

Random Fandom this is vex right

[@drizzleandpour7819]

@@redthechaotic1187 no this is First Tech Challenge. This season is called skystone

[@mihailazar2487]

literal textboot definiton of this is BIG BRAIN TIME

[@ErichDressen]

Very nice! From team 15036.

[@mmckellar6417]

Nice job. Great design!!

[@breekloostra7108]

that was so smooth i’m jealousssss

[@jasonfellows12]

super cool! love this design! Isn't it illegal tho?

[@kiyanyacoob4181]

Jason Fellows Well yes, but actually no.

[@orcaprotector]

Tower takeover getting wild 😳

[@ruuken8955]

Ironic I was just at the FLL competition in Mineola and they had this set up

[@manavshah6831]

the thing is they cant put the capstone, but will they really need to?

[@zachsvitak5424]

how is your guys' capstone so small the minimum requirements for a capstone was 3x3x4 so I was wondering if your capstone is legal

[@daryoushwashburn8189]

My team did a similar design and we used a ziptie on the edge that would portrude into the minimum dimensions

[@bengarofalo2398]

It has material in each dimension, height is 3, width is 3, and length is 4

[@pabloutori6439]

How do you make your claw ? You have a project ?

[@unknownpaws]

This is a really good idea but isn’t that capstone illegal?

[@DerDarthenFritzster]

I had this idea but the engineers on my team couldn't get it to work...

[@VideonMedia]

That is mind blowing

[@andrewz3449]

Design is legit as heck May want to tune those PID constants though, looks like you're overshooting your turns in auto?

[@cookedpelvis4242]

We have since improved our autonomous movement greatly!

[@kaimaddocks5121]

That's incredible! A unique take on getting tall towers, I get most of the time but I'm intrigued, how does the robot grab the blocks from behind so neatly, I assume there's a small ramp but is there two wheels spinning it inward or something?

[@STEELHEAD-cy7jb]

Yes! In the video, our intake is visible facing the camera during the start of the autonomous period.

[@matthui166]

Wait that's not launching?

[@STEELHEAD-cy7jb]

We've been "called out" on launching before, so now we have zip ties that keep contact with the stone until it’s resting in the foundation. This has kept us solidly in the clear. The zip ties are visible in the video.

[@nic6909]

I hate this garbage launching rule so much

[@alexeum4994]

What slides are you guys using for cap? And how are you moving them?

[@STEELHEAD-cy7jb]

Alex Eum It is a linear slide that uses carbon fiber rods that slide along bearings. Everything except the rods and bearings we designed and 3D printed. The slider is strung with REV 3mm surgical tubing, and we hold it down with a servo until endgame starts, at which point it can spring up 10 stones in height. We bring it down with string that is tied onto the very top of the slider. It is flimsy but fast, which allows to cap really quickly.

[@alexeum4994]

That’s really impressive. We went the understack route too but are struggling to come up with a good way to cap so that’s a really great example of something effective

[@kaden4786]

No cap

[@pepe.prez.]

Alex Eum no cap

[@devin7551]

@@STEELHEAD-cy7jb very cool what made you go custom over existing options like misumi or rev sliders. What advantage if any do yours give you over those?

[@ibelthorns5610]

What motors are you using for the wheels?

[@bengarofalo2398]

Using goBILDA 5202 series 13.7:1 yellowjackets

[@victorb622]

Wait... Isn't it illegal to control multiple blocks at once?

[@liv0072]

Genius design but isn’t it Illegal to carry so many stones?

[@alexmcaniff6446]

That is so dope

[@xiaoyunchen8337]

wow!!! wow!!!!!! very impressive.

[@axidians]

Why is this recommended

[@Boxsteam]

Using the entire robot to move the bottom block into place seems pretty hazardous while carrying 9 stones, I would recommend adding servos on the base of the bot that can juggle the bottom piece into place while the rest of the robot stays still.

[@STEELHEAD-cy7jb]

This video is a bit outdated. Those servos have since been added to the robot. We call them "pincers", and they work great. Thanks for the comment!

[@Boxsteam]

@@STEELHEAD-cy7jb ye I noticed the date just now. Figured yall figured it out already, but thought I'll comment just in case, good luck!

[@STEELHEAD-cy7jb]

@@Boxsteam Hey thanks!

[@sashuprakash]

is that even legal?

[@TobyFenner]

It's legal to control multiple stones when you're inside the foundation.

[@bushytail7262]

@@TobyFenner Do you have a link in the Game Manual?

[@TobyFenner]

@@bushytail7262 see pinned comment

[@mihailazar2487]

NOPE

[@TobyFenner]

@@mihailazar2487 Manual 2 p23 (b): "Stones and Capstones In the Foundation are exempt from the Control/ Possession Limit"

[@quantumtoilet7301]

That BGM was ♂Philosophical

[@josephmeltzer2726]

Nice pulp fiction music

[@t_c5266]

That's cool. But the real winner was the bot bringing blocks

[@wtbchaos]

I mean this is impressive but I watched dataforce rack up 141 (world record) without using some like uncoventional method like this is CRAZY but there are better ways to get points in my opinion really good autonomous protocols are essential to setting records.

[@Salswrldd]

It was never in the building zone

[@fchm_2228]

I’m glad my team isn’t facing them😅

[@WillBilliam]

Penalties?

[@listentodave]

I agree, the shove at the beginning where they're moving 3 bricks would be a major, from what I've experienced anyway

[@gregharter8212]

@@listentodave Not in Autonomous. It could be in driver controlled.

[@gregharter8212]

@@listentodave Not in autonomous. It would be in driver controlled

[@enderbrine3000]

Recycle rush

[@nickmiller8314]

Lol

[@howlongismydesign]

Recycle rush