/sci/ - Science & Math

What are the rules and restrictions of the contest? Ionized water sounds cool, nobody would really expect it.

Diamond-tipped buzzsaw arm

Just make it into a giant wedge that flips everyone over.

OP here, I just discovered that it must be constructed using legos.

>>10784476
This is a bad idea, you would need to apply a lot of force to instantly flip a heavy robot.

>>10784481
Gay

>>10784468
would a magnetic fuck with the internal computers?
or some magnetic pulse that interferes with controls?

>>10784485
Not sure why you think it won't work. If you look at Robot Wars and whatnot you'll find that wedgebots were pretty OP in the first seasons.

Later people started developing shit like invertible robots and self-righting mechanisms to counter them.

But in a random tournament that probably won't be the case.

Anything that tosses acid because then the other competitor couldn't touch it and make modifications later in the tournament.

>>10784490
I though about this, but wouldn't the robot commit seppuku aswell?

>>10784496
They could just neutralize it with a buffer.

arm it with a glock 19

You can't use illegal weapons like that

Make a robot with a reciprocating piston and a dildo mounted on it because this kind of competition is both stupid and boring

>>10784468
Depending on weight class.
Make it out of high-density polyethylene. Same shit as cutting boards. I'm yet to stab a knife into one and have it stand jam in.

Then basically you just want to copy Tombstone.
Except his blade at the mount. Tomb stone has less than 0.08 width around the hole. No, not plate thickness. That's for distance of a mounting bolt.
This is a pivot. You want 0.5 width around it, or It'll just snap.
Tombstones blade is a fucky sort of bisalloy 600.
So 570 - 640 HB factor.

use a supercapacitor bank to create small explosions at the business end of the robot

>>10784536
hmm this

>>10784468
A diamond-tipped pick

if you go the water route, ramp the pump power up and down so there's a large area that actually gets splashed with water

>>10784468
A grenade launcher

https://robotwars.fandom.com/wiki/Category:Weapon_Types
just a wiki of weaponry designs

>>10784481
so a hammer design might actually be effective?

>>10784741
Why tho?

It's 3 choices.
Tombstone.
Bronco.
Minotaur.

Or in layman terms.
Bar spinner. A fucking hectic floor jack. And a ip spinning front barrel on fuck all chassis(canter levered)

>>10784468
Oh, and magnets on the base is always a good stability option. If you're doing steel flooring.

Build a nozzle that takes three hoses with a central stream and two rings around it. Feed liquid nitrogen through the center, an antifreeze (like propylene glycol which is non-toxic) through the inner ring, and water though the outside ring.

Call him "Mister Freeze and Vice Versa"

>>10784752
not familiar with american bots so had to google
horizontal bar spinner
flipper
drum spinner

what's the benefit of exposed tyres vs enclosed tyres?

>>10784771
You're a genius, you even gave a name with the idea

>>10784785
Have you even got the rules yet? You can bet your arse they're going to use one of the leagues rule sets.

>>10784785
No problem, mang. Just make sure he can turn quickly, nothing else should have any range.

whats the idea with different controller styles?
I see the typicalbox with levers and buttons but also ones that look like a gearstick?

>>10784785
Hang on.
>>10784771
And this does what? Have you seen how long it takes to cool normal acid battery to stop charge? Leta lone lithium.

the nuclear option

>>10784835
In today's news, local university dorms have been unsafe for housing students as smoke alarms mysteriously disappear ahead of their robot combat event.

>>10784835
Percussive shaped charge on the end of a hammer?

>>10784481
>lego
a subwoofer

>>10784847
Almost been done before. Just needs the shaped bit.
https://www.youtube.com/watch?v=vB9IdhcFAvY

>>10784468
Do minotaur but with protection in the wheels and replacement parts

>>10784481
Oh, did they say you cant melt down Lego?
You're in Uni. They're meant to let you think outside the box.

>>10784852
maybe they're glued?

>>10784853
I imagine a lot of these people die or are at least seriously injured.

>>10784868
then a sonicator will do

>>10784870
Duh

>>10784870
Think the only death was a few years ago. Everyone warned him it was too much, those that didn't doubted he could swing the hammer.

Make it drive around with a spark gap radio on it would fuck with all comunication.

Or build a tesla coil on it and make your robot surrounded in a faraday cage. If the sparks dont get them the inteference sure will

>>10784817
Freezes the servos, namefag.

>>10784481

I did this in high school. I used to have the pictures but alas, not anymore. Here’s what I did:

>make a rectangular frame with two front wheels on the outside, with the axles extending through the LEGO holes to the inside.
>put mini L pieces on the axles to act as cams, actuating a large front fork that is on a swivel connecting to the rear of the car.
>as the car drives forward, the cams on the wheel axles turn, this repeatedly lifting the front fork and depriving your opponents wheels of purchase on the ground.

I beat everyone.

>>10784468
Punching arms. Blunt force/throwing is the enemy of the bricked toy contraptions.
I had one of these as a kid and they give quite the bopping.

just make it vibrate really hard so it just skitters around

you won't defeat anyone but you'll be the last one standing

>>10784875
Yeah, myfag. Didn't see we were working with Lego's. Probably going to be loads of openings.
Sucks for OP his uni found a way to make robot fighting child safe.

I at least hope Lego Technic can be used structurally.

>>10784892
there used to be metal lego too

>>10784896
Can't even find it on Ebay, bugger.
I'm not familiar with their parts. But there's got to be something to rip apart that's got a Lego logo on it, that's game breaking.

>>10784892
>myfag
Newfag

It should be able to stop even a mars rover. The wheels will freeze almost instantly and the floor will lose all traction. Shit will be cash if OP delivers.

>>10784909
might not have been actual lego though

>>10784913
So it supercools the propylene glycol so that it freezes after splashdown?
You should have said that with your post. I think laterally, but that's gotta be a stretch to confer for anyone.

>>10784481
>perchloric acid syringe pump
>glue on legos
>mount to legos
>actuate with proprietary lego electronics

>>10784874
This would probably be the most effective

what type of contest is it?
mele, one on one combat or something like robot sumo
https://www.youtube.com/watch?v=6lZtq3UJguw
https://www.youtube.com/watch?v=rthMiqFCiBA

>>10784876
unless they wedge under you first

>>10784943
I remember thinking robot mice mazeing was peak fine tuning till these things were shown to me.
The matador ones are a headfuck of sensory input and if elseing.

>>10784771
>>10784785
BTW if you need unpressured vessels because of the rules you can use an air pump to push the liquids into your nozzle.

Pic somewhat related

>>10784468
>So my university is holding a battlebots tournament
wtf

>>10784960
see >>10784481

>>10784959
Doesn't the vessel become higher than atmospheric if you do that Anon?
If the rules are as autistic as I, then you're going to want to use an air vacuum.

>>10784930
OP got it no problem. The water and antifreeze also insulate the liquid nitrogen stream allowing it to travel farther.

>>10784974
For every good plan there's a neigh sayer. For every bad plan, no body question it.
My only other concern now is that this is Uni level. So the servo's are probably going to be run off some sort of transformer.
Doubt stock Lego can handle too much. But it's got good chance of running hot.

>>10784972
You are technically correct, but I think those rules should just apply to an inspection. What mechanism would you use to eject the liquids using a vacuum? Something like an aspirator in reverse?

>>10784983
Blow by vacuum. Pass air over an orifice it creates a low pressure.
Basically your pic, but a T piece instead. (angled in flow direction)

>>10784988
That wouldn't eject anything from the nozzle if you're using a vacuum and it violates the same technicality if you're using an airstream

>>10785000
The method is literally called "air vacuum".
Yes, it's convoluted. But Killing vector field misses the mark by far more.

>>10785000
Not for airsteam. As "pressure vessel" because it's air in a open ended straw.
Sorry, been up for days.

>>10785008
Then will only move the liquid into your vacuum chamber.

>>10785016
The hose is also a vessel

>>10785066
It sucks it up into the jet stream.
A opened hose can't be a pressure vessel. As it cannot not maintain above ambient pressure. It may run some pressure when in operation. Bit it cannot store it.
But your push pump potentially can. Depending on pressure creator leaving an air lock. Between the pickup, and pump. Literally only a head of how tall your straw is. But it's technically a sealed system.

>>10784501
Have a really tall antenna on it, with the antenna and its internal controls shielded from EMF, and a shield under the top of the antenna

a sledgehammer twice the weight of the robot connected to a very torquey rotor

>>10785109
err make that half the weight

>>10785082
>It may run some pressure when in operation
That makes it just as much of a pressure vessel as a wash bottle, dipshit

>>10785190
Yeah, as not one. As a wash bottle takes away volume from the container. It doesn't add pressure into it.
I know pressure vessels. It's in my job title, and I've got tickets for making them.
>A pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure.
A bowel may be a vessel. But it cannot be a pressure vessel until it has a seal.

>>10784501
just shield your robot you fuckin brainlet

>>10785245
>Imagine being this retarded
Then your entire argument is invalid. The design I proposed is basically a wash bottle.

>>10785295
Yes, But I preceded this with "If their as autistic as I".
And you agreed to those terms. You have no one to blame but yourself.

>>10785245
what are you trying to do to seals, bruh

>>10784468
>>Ionized water could fry the boards
>>Blowtorch could cut much better than the petty flamethrowers they use on the show.

useless

best would be greasy foam or oil to immobilise wheels but idk if its allowed

plus wheel rotating upwards with electrocute effect

>>10784481
>Legos

use blowtorch then

>>10785415
probably banned

>>10784468
does OP have a weight limit yet?

>>10784485
Actually, "Flip you over" bots have proven one of the most powerful strategies in these competitions.

>>10785008
>Killing vector field misses the mark by far more
What, namefag?
What do infinitesimal isometries have to do with anything'?

>>10785809
How about wedge them up then a top flipper to finish the job like old the firestorm?

Make a version of Blendo.

>>10785415
>>10785797
More like
>legos

use acetone lubricated drill then

>>10785303
>Continuing to be this retarded
That's nonsense and it doesn't make you correct or me wrong

>>10785901
Naming of functions that don't relate to it. He thought I meant a vacuum pump. Not a pressure passing orifice low pressure "Air vacuum" .

And as you know, killing field should slay, or have had slain something.
Yes, Killing field is kinda badass. But science isn't derived from thrash metal. So the distinction is still isn't too linear.

>>10784952
I never got that, so what do these flag things do? are they just there to mess with the censors?

>>10785937
*...sensors
>freudian slip.

>>10785922
It was a discussion of pure it is or isn't. Black and white definition of a pressure vessel.
The best you have me on is that your vessel can't possibly contain "significant" pressure.
And I'll say well have fun when your straws ice over and you've got a sealed round bottom flask with LN2 in it.

>>10785930
You are legit retarded. I'm the same person and if we're assuming that "pressure vessels" are not allowed then that wash bottle design is equally as valid as an aspirator and superior in the fluid delivered to the nozzle which is essential to the mechanism.

>>10785945
You dumb. You real dumb. I don't know why someone as dumb as you would want all of your dumb comments associated with each other as a monument to your stupidity.

>>10785937
Yeah, pure sensor fuckary. But you have to rock paper scissors.
Like a matador fighting a bull. You have to change what way from behind the cape he moves. Because the bull gets wise if he's dodging left.

Then there's also fake outs. Lifting left flag, then quickly shifting back to lift right flag.
The sensors have to either be good enough to pick speed and direction accurately enough to know the bot is still in the middle.of the silhouette. Or be able to determine via code that shenanigans are afoot.

>>10785964
Yeah, I was reaching there. But eh. What's an argument if you don't throw shit to see if it sticks.

>>10785965
Are there limits to the censors you you can use? I'd imagine a 360 censor array to accurately to detect, follow and map your opponent would be illegal?

>>10785953
>. I'm the same person and if we're assuming that "pressure vessels"
Aww, that's cute. You've given me a pet name. So I know when you're noticing me.
But you'd know if you'd hit that notification bell. Im sleep deprived so I'm not to aware of anything.

>>10785983
I pity your employer

>>10785978
There's properly different classes for things like IR, Scanning lasers, and Visual.
What I've mentioned on the sport is just from deduction of the 20 or so bouts I've seen.
Remember, if somethings not immediately obvious as to what it is, try random use cases and see if they apply. Eventually you'll hit near enough you get an ah-ha! moment.

I'm not a dick about specifications and knowledge sets for no reason.
We're all hear to know more than we did before.
So I teach conceptual knowledge. So that it affixes to a wide subject range.

Take the Metaphysics thread. Some drongo in there spewing it's a waste of tax money.
Well he obviously doesn't work in any leading edge field at all.
The research dept's are corner stoned on meta. It's how they provide 20+ documents that weren't asked for, and notarization as to why.

A sphere of solid tungsten carbide.

>>10785978
Why the hell can't I spell sensor?

>>10786019
I'd assume out of date Firefox?
My spell check has shat it's self.

>>10786026
No this is all on me.

>>10784931
l e l

>>10786000
Again, if you'd slot me into your RSS feed you'd know I'm a Boilermaker that's on the disability.
So, if you're Aussi, you're my employer.

>>10784481
use brake clean or some other solvent to melt their bot

>>10786278
Got to it before you >>10785919

>>10784468
The match is over when one of the robots is immobilized, so focus on that rather than smashing and cutting the opponent.

I'd fire big globs of melted thermoplastic (hot glue gun glue) at the other robot until it's stuck to the floor.

Mount as many airbags on it as you can and make a jihadi bot that goes full snackbar.

>>10786351
targeting?

what about a trap box?
https://www.youtube.com/watch?v=NX9vPZiAFpc

>>10784490
>engages the EMP!
>the opponent's bot dies
>so do all spectators with pacemakers
You might reconsider.

>>10787955
Kek, just as I was wondering about how much range a microwave oven magnetron has for similar purposes.

>>10784835
STANDING...ON THE EDGE....OF THE CRATER

>>10784468
Entanglement weapons are banned from battlebots, but probably not from this contest so use em. Shoot a sticky net onto the enemy robot or unspool fishing line and laugh as its wheels and weapons get entangled. Napalm is an interesting option. Instead of a regular flamethrower, spray burning shit that will stick to the enemy's robot
>>10784771
Alcohol stays liquid at lower temperatures. You can make poor mans LN2 using dry ice in alcohol. Super cold liquids like this don't experience the leidenfrost effect so they transfer heat very well. This makes supercold alcohol quite dangerous so be careful. Alcohol is also flammable
>>10784817
It makes plastic brittle and solder joints crack at cold temperatures. If you can get it into the inside, the electronics should die rather fast. As an added bonus, this will also make the polycarbonate windows of the battle arena brittle too.
>>10784959
or just use a pump!
>>10784481
Use a 3d printer to make your own lego blocks. Have a big 3d printed plastic part that interfaces with one lego brick. That what you are still using lego. Make magazine also had an article about reinforcing lego blocks for engineering prototypes. It is still possible to make Mr. Freeze with lego. Which lego version? If you know what your opponents are using for control this opens the door to hacking/jamming them.

>>10784468
tracked vehicle that has high enough tracks to flip over and still drive, add neutral steering if needed and a air cannon

>>10789256
>or just use a pump!
The liquid nitrogen will kill pretty much any pump you try to use and you'd need three pumps if you want to place them after the reservoirs

>>10784617
>stupid and boring
>not understanding why these even exist

Hint: It isn't for your entertainment.