Attacking Where You Least Expect - Combat Robot Subdivide

[@MakersMuse]

You were a few mm away from my battery in that rumble! Really nasty bot, awesome work.

[@gtdgabriste1]

I watched this video Iike 3 times before I recognized your luagh @makersmuse. Was just coming to the comments to ask if that was really you and... yep... you should do more battlebot videos 😊

[@NikoxD93]

I know it's silly but this video was very relaxing backround noise to take a nap positive vibes, calm voice, people laughing and cheering, noise, and smooth music

[@EleanorPeterson]

That's not silly at all! You only get one life, so it's important to take pleasure wherever you can find it - as long as doing so doesn't spoil anyone else's day. Your comment is entirely positive and only adds to the 'feel good' vibe of this excellent channel. Have a happy face (🙂) and a big squishy Elli hug. Cheers!

[@Polymath2B]

Ha, that soldering iron bot is a hilarious idea. Would be fun to see it in action.

[@SkorpiosBattlebot]

Amazing hammer saw video

[@blacklight683]

0:10 i love how you can hear the saw charging i can even hear the wwe "watchout watchoutwatchout"

[@ubuntuuser]

Coming from a bit of a different robotics competition (FTC), but we fill all of our cable connections with tiny hot glue beads, and/or have tiny 3dp nylon mounts to stop motor and sensor disconnects. Maybe this could help with the weapon motor?

[@TrentSheather]

I hadn't considered how the rake angle on the weapon combine with the forks to pin the opponent during the hit and avoid a glancing shot, cheers for explaining that. Hopefully I can avenge my lost flipper motor and the next time my bot appears in a video it wont be entirely as a punching bag 😅

[@CoolAsFreya]

Featherweight and Antweight categories are so fun and wholesome!

[@Tobias-dp7xh]

when machining cfk, keep in mind that the dust is not only bad for you but also for your electronics as it is highly conductive. This might destroy your your cnc and shop vac over time. Just so you keep this in mind

[@fleetwingpone966]

the amount of engineering that goes into these bots is amazing

[@joshuaworley3898]

5:59 lol My brain hadn't listened to the values when you said how much these robots weighed and thought that I was looking at 2x6 with fairly large robots but no they are tiny things. Lol

[@basvermeer4209]

This robot hits like a scorpion

[@cheeserdane]

Orly?!?

[@matthewmcnaught9883]

Awesome video! I am so impressed with your robot building ability. I've built some 150g bots and Subdivide is a thing of beauty.

[@V.n.D]

This is really cool. The pushing power is impressive. The forks definitely also help with that by lifting up the front of the opponent.

[@mr.shannon6137]

I thought I would throw a couple of ideas out there for you. 1st thing is I don't know why this video was recommended. My past work is logging, and log homes. My biggest hobby is carving wood and rock. A few cheap items that would make brutal weapons: " Sabertooth" and "Kutzall" both make extreme/ extra course carving burrs for dremel type carving tools and die grinders. They are brutal looking and made of tungsten carbide. There used to be a carving attachment that got banned called lancelot. It's a chainsaw chain wrapped around a steel wheel. I'm sure you could easily fabricate something like that in smaller scale using a carbide chisel tooth chain with rakers filed down. All those would be fairly cheap and quickly destroy anything they touched.

[@BrokenLinkRobotics]

@mr.shannon6137 Honestly will look into those, good to have a perspective from someone outside of the robot hobby. Cheers!

[@petercarbin2077]

One trick I used on my drones on filing. Carbon fiber was to do it under runing water kitchen sink so to speak the water in the drain. Just takes the shavings right now on the drain.

[@austinclark3495]

That hit in the intro was absurdly violent.

[@andrecook4268]

Being grabbed by the wires in the rumble was the robot equivalent of being dragged around by the ear 😂 Devastated I couldn't make it - I've got both antweights ready and waiting for the next one!

[@Stylesidetruckguy]

This video is why I stay on this platform. I learned a lot about cf machining. Keep up the great work!

[@aydin5978]

I actually love that you show the manufacturing footage. Very cool!

[@rustyspider08]

Definitely looking forward to seeing your bots in action first hand on the 17th

[@jedalica]

I actually went and watched you at that Melbourne event after seeing this but forgot to comment it, I got a good video of you piercing the lipo of the horizontal bar spinner using Subdivide. You’ve definitely piqued my interest in making an antweight now

[@BrokenLinkRobotics]

Cheers, glad you're interested in the hobby. Melbourne guys have a Facebook page, probably the most accessible spot to chat with locals about things.

[@quantumview8151]

4:20 lmao, so much technology is easy to get and cheap because of the drone building community (brushless motors, carbon fibre, escs, recievers, batteries, carbon fibre tools, etc.)

[@JayPlaysEverything]

7:50 Tell me why homie put on a big ass fire glove then picked up the smoldering bot bare handed xD

[@stefanrabicano]

Is that Angus from Makers muse pulling Poker Face out of the box? Fantastic bot by the way - getting that level of hit out of 150g is great engineering, top stuff.

[@Alexander_Sannikov]

the boss robot at 11.30 has some amazing driving skills

[@Skracken]

I built a 150g hammer saw about 22 - 23 years ago. For the exact reason you mention, but 150g robots back then were barely armored and almost only pusher/wedges/lifters. I had no machining skills almost, so the weapon was 3 blades on a plastic hub stuck directly on the motor shaft. I have a video of it on my channel, without the weapon attached. Would have been too dangerous haha

[@josephparker79]

Maybe I missed it but how do you limit the N20 motor controlling the arm so you do not go to far and strip out the gears? I know servo motors have stops but how do you tackle this issue with a brushed motor? Thanks!

[@UglyGreenTshirt]

Sad that this comment got no attention. I would love to help but I have no idea as I’ve only built spinners. Hope you already figured this out as I’m 3 months late.

[@Lusidous]

It's beautiful to see this. I am working on building a bot very similar to this.

[@ryanmoore1531]

That's s great bot! I'd love to see a video showing how it's built

[@logical131]

Really enjoyable video I like how you explain the process and everything

[@lychiadventures8231]

dang..these lil battlebots really are adorable..

[@squa_81]

2:40 Using a Kevlar composite could've been smarter as the arm is expected to endure hits and violent impact. Carbon is quite bad a impact resilience and tends to have fibers shatter. Kevlar makes the tradeoff of less rigidity for a substantially higher impact resistance. It's even possible to get some hybrid rolls of kevlar/carbon fiber to have the best performance for your application. I would highly recommend looking for a material scientist or technician. They could help you. Happy day to you!

[@vorpalthefox]

what an interesting scorpion style build

[@TheLurker-XYZ]

They’re so tiny. I love it.

[@TradieTrev]

Good stuff; Love a fellow Aussie having a crack!

[@NorroTaku]

thats a cool arena design ^^

[@mw4222]

17:45 what kind of board was that? Seems like a brushless esc (from the three pads) but how does it heat up the spike?

[@BrokenLinkRobotics]

Just a solid state relay, on or off. Very cheap online

[@gtdgabriste1]

Wear gloves when touching hot stuff... Can i ask what escs you use for your n20s? It looks like you use one for both motors, but i need a good one for a single n20 motor. Any suggestions? Algorithm...

[@BrokenLinkRobotics]

I run a Malenki Nano, but Botbitz have some good miniescs. Alternatively DFrobot have integrated single units.

[@jonesso11]

I know it's a lot different but I would love to see a super heavy weight class of this robot.

[@wheresbio9328]

Most satisfying bot.

[@patrickmattin9609]

One initial question early in the video: why do you not like 2 wheel drive? I see where you're coming from, but I'd like to hear your reasoning behind it.

[@patrickmattin9609]

Excited for the melty too, I've been considering building one myself

[@gtdgabriste1]

I too would like to hear your thoughts on 2wd. Also 4wd with 4 motors vs. 2 and belts. Algorithm.

[@BrokenLinkRobotics]

It's just a personal thing. 2wd is not dynamically stable when going forward so likes to veer away, and can be squirrelly when turning as does not naturally scrub that energy as 4wd would.

[@antonliakhovitch8306]

​@@BrokenLinkRoboticsHuh, neat! Does redundancy play a role?

[@l8dawn]

wait a second I'm sorry, its a fairyweight?? that's wicked!!

[@DigitalJedi]

150g is an antweight in the UK and Australia.

[@l8dawn]

I'm just commenting at how incredible the engineering is at such a small scale... does it really matter that I'm using the SPARC terminology?@@DigitalJedi

[@DigitalJedi]

@l8dawn not at all! I'm very impressed as well. Just thought I'd add that for some clarity, as in those regions a fairy weight is a miniscule 75g.

[@BrokenLinkRobotics]

Yes 150g

[@Alexander_Sannikov]

why does nobody make massive counter rotating wlywheels stacked on top of each other to counteract their gyroscopic forces?

[@BrokenLinkRobotics]

There are exceedingly few examples of this working well

[@overmatchrobotics]

11:00 mechanical engineers on their way to fabricate the most mechanically advanced lifter possible:

[@Alex-yq2tf]

Would be cool if tossboss also extended the tossing forks out the sides!

[@diagonalcircle9553]

Excellent video and robot! But please get a polarisation filter for your camera (they are super cheap and eliminate most of the glare from the windows of the box. Can not wait to see more! Easy sub from me.

[@MorrisRobotics]

Hey, awesome design, but I have to ask, could you make a video in depth about the 150g Derive? I just have to see how you fit so much into a fairy weight.(Or ant weight I guess) Maybe about how you manage weight so well. I would love something about that. Thanks for building some awesome bots!

[@BrokenLinkRobotics]

Have been meaning to for a while, just haven't got around to it

[@lane9668]

Have you considered putting a small lifting fork on the weapon arm similar to Strikepoint? Unsure how your arm geometry/motor setup is to Strikepoint's, or if you have the weight budget for it, but having something to go for pins via getting them stuck on the rails is a nice backup plan if the spinner isn't playing nice.

[@BrokenLinkRobotics]

@lane9668 I definately have considered it but there is a downside. For the fork to touch the ground the spinners weight will be on it and thus not on the rear drive wheels, removing some traction. As the spinner is about 20% of my robots weight I considered it more pressing to keep driving up and maybe leave it for the future.

[@lane9668]

@@BrokenLinkRoboticsThat's interesting. I hadn't really considered weight distribution for something like this. I've been on a 2WD eggbeater design my entire combat robotics career (just really liked Minotaur, I guess) and it's really impressive how much more you have to think about when you start adding more and more elements like articulated arms/etc.

[@NorroTaku]

you would love pre preg carbon fibre you can mold almost anything with that

[@StarHorder]

antweight division my beloved

[@koenigsegg888]

Hey, I really like the look of your inlaid red in your clear top plate. What material is the top plate? How do you get such a neat inlay? I assume you CNC the profile, but how do you do the fill? Thanks!

[@BrokenLinkRobotics]

The text is a paint pen run along a machined text groove

[@koenigsegg888]

@@BrokenLinkRobotics ah, great! Thanks for the reply 😊

[@TeamJunkYardDog]

Very Nice Bot!

[@qualifiednot]

This is badass!

[@Chris-xo2rq]

Ziggo will always be the best designed battle bot

[@pauldeddens5349]

Heres an idea. Ive always wanted to do Battle robots, but ive never had the electrical knowledge, or community. But I love coming up with novel ways to destroy robots. What about a balloon spear? A spear that, using a CO2 cartridge, can rapidly shoot a spear that penetrates armor. And then inflated a thick nylon balloon at the end of the spear, ripping the internals to shreds. And then rapidly deflates with an internal cylinder that pulls the balloon back in. Potentially even using that backdraft to blow yourself away from the opponent. The only downsides I can think of are limited attacks, weight problems, and a huge weak spot where the tank is located. A good hit with a strong spinner or hammer could very well rupture the tank. Unless you shoot right before it hits. Maybe have an optional missile mode that deploys the entire cartridge to fire off the weapon incase of emergency. Assuming thats allowed, its basically a robot dart shooter at that point.

[@alejandra57]

heavy downsides aside that would probably be competition illegal due to safety hazards

[@Prayan__]

Did anyone else think that the plastic was way bigger at 14:30?

[@davidaugustofc2574]

Honestly lìke the pov of "smaller" creators on the subject, tho the other video's thumbnails didn't catch my eyes, hope your channel will grow from here

[@NikolajLepka]

now I'm wondering if you can make a bot with a thermite spike that impales the opponent, leaves the spike, which then ignites and melts the other bot

[@justinschaaf3092]

Probably, but would be hard to make it "reusable" as I don't believe you are allowed to "reload" the bot during a battle

[@NikolajLepka]

@@justinschaaf3092 oh it wouldn't need to be reloaded during the battle. Just a one and done thing

[@jacobpol8403]

could you put a vacuum on the 360 spinning robot to dump 100% of the energy into the opponent instead of flying back?

[@HybridSimulation]

I'm trying to make my own combat robot, but I don't now haw to desing and control my steering system, could you explain how you did yours??, thaks

[@BrokenLinkRobotics]

Not sure what size your robot is, but some robot ESCs have mixing built in so if you talk to it with a simple transmitter it will drive and steer as expected. Otherwise one may need to mix in the transmitter itself

[@DrBadvice]

i was kinda confused why you never went “vert mode” against the flip boss

[@learntostock3487]

i like to put all my armor on the inside and components on the outside so my opponent is confused and doesnt know what to do

[@connorbingel7134]

I’m curious. I’m running a 3lbs beetle and my armor choices saw bots/hammer saws is some steel “chocolate bars” that I’m just gonna rivet to my top panels instead of extra front armor. Do you think that would work? My other option is thicker aluminum panels but I don’t really think that will stop anything. My bot is like a flatter smaller division if that puts an image in your head

[@BrokenLinkRobotics]

A hard/bitey material with an air gap before the top pate is the ultimate option, historically baking trays were good at defending saws on feathers as the saw would bottom out before hitting the critical armour. Chocolate bars are good too as the saw may bit the edge instead of a clean shot. Aluminium is better than nothing but a poor choice for the weight it consumes, thick HDPE would be better if weight is a concern

[@Lux158]

Regarding your ring spinner, (the thing you showed at the end) couldn't you increase the traction by adding fins at the ring to "suck" the bot onto the ground.. it seems that it became a bit uncontrollable when spinning up (at least it looks a bit like it)

[@BrokenLinkRobotics]

It is not a ringspinner, but a meltybrain. The whole robot is spinning.

[@Lux158]

@@BrokenLinkRoboticscan't wait to see this, but could this idea help/work for your ring spinner or is it to "academic" :D

[@BrokenLinkRobotics]

@Lux158 The problem is the increased reaction torque from the air resistance of the blades may offset the potential grip against from down force.

[@gtdgabriste1]

While rewarching this video for the 20th time(I promise I am not a stalker) I see that you wired the weapon to the servo and brushless outputs on the malinke nano. I had assumed you wired the arm motor to the weapon output next to the drive outputs and controlled the position manually. I'll admit I haven't played with the nano much, can you elaborate on how you have this wired/ configured? Is the nano smart enough to treat the n20 like a servo? Is there a servo brain hidden somewhere in your bot? Are you controlling the position manually and just using that output just because? I assumed that output was just a pwm signal, did I read that wrong? I'm confused.

[@gtdgabriste1]

Wait... what? I see solder on left, right, and w2, but noting on w1 or w3... htf are you controlling the hammer motor? @10:48

[@gtdgabriste1]

Nevermind 10:48 Is not subdivide 😂... I'll shut up now

[@BrokenLinkRobotics]

@gtdgabristle1 The spinner motor ESC uses the pwm out from the Malenki, where the arm motor uses the third brushed 'weapon' channel. There is no position control, just motor torque like a drive motor.

[@gtdgabriste1]

@@BrokenLinkRobotics that is what I assumed, and how I wired up my all PLA tribute bot (thanks for providing the .step files). I got confused while folding laundry and watching your video at the same time. I paused it on what I thought was a pic of your reciever and confused myself when there was no solder on the weapon output. Sorry for the silly question, but thanks for taking the time to respond anyway.

[@Embers-qu8vg]

Nice fork design! Now I know why my robot keeps on giving glancing shots...

[@TrentSheather]

What are you using to keep the disc attached to the weapon hub motor? In the video it looks like it might just be press fit on, which I wouldn't have expected would stay on during impacts.

[@BrokenLinkRobotics]

Slight interference fit and JB-weld. Scuff the paint on the motor too for better grip

[@cnclordfpv9028]

The 3lbs bot im building has the same arm actuating system except im trying to use a brushless. however i cant figure out how to get it to actuate precise enough before it destroys it self. Any help or advice would be stellar!

[@BrokenLinkRobotics]

Gonna need more info about your mechanism. I actually just built a 3lb version of those robot myself and had success.

[@cnclordfpv9028]

@@BrokenLinkRobotics thats awesome. so im using a repeat compact brushless motor with the planetary gears. that has a smaller herringbone gear that meshes with a bigger gear witch has the arm attached that drives the 4 bar. i want to push a button on my MT12 to go to the "attack" position then when released go back to the "resting" position

[@BigYabai]

Armored Core 7 looking good

[@Handle1795]

Why do you use a n20? Motor to operate the arm, is it just to save space?

[@BrokenLinkRobotics]

@chriahorne1795 yes, it's a very powerful motor for the space and weight it uses. Also more durable than a servo

[@Handle1795]

​@BrokenLinkRobotics Does it not shred the Gears? If you don't take your finger off the button, wouldn't it just keep trying to spin?

[@BrokenLinkRobotics]

@chrishorne1795 motor dosent have the torque to do that. Just stops

[@MrinalR-h7b]

anyone have any idea on how hes controlling the arm like the electronic setup ? i was planning on building a similar bot and wanted to know

[@BrokenLinkRobotics]

Just dumb motor power from the transmitter stick

[@MrinalR-h7b]

throttle stick? @@BrokenLinkRobotics

[@Why-Not-Robotics]

well guess I am going to fully redesign my robot before the 17th 😅

[@TheDistur]

That thing is vicious

[@drsatan3231]

From the bottom is where you least expect to be attacked Things drop from the sky to the ground and harm us all the time. Its far rarer for things to fly from the ground to the sky and harm us

[@agile52]

swinging the weapon like that is the same principle that thagomizer/maximizer use to increase weapon impact energy*

[@aid-geneering]

How well does your bot go through poly carb?

[@BrokenLinkRobotics]

Can get through 2mm reliably enough

[@BigJ_FPV]

Are you using the jumper T pro? I’m coming from the Fpv drone community and it’s really cool seeing the tech expand to other hobbies.

[@BigJ_FPV]

Also btw, I think it’s absolutely insane that you can build something that light that is that powerful. 150g is so unbelievably light, especially when your incorporating metal components. I’d imagine your battery is probly a large portion of your weight too.

[@BrokenLinkRobotics]

@BigJ_FPV I use a Taranis X-Lite, but the Jumper T Pro is very popular here too

[@samudrajs5409]

loved the whole video. shorter form content would reach more people i think

[@BearGryllzUnRated]

cheeky little makers muse angus

[@bulasturubula3660]

Pretty good moves lol

[@overmatchrobotics]

also you should experiment with cleats

[@extec101]

its like a little scorpion with a leathal sting.

[@shripperquats5872]

7:30 *assumes the position*

[@parmesanzero7678]

The filter mask and glasses are not enough to protect you from carbon fibers. If you need those things in your workspace while it is running, then those fibers are getting all over your shop and can easily be kicked up by other work later. A fingered vent chamber is the appropriate way to deal with it. Be very very careful next time you sweep.

[@Alex_Vir]

I would ask for a rename, from subdivide, to stepsister, as it seems to get stuck often.

[@LochyP]

Should've called it scorpion

[@mattrizzo9509]

I think he didn’t call because it would be way too close to Scorpios the heavyweight bot

[@luingo8376]

Mini Srikepoint

[@cheese.161]

Well it's called a hamersaw

[@WhyAreYouMakingMeSad]

Вы не боитесь, что эти щиты может, что-то пробить и полететь прям вам в яйца?) Aren't you afraid that these shields might break through something and fly straight into your balls?)

[@LankyLebowsky]

Nice phone.

[@htomerif]

Its always been a bit distasteful to me for as long as things like this have been around that you can essentially outspend your opponent and win. If you can afford titanium and carbon fiber and and the tools to machine them, and your opponent can only afford aluminum and ABS, they lose. Not that I can think of any fair way to fix that, its just a shame.

[@BrokenLinkRobotics]

@htomerif This is nonsense. The winner of a recent hobbyweight event was a plywood wedge with cheap brushed drive, against many fully CNC machined modern brushless robots.

[@htomerif]

@@BrokenLinkRobotics I didn't mean it as an attack but you decided to take it that way. I remember back in the day with battlebots there were a team of two medical doctors who spent (IIRC) 50 grand on two cnc milled, monolithic titanium chassis and made it to the finals with a boring but money powered flipper. Also, a good third of your video was dedicated to the ways your particular project failed and you threw money at it to make it better. It just happens that so did everyone else. I'd like to know the name of the robot you're taking about. I looked for the name of the one I was talking about but it was a while ago and I just couldn't. It would help if your own video didn't fully support my claim.

[@htomerif]

@@BrokenLinkRobotics This is probably before your time but in electronics and robotics classes you used to have kits and every team would get the same kit, just a bunch of ostensibly random parts and each team would have to build a thing to do a specific task. In no way am I suggesting that replace anything, but it would be an interesting addition as a category.

[@TheFwip]

​@@BrokenLinkRobotics the reason this story comes to mind is precisely because it's unusual. Sort of a "man bites dog" story. The competitions where the top N are dominated by the expensive robots are the normal case, and don't get reported on.

[@wompastompa3692]

Boo, we want Blendo.

[@welp6653]

CHARGEBLADE

[@Skinnamarink.]

Theres a reason these are the LEAST capable bots in actual bot battles.. you seem to have gotten lucky

[@BrokenLinkRobotics]

@Skinnamarink elaborate

[@lexi1337-r6s]

These "fights" suck so hard. Battlebots is already mediocre by now but these fights are a downright clown show for extreme nerds. Barely anyone even watching these fights. Also the vid creator needs to swallow his damn spit.

[@BrokenLinkRobotics]

Thanks for the view!

[@lexi1337-r6s]

@@BrokenLinkRobotics 1 view and channel blocked. Enjoy it loser