It is 12 pounds I tried registering my 15 lb bot and It wouldn't allow me I had to change my bots name and set it up as 12lb to get it registered. If you show up with a 15 pound bot you will be disappointed.
It's so good that you guys are back. It's been lonely for a while when both you and This old Tony suddenly disappeared. Looking forward to August 2022 and part 2.
Man you are NOT alone. I have tubs of plastic prototypes where hours of print time for a part that's off by a mm. Print it again to only find out that another area of under by a mm. Ya tubs of plastic. Love my black anodized Alpha knife!!! Can't wait to see you guys at Maker Fair
3:10 mh… “taking a lot of little chunks out” only works because there is constant force behind an end mill. The robot on the other hand is not connected to the floor and has not that much weight compared to the force you want to exercise. So after that first nip, your bot should bounce back (so does the other); meaning all successive spins would likely just scrape air. I assume that is the reason the prominent approach of making “one big hit count” emerged as a tactic of choice. But lets see… I can be wrong.
Tip, If you need more current through the pcb you can leave portions of the trace without solder mask so you can build up solder on it for more current flow
If I understand it right, the higher Resistance of Solder... It does not carry much more current compared to Copper... So what I do is solder Copper 'Busbars' as in 1x5mm Copper strips to the PCB
@@T1g3rch3n That is correct and perfectly fine for home tinkering. But when wave soldering the board its just easier to apply solder to the traces instead of having to place custom made copper strips on the PCB.
Most of us build dense or try to. A LOT of us use magnets though. Generally we had rules to prevent sticking upside down (weighing over double) but those original known rules kinda fell off in the days before sparc. So we have been adding those rules back. The way chronos does drive with 2 wheels is to have a ptfe thin plate that is runs on (could also be uhmw). Recommend not using brake though on the brushless motors. This is a super impressive looking bot though! Very well executed overall. I personally dont love how finicky friction driven weapons can be though.
Welcome to the world of Bot Buiilding! Please come to Norwalk Havoc in Connecticut some day with your bot. I'm planning on building a brand new 12 pound bot of my own for 2022 and I would love to fight yours!
Like a Grenade, once you pull the pin, Mr. Bot is NOT your Friend... I can see the instruction manual now: (Paraphrasing the Grenade manual) Pull Pin and DRIVE!!! 😄😁😆😅😂🤣
Cool design! Grinding(cutting i guess) spinners are so rare nowadays, and im excited to see it irl. People dont use magnets (actually many builders use them) for few reasons. 1. The arena floors in many events are made out of plywood, which magnets dont help a lot. 2. The overall stress the magnets put on the bot (mostly the drivetrain) need to be addressed in design. 3. Magnets might catch on some broken parts and highcenter the bot during a fight. 4. Some events have rules against magnets. 5. Magnets make the bot dynamics wierd, and many drivers dont need them. btw halfen the voltage quarters the power, and a 500w weapon motor on 12lbs sounds underpowered.
Carbide is hard, but brittle. Great, if the forces are in the design limits, but chips or shatters over that. (Even minor forces in the wrong direction break them, and don't ask me how I know.) Also expensive. I think pieces of HSS can be better in this case. I like the basic idea, I hope it will work.
Dude, you've built the robot I put down on pen and paper when I was a teenager watching Robot Wars in the UK (an unspecific and upsetting amount of years ago)! I love it.
for years now ive wanted to try starting (or joining, if its already a thing) an all 3d printed battle bot league, where pretty much all the parts, except stuff like nuts bolts and electronics, are 3d printed. but i dont even know where to get started.
I am in the same boat as you, i make a lot of revisions and a lot of prints so i can visualize things. Though sometimes i just print out scale pictures, and tape stuff together since its a faster fail, so i can get a true sense of scale on stuff.
The reason you're having issues with your brushless drivetrain is because BL ESC can't really have smooth startup without a hall sensor. If you need to "shift" into reverse your ESC is in the wrong mode. Put it in "crawler" mode and it'll ESC brake (some ESCs have adjustable brake), and straight to reverse whenever you're under the PWM midpoint. You also seem to be using a plane/drone motor. Get something for a crawler car (with stepped rotor sections etc). Holmes hobbies makes good motors and rebrands nice ESCs
I'm thinking this bot will have the same problem saw bots have, too little effect per enemy contact. Here's hoping I'm wrong! It looks great and I can't wait to see it in action.
The problems with small bots it that air is your friend. The more space you put between the other guys weapon and your Juicy internals the less thick your armor needs to be. TPU bots work well because the have so much space. Size also leads to a more stable footprint, better cooling, and better control. The problem is that things can get bent and warped more easily
I have a difficulty imagining that you can apply enough force onto your opponent to make the inserts bite, I hope I'm wrong since it looks cool as hell!
Heh building as small as possible is basic combat robot 101. As for magnets, most bots on battlebots have them. But for smaller bots (beetleweight/antweight) they tend to use wood floors. Also some car ESCs allow you to turn off the reverse delay. Very common for RC crawlers
Dang ive played with carbide inserts on combst robots before just as a cheap source of hardened bits to stick on spinners but i missed the obvious thing of just making the whole thing like an endmill...
that's an angry little Roomba. Do the rules allow for the carbide inserts? When I read the rules for the big ones, you weren't allowed any hardened cutting/striking surfaces.
Not sure about those large bearings. Seems like a weak point, any significant flexing of the drum could blow them apart. I would think it would be lighter and more robust to support the drum with a series of smaller bearings around the periphery.
Unless they are designing paperweights, there are no engineers that build a product completely in cad, send it to manufacture, and have it *really* work the first time. These people will invariably produce a sub-standard product that will approximately meet minimum specifications, and they don't care. These people are "designers", they are NOT engineers. Engineering is, by definition, an iterative process.
Hmm, it's still showing we have some of each color on my end. I wonder if it's because you are in the UK. We are happy to ship you one if you order from our website though. We will eventually get the UK Amazon setup. But it's pretty tough at the moment.
@@PhysicsAnonymous Perhaps. Asking for local stock because people will be more buy it now button trigger happy if it's available for quick delivery and no specific website used
![BATTLEBOTS TOMBSTONE Exclusive Interview [Builder Blog Ep. 75]](http://i.ytimg.com/vi/lGT21iPlEc8/mqdefault.jpg)
Can’t wait to see this IRL next weekend 😍
Will Bales!
how was it
@@billymonday8388 so cool 😍
Your friend has a big brain. If I competed in the 15 pound category, I'd try to convince everyone else to build 12 pound Battlebots too. Good luck.
My first thought🤣
It is 12 pounds I tried registering my 15 lb bot and It wouldn't allow me I had to change my bots name and set it up as 12lb to get it registered. If you show up with a 15 pound bot you will be disappointed.
@@SteveWB It. Was. A. Joke.
@@dav1dsm1th I suck then lol I was worried people would show up with 15 pounders.
Can we see it in a fight against roomba vacuum cleaner? =))
Yes
@@PhysicsAnonymous yeaaahhh
It's so good that you guys are back. It's been lonely for a while when both you and This old Tony suddenly disappeared. Looking forward to August 2022 and part 2.
Man you are NOT alone. I have tubs of plastic prototypes where hours of print time for a part that's off by a mm. Print it again to only find out that another area of under by a mm. Ya tubs of plastic. Love my black anodized Alpha knife!!! Can't wait to see you guys at Maker Fair
3:10 mh… “taking a lot of little chunks out” only works because there is constant force behind an end mill. The robot on the other hand is not connected to the floor and has not that much weight compared to the force you want to exercise. So after that first nip, your bot should bounce back (so does the other); meaning all successive spins would likely just scrape air. I assume that is the reason the prominent approach of making “one big hit count” emerged as a tactic of choice. But lets see… I can be wrong.
Tip, If you need more current through the pcb you can leave portions of the trace without solder mask so you can build up solder on it for more current flow
And for even more, you can solder on a piece of bare copper wire.
If I understand it right, the higher Resistance of Solder...
It does not carry much more current compared to Copper...
So what I do is solder Copper 'Busbars' as in 1x5mm Copper strips to the PCB
@@T1g3rch3n You're not wrong about solder, but a good heavy solder on top of the trace is good enough for +50-100% current rating in practice.
@@bradley3549 exactly
@@T1g3rch3n That is correct and perfectly fine for home tinkering. But when wave soldering the board its just easier to apply solder to the traces instead of having to place custom made copper strips on the PCB.
9 months to end on a cliffhanger 😭
Glad to see you back nonetheless :p
Most of us build dense or try to. A LOT of us use magnets though. Generally we had rules to prevent sticking upside down (weighing over double) but those original known rules kinda fell off in the days before sparc. So we have been adding those rules back.
The way chronos does drive with 2 wheels is to have a ptfe thin plate that is runs on (could also be uhmw). Recommend not using brake though on the brushless motors.
This is a super impressive looking bot though! Very well executed overall. I personally dont love how finicky friction driven weapons can be though.
The bot is called "Doomba"? That's awesome!
HE'S ALLLLLIIIIIIIVEEEEEEEE
Yes, we need more. Please show all the things.
I am team junk yard dog and will be there so can't wait to see you guys!
That bot looks like it’s gonna be deadly, I’m also bringing a 12lb bot so I hope we get to meet each other in the bracket!
badhiya bhai
Welcome to the world of Bot Buiilding! Please come to Norwalk Havoc in Connecticut some day with your bot. I'm planning on building a brand new 12 pound bot of my own for 2022 and I would love to fight yours!
I like that you don't claim that everything worked at the first try and show your box of shame.
Greets from an engineer.
I hope they call it "The Killer Roomba".
the KILoomBA
"if you guys are interested in..." - fuck that, you had me at the thumbnail. Subbed and can't wait to see this thing in action!
I really like the pin that locks the rotating shell to the body for transport/assembly!
Like a Grenade, once you pull the pin, Mr. Bot is NOT your Friend...
I can see the instruction manual now: (Paraphrasing the Grenade manual) Pull Pin and DRIVE!!!
😄😁😆😅😂🤣
Also a requirement for safety during load in/load out of the robots
Welcome back ….. definitely worth the wait 👍😎👍
Can’t wait to see part two of this video in 2 years time…🤪
You should name it “Chatter” after the tool chatter you can get when machining
Cool design! Grinding(cutting i guess) spinners are so rare nowadays, and im excited to see it irl.
People dont use magnets (actually many builders use them) for few reasons. 1. The arena floors in many events are made out of plywood, which magnets dont help a lot. 2. The overall stress the magnets put on the bot (mostly the drivetrain) need to be addressed in design. 3. Magnets might catch on some broken parts and highcenter the bot during a fight. 4. Some events have rules against magnets. 5. Magnets make the bot dynamics wierd, and many drivers dont need them.
btw halfen the voltage quarters the power, and a 500w weapon motor on 12lbs sounds underpowered.
A 1HP endmill on wheels. Very cool. I wonder if you could program it to "machine" something giant in the real world. Maybe foam or snow or ?
This old Tony and PA posting again?
Let the rumors begin?
Carbide is hard, but brittle. Great, if the forces are in the design limits, but chips or shatters over that. (Even minor forces in the wrong direction break them, and don't ask me how I know.) Also expensive. I think pieces of HSS can be better in this case. I like the basic idea, I hope it will work.
I think you'll appreciate the next video ;)
Oh yeah! You got it really nice and compact.
Looking forward to the next part of this in 2024
Man there goes my pool entry. I had Feb '22 for your next one. ;-) Glad to see you guys back.
That's a smart design.
Dude, you've built the robot I put down on pen and paper when I was a teenager watching Robot Wars in the UK (an unspecific and upsetting amount of years ago)! I love it.
for years now ive wanted to try starting (or joining, if its already a thing) an all 3d printed battle bot league, where pretty much all the parts, except stuff like nuts bolts and electronics, are 3d printed. but i dont even know where to get started.
With the magnets, if the scale has ferrous bits internally it will weigh wrong
I am in the same boat as you, i make a lot of revisions and a lot of prints so i can visualize things. Though sometimes i just print out scale pictures, and tape stuff together since its a faster fail, so i can get a true sense of scale on stuff.
The reason you're having issues with your brushless drivetrain is because BL ESC can't really have smooth startup without a hall sensor. If you need to "shift" into reverse your ESC is in the wrong mode. Put it in "crawler" mode and it'll ESC brake (some ESCs have adjustable brake), and straight to reverse whenever you're under the PWM midpoint. You also seem to be using a plane/drone motor. Get something for a crawler car (with stepped rotor sections etc). Holmes hobbies makes good motors and rebrands nice ESCs
It's the Roomba of doom, the Doomba if you wish.
Amazing how fast you guys figured out the actual name of it lol: been registered with the organizers as The Doomba for months :)
@@wileecoyoti Here I was just making a stupid joke, and I hit the nail on the head. You know what they say about great minds.
I'm thinking this bot will have the same problem saw bots have, too little effect per enemy contact.
Here's hoping I'm wrong! It looks great and I can't wait to see it in action.
Now gift it to someone and tell them its a roomba, their reaction will be priceless
The problems with small bots it that air is your friend. The more space you put between the other guys weapon and your Juicy internals the less thick your armor needs to be. TPU bots work well because the have so much space. Size also leads to a more stable footprint, better cooling, and better control. The problem is that things can get bent and warped more easily
Haven't even watched it yet but already hyped as fuck.
Thought there was something missing in my life, and it was definitely this channel. I feel whole again.
I have a difficulty imagining that you can apply enough force onto your opponent to make the inserts bite, I hope I'm wrong since it looks cool as hell!
8:49 thank you
I've always thought both of these measurements were dumb
they're only half the measurement you need
Day just got so much better. Haven't even watched yet already know it's good.
Did hell just freeze over? Thought you guys blasted yourselves into space.
Heh building as small as possible is basic combat robot 101. As for magnets, most bots on battlebots have them. But for smaller bots (beetleweight/antweight) they tend to use wood floors. Also some car ESCs allow you to turn off the reverse delay. Very common for RC crawlers
Oh hell yeah! So on board with this!
Awesome to see you back but… no unicorn?!
Lol thats a portable milling machine, i hope it doesn't chatter when its finished
So happy to see y’all are alive!
Yes, more please
Awesome!
How are you ensuring layer adhesion on your power board? Rigid circuit boards aren't really suited to impact or vibration rich environments.
what
about
the
lathe
Very interesting design. I'm keen to see how it performs and competes.
interesting 💗💗💗
What I never saw was an electronic warfare bot. Like jamming the competition signal so it can attack a helpless target.
So like, there's at least a decent chance you finish *this* project, right?
you should call it the chip breaker!
No death metal unicorn?
you made a killer roomba
Wow, your channel has come a LONG way from the early days!
Eagerly awaiting the test footage of this bot!
Круууть!
Завидую вам!
Awesomeeeee.
those carbide bits are designed for very specific loading characteristics. I think they are going to chip/shatter very quickly.
Woooo new PA vid!!
WHERE IS MY UNICORN!?!
Oh and yeah, welcome back! 😁
Looks like you put some thought into this design. Best of luck!
ye ol' danger roomba
Love the insert idea!
When he says "See you later" he redefines the word later :D
Weird roomba you are making there
Dang ive played with carbide inserts on combst robots before just as a cheap source of hardened bits to stick on spinners but i missed the obvious thing of just making the whole thing like an endmill...
Impressive thought on weapon design
Looks awesome! Nice job.
Who else wants to see a 250lbs version of that?
A Better esc (VESC) will allow the small motors to start more easily and with full torque.
So good. More please.
that's an angry little Roomba. Do the rules allow for the carbide inserts? When I read the rules for the big ones, you weren't allowed any hardened cutting/striking surfaces.
Magnets are pretty competitive events which run a steel floor, its just that a fair few US events run wooden floors
Holy Shit! your Back!! YAAYYYYYYYYY!
Might need some guards for the wheels so the wires done touch and get burnt up. But I'm sure your going to do something.
So, what's the plan for a self-righting mechanism?
So you just made an angry roomba? 😬
Dose the Battlebot use Linux CnC?
you should use electromagnets so you aren't always trying to stick to random debris on the field
Angry roomba xD
The box of shame, an Amazon box 😂
Not sure about those large bearings. Seems like a weak point, any significant flexing of the drum could blow them apart. I would think it would be lighter and more robust to support the drum with a series of smaller bearings around the periphery.
aren't the carbide inserts gonna chip?
Long time no see 👀
Seems like you guys experience time dilation
Look's like a target for practice.
Would make the body out of stainless steel
Yesssss!!!!!
Doesn't RR have a wooden floor?
Can you make those Electro Magnets so you stick to the floor only when you pull a trigger on your remote?
nine months? you coulda fooled me
Where did he find a bearing that large?
always wheels on center-line..... :P
Unless they are designing paperweights, there are no engineers that build a product completely in cad, send it to manufacture, and have it *really* work the first time.
These people will invariably produce a sub-standard product that will approximately meet minimum specifications, and they don't care. These people are "designers", they are NOT engineers.
Engineering is, by definition, an iterative process.
You're alive!!!!!!!!!
It's out of stock on amazon already lol.
Can you also get a shipment for amazon UK?
Hmm, it's still showing we have some of each color on my end. I wonder if it's because you are in the UK. We are happy to ship you one if you order from our website though. We will eventually get the UK Amazon setup. But it's pretty tough at the moment.
@@PhysicsAnonymous Perhaps.
Asking for local stock because people will be more buy it now button trigger happy if it's available for quick delivery and no specific website used