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Team Just 'Cuz Robotics
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Добавлен 10 сен 2019
This channel is dedicated to sharing the knowledge needed to build combat robots and other related DIY projects.
Seth Schaffer is a Mechanical Engineer with a true passion for robotic carnage. He loves designing, machining, and building robots, and all sorts of other devices. He is also a member of the Battlebots team behind the vicious overhead spinner Bloodsport.
Seth Schaffer is a Mechanical Engineer with a true passion for robotic carnage. He loves designing, machining, and building robots, and all sorts of other devices. He is also a member of the Battlebots team behind the vicious overhead spinner Bloodsport.
Team Just Long Bird Fights at National Havoc Robot League - Group Stages Recap!
On June 1st, 2024, NHRL ran a special invite-only Teams combat robot event where teams of a 3lb, 12lb, and 30lb combat robot would battle for $50k in prize money! And the prime-time portion will be shown on ESPN The Ocho!
This video will show how I got involved and how our team did in the first half of the competition. To watch the rest tune into ESPN2 and get the highlights. Then in September head to NHRL's RUclips channel @NHRL for the entire 3+ hour stream.
Team Just Long Bird would love to thank our sponsors -
PCBWay can be thanked for machining Subtraction's chassis and a few parts for Colossal Avian. PCBWay is running a 10th anniversary sale extended through August, check them out for...
This video will show how I got involved and how our team did in the first half of the competition. To watch the rest tune into ESPN2 and get the highlights. Then in September head to NHRL's RUclips channel @NHRL for the entire 3+ hour stream.
Team Just Long Bird would love to thank our sponsors -
PCBWay can be thanked for machining Subtraction's chassis and a few parts for Colossal Avian. PCBWay is running a 10th anniversary sale extended through August, check them out for...
Просмотров: 2 060
Видео
The Heart of the Best Driving Bots: WEKA Intro and User Guide
Просмотров 1,7 тыс.21 день назад
After many months of work, the WEKA is finally available! Buy now at justcuzrobotics.com/collections/motors-gears-and-more This dual ESC is tiny, powerful, reliable, and super beginner-friendly. This is the only ESC you can buy that lets you remap which motor is controlled by which radio channel and its direction in firmware with a quick and easy calibration process. No need to reverse radio ch...
Introducing the Antweight Hubmotor: RDY MINI 5022 by Just 'Cuz Robotics
Просмотров 7 тыс.Месяц назад
The RDY MINI 5022 is the latest and greatest in weapon motor technology for small combat robots. Allowing you to slap any blade into a small bot with no effort, and spin it at over 20,000RPM, this is a durable enough motor to take huge hits (and dish them right back!) Note: As of 7/7/24 these sold out, a new batch should be here mid-September 2024. Buy now! bit.ly/RDY-5022 CAD: grabcad.com/libr...
Is SSP Still Good Enough in 2024? AniMAYHEM 3lb Robot Combat Event Recap
Просмотров 3 тыс.2 месяца назад
SSP and the Bloodsport team traveled to Toronto, in 2023 and again in 2024! Who will win? Can the USA beat Canada at their own game? Find out! Try PCBWay's CNC Machining or PCB Fab using this link for a $5 new user credit: bit.ly/PCBWayJustCuz Buy an SSP Kit: justcuzrobotics.com/pages/ssp SSP bridged fork mount 3D Print file thangs.com/designer/julian.papasian/3d-model/SSP Kit - Modified Fork M...
Will Sonic Take the Cake? Maker Battle 1lb April 2024 Event Recap!
Просмотров 6 тыс.2 месяца назад
Sonic, my 1lb Antweight combat bot, returns to the Maker Batle Hartford event for revenge! Thanks again to PCBWay for making the chassis for Subtraction V3! Check them out here: bit.ly/PCBWayJustCuz If you want to build your own Sonic robot, the CAD files are now available! justcuzrobotics.com/products/sonic-v1-cad Here is a preliminary Bill of Materials for Sonic! bit.ly/SonicBOM Just 'Cuz Rob...
Billet Metal Chassis - Good for 3lb Combat Robots? [Subtraction V2, March NHRL Event Recap]
Просмотров 9 тыс.3 месяца назад
Subtraction V2 with its new metal makeover is fighting its way through the National Havoc Robot League March 2024 tournament! Coming off a successful run at MassDestruction, will these upgrades pay off? Just 'Cuz Robotics Website: justcuzrobotics.com/ Just 'Cuz Store: justcuzrobotics.com/shop Support on Patreon! bit.ly/JCRPatreon Try PCBWay's CNC Machining or PCB Fab using this link for a $5 ne...
RDY and JCR Series Motors - Spinning Weapons Made Easy for Combat Robots
Просмотров 4 тыс.3 месяца назад
Just 'Cuz Robotics recently launched two amazing new products, the RDY-5536 and JCR-4935 weapon motors. What are they, how you should use them, and what makes them so special? All that and more in this video! Product Links Buy the RDY-5536 Battle Ready Hubmotor: bit.ly/RDY5536 Buy the JCR-4935 Weapon Motor: bit.ly/JCR4935 Buy Pariah 70A ESC for either motor: justcuzrobotics.com/products/pariah-...
My New Workshop has BIG Problems... Just 'Cuz Robotics New Shop Tour
Просмотров 1,9 тыс.4 месяца назад
Introducing the new Just 'Cuz Headquarters! Thanks again to PCBWay for sponsoring this video! Check them out here: bit.ly/PCBWayJustCuz Wire Shelf Units: amzn.to/3J6bAFY Just 'Cuz Robotics Website: justcuzrobotics.com/ Just 'Cuz Store: justcuzrobotics.com/shop Support on Patreon! bit.ly/JCRPatreon Try PCBWay's CNC Machining or PCB Fab using this link for a $5 new user credit: bit.ly/PCBWayJustC...
Subtraction V2: Let's Get Metal [3 Pound Combat Robot]
Просмотров 3,7 тыс.5 месяцев назад
Time to get metal with Subtraction V2 featuring a solid billet aluminum frame and the same amazingly powerful weapon and drive as before. Thanks again to PCBWay for making the chassis! Check them out here: bit.ly/PCBWayJustCuz Just 'Cuz Robotics Website: justcuzrobotics.com/ Just 'Cuz Store: justcuzrobotics.com/shop Support on Patreon! bit.ly/JCRPatreon Try PCBWay's CNC Machining or PCB Fab usi...
Division V4: Hubmotor Weapon & Counter Gyro Put to the Test! [NHRL January 2024 Event Recap]
Просмотров 10 тыс.5 месяцев назад
Flywheel? Check. Hubmotor weapon? Check. Experimental drive system? Check. Division V4 is all systems go, but will it live up to the hype? Find out now! Thanks again to PCBWay for making the flywheel for Division V4! Check them out here: bit.ly/PCBWayJustCuz Design Overview: ruclips.net/video/X7UjJuumfek/видео.html Hype Reel Video: ruclips.net/video/99L5ASVac6A/видео.html Just 'Cuz Robotics Web...
Deep Dive: Division V4 Design (Flywheel, Hubmotor, and more!)
Просмотров 8 тыс.6 месяцев назад
This video is a long and detailed look at the design choices I made for Division V4 - my lastest beetleweight combat robot. Division V4 features a custom hubmotor weapon system, friction-driven flywheel counter-gyro, and many other unique design elements. Thanks again to PCBWay for making the flywheel for Division V4! Check them out here: bit.ly/PCBWayJustCuz Other videos referenced: Division V...
DIVISION VERSION 4.0 HYPE REEL
Просмотров 6 тыс.6 месяцев назад
Division V4 enters the fleet at the start of 2024, with a debut at NHRL on Jan 20th. Thank you to PCBWay for machining critical components fast and precisely. Check out PCBWay for all your CNC fabrication, PCB-making, and 3D printing needs! bit.ly/PCBWayJustCuz There will be a limited number of units of the RDY-5536 motor available for beta testers pre-launch, reach out at team@justcuzrobotics....
Nothing About This Worked as Planned!
Просмотров 1,3 тыс.7 месяцев назад
Nothing About This Worked as Planned!
Can My Custom Weapon Motor Survive? [Mass Destruction 2023 Recap]
Просмотров 12 тыс.8 месяцев назад
Can My Custom Weapon Motor Survive? [Mass Destruction 2023 Recap]
I Built a Combat Robot in Under a Day (for $20) MakerBattle Event Recap
Просмотров 8 тыс.8 месяцев назад
I Built a Combat Robot in Under a Day (for $20) MakerBattle Event Recap
Combat Robotics 10,000 Miles Away? interview with Team Panic!
Просмотров 1,4 тыс.9 месяцев назад
Combat Robotics 10,000 Miles Away? interview with Team Panic!
Control Bot... with a Giant Blade??? SUBTRACTION NHRL Sept. 2023 Recap
Просмотров 11 тыс.9 месяцев назад
Control Bot... with a Giant Blade??? SUBTRACTION NHRL Sept. 2023 Recap
Is Division Still Good Enough? NHRL August 2023 Recap
Просмотров 11 тыс.10 месяцев назад
Is Division Still Good Enough? NHRL August 2023 Recap
SUBTRACTION --- 3 Pound Combat Robot Reveal
Просмотров 4,1 тыс.10 месяцев назад
SUBTRACTION 3 Pound Combat Robot Reveal
Control Bot Domination, or Destruction? NHRL August 2023 Recap (SSP)
Просмотров 5 тыс.10 месяцев назад
Control Bot Domination, or Destruction? NHRL August 2023 Recap (SSP)
Making Robot Parts FAST at Home with Lasers! Creality Falcon 22W Overview
Просмотров 1,5 тыс.10 месяцев назад
Making Robot Parts FAST at Home with Lasers! Creality Falcon 22W Overview
How To Survive Testing a Killer Robot
Просмотров 3,6 тыс.11 месяцев назад
How To Survive Testing a Killer Robot
Spinning Steel vs Flamethrower? Division at Open Sauce 2023!
Просмотров 4,3 тыс.11 месяцев назад
Spinning Steel vs Flamethrower? Division at Open Sauce 2023!
SSP: The Underdog's Journey to Face NHRL's Fierce Competitors! (National Havoc March 2023)
Просмотров 6 тыс.Год назад
SSP: The Underdog's Journey to Face NHRL's Fierce Competitors! (National Havoc March 2023)
Best Value Brushed Beetle ESC - Soldering/Usage Guide (2X 15 Amp Dual-ESC)
Просмотров 5 тыс.Год назад
Best Value Brushed Beetle ESC - Soldering/Usage Guide (2X 15 Amp Dual-ESC)
My Bambu Lab X1 Carbon Broke! Can I Fix It?
Просмотров 6 тыс.Год назад
My Bambu Lab X1 Carbon Broke! Can I Fix It?
Mastering Combat Robot Radios - Mixing, Binding, Tuning, Programming and More!
Просмотров 6 тыс.Год назад
Mastering Combat Robot Radios - Mixing, Binding, Tuning, Programming and More!
Driving Clinic: Control! The Secret to Fighting Control Bots with SSP
Просмотров 1,9 тыс.Год назад
Driving Clinic: Control! The Secret to Fighting Control Bots with SSP
Are crown gears useful in combat robotics?
I haven't seen anyone use them but that doesn't mean they cannot be used
@@JustCuzRobotics nothing for it then, I’ll just have to give it a try.
Like.
Can you please help me make my first one? My parents would never let me buy one of your sets but I really want to get one of your sets please
Not sure how to help you if they won't let you buy the best starter kit available. Feel free to have them email me with any questions they might have at team@justcuzrobotics.com
have i misunderstood this or is the only way to make bots affordable is to have a 3d printer at hand?
Its definitely not the only way but its by far the easiest. Given a really good 3d printer these days like the Bambu lab A1 Mini is like $250 it will save you a lot of money in the long run.
@JustCuzRobotics i get what you mean nut i was just going to cut soem TPU with a tablesaw or something, i think ill have something strong enough but idk
For stuff you can cut with woodworking tools, plastic cutting boards work well. They are usually HDPE or UHMW which are very impact resistant plastics.
I doubt HDPE is good for beetles though. ill see what i can do
Rotator did zero deliberate damage, thus rotator didn’t deserve all of the damage points. I feel like in this instance, aggression and control overlap each other. Rotator was on its side the whole time so he wasn’t delivering his weapon in a controlled manner. At that point the driver for rotator could just turn on his weapon and put the controller down and still get aggression points, it makes no sense. What I’m saying is rotator didn’t do enough deliberate damage to earn full damage points as per the guidelines and wasn’t in control at all, thus showing almost no aggression. I think beta clearly deserved the win but the guidelines being so weird stunted that a little, but even with the guidelines in place i think beta still deserve the win
Do you have a 12lb or 30lb robot? I don't remember seeing any videos of you with one
Its been a few years but I have built 12 and 30lb bots in the past
So apparenty there was a rain delay on a baseball game on ESPN: The Ocho a while ago so the NHRL segment was pushed back to 11:50pm :( HOWEVER - Looks like they will rebroadcast it twice, Aug 3rd 2pm, and Aug 5th 9pm.
oh thank the gods this is why they cut half the tourney from live stream! its a net positive though im shocked they only want a half hour when a whole event would definitely be worth broadcasting
Great fight with subtraction. The newest version looks amazing and functions very well.
Amazing Video. How come you didnt take division with you?
I didn't think Division would do as well and haven't had much time to work on it. Subtraction was a bit easier to get going in a short time and I knew it could at least put on a good show!
Great video, I was wondering if you've considered putting something like that cone for a future Bloodsport design?
Bloodsport is different since it uses a dead shaft which doesn't spin for the weapon. Subtraction has a live shaft so the weapon and cone both spin. If I could use a self righting pole or static element that may actually be better. Bloodsport relies on its weapon torque to self right with a fixed pole but that means it doesn't need both drive sides working like Subtraction does.
@@JustCuzRobotics Okay, that makes sense though I still think self-righting is an issue for Bloodsport
Trust me we on the team agree. It's something we are working on
I'd love to see sharpnel mine redesign videos!!
Perfect marketing strategy
I just recorded that on yt tv
Unfortunately there was a rain delay pushing it back by 51 minutes so if you recorded 11pm you would have missed it. Looks like they will rebroadcast it twice, Aug 3rd 2pm, and Aug 5th 9pm.
15:54 It was at this moment that he knew, he F***ed up.
You could put designs on the self righting cone such as a traffic cone or a wizards hat or something creative
TPU does not really stick or accept paint well but maybe I will give it a shot
There is probably no good way to put a support bearing around the upper bell, but it was the first thing to cross my ancient mind. Unfortunately bearings are heavy and require consistent alignment and support, hard to do in a top plate, especially when it’s getting hit. Just my .02 for the day.
This very first version of the 4935 motor didn't have a magnet's epoxy from factory. I haven't had any issues with magnets shattering since that change was made. The flange to shaft also makes a pretty big difference to the durability of the motor.
Chainsaw Kitty is a horrifying bot. I would have given up on the day after facing a bot like that.
Well I had a second spare robot so it wasn't too bad. All things considered the damage could have been way worse if I didn't tap out.
It’s so weird because it doesn’t look like itd be extra dangerous at first glance but it’s super planted and hits freaking hard
I'm super impressed by that wheel's dodge in the CSK fight 😆 I still can't get over how cool the new Subtraction chassis is
Honest question, how much of a difference do you think the weight bonus made in the overall competition?
That's a good question. Honestly it's hard to say. The minibot ban itself was very consequential as many teams had intended to use them for an advantage. We learned kinda last minute about the bonus making it very costly to redesign a whole robot to optimize for the new limit so I think most competitors either added more weight in armor and replaceable parts or had some slightly heavier weapons or something like that. That said some robots were designed from the start to have a mini-bot and were overweight without it like Knock Off White and Chainsaw Kitty. One really contentious one was Dutch Oven which is massive and complex and like KOW it uses both the nontraditional locomotion bonus and minibot bonus to have a 5lb multibot normally. They have a minibot with an igniter on it in case the igniter on the main bot fails and were not allowed to use that mini. I know Beeforce was also supposed to have a mini to help tee up opponents and weren't allowed to use it. Sombra also was just below 3.3lbs as they had some improvements made just for this competition though I don't what. I am sure that the last minute change affected things but it's hard to say for sure to what degree. It's just pure speculation to say the outcome of a specific fight would be different with or without a mini or additional armor.
@@JustCuzRobotics great info! thanks for the response!!!!!
sombra🔥🔥🔥
I'd like to see a design/build series for shrapnel mine.
On a bot like subtraction, is it possible to incorporate an inverted aerofoil into the weapon design such that it would generate a little extra downwards force and counteract the gyroscopic forces, or is that just too complex/wouldn't provide enough lift to make a difference? My entirely not an engineer or builder brain is thinking that you're not making use of the middle section of the weapon most of the time as a weapon itself, so as long as you don't compromise the structural integrity I'd think it could add I touch more stability without adding weight, but maybe that's just too much to balance in the realm of machining and optimization
If you want to machine an airfoil into hardened steel to find out by all means be my guest! People have speculated about this before but it's not very practical.
@@JustCuzRobotics haha fair enough, I have no capacity to do so, so I suppose the opportunity falls to some other poor soul!
@@JustCuzRoboticswhat’s stopping someone from making a 3D printed sleeve that goes over the weapon blade? (I suspect that the air resistance nullifies any actual practicality of the idea at these bots rpm’s but still a fun thought experiment
The fact that it would explode every time the blade hits anything, most likely.
1%
Banning mini bots Is smart
HYPE
VERY HYYYYYPEE
I am looking for a good resource that explains how to do a diy combat robot, explains what each component does in a kit and how to find components that are compatible (i.e. the math behind it ).
justcuzrobotics.com/blogs/jcr
The vytaflex 40 mix is no longer available on Amazon
I found another source and can update the description. theengineerguy.com/vytaflex-40/
best channel ever
I like using a little liquid flux on my solder joints when soldering to a PCB. But you have enough room on the bigger pads so add the extra solder without it turning into a huge solder blob.
I'm very impressed by this, especially the clever firmware. I'm also curious about what motor drivers it uses, as 20 amp drivers are somewhat optimistic in a tiny package like that (maybe it uses something really clever, or a driver chip that I don't know about)
It is using automotive full bridge motor drivers rated officially for 21 amps. I believe this style is used for windshield wiper motors and other actuators on 12-24V. Connor knows more details than I do tho.
I'll say something for nothing, the electronics available for hobby grade r/c is just nuts compared to what we had ~ 20 years ago. I love it.
It would be really interesting to see one of these combined with a tiny gyro, maybe even built-in to the same board. Help keep some of those squirrely bots under control.
Gyro would be something interesting to consider though I'm not sure how it would work for tank drive
I would expect it works ok with a receiver with built-in gyro.
I have tried that before but the issue is receiver gyros expect a steering servo ch2 and throttle ch1 that doesn't get modified by the gyro so in practice it just makes like the left wheel freak out when your bot rotates instead of correcting both
@@JustCuzRobotics If the WEKA is already doing mixing itself, it should be able to apply some correction, even to tank inputs. It would just take a little coding.
It's small, efficient, lighter than the last, and very useful for smaller pound robots.
What camera set up you rocking in this clip?
Insta360 go 3
I'm new to your channel and I just subscribed. I recently picked up this transmitter and receiver and I've learned more last night about how to configure it for my Heng Long tank then I ever have. The instructions from this company fly sky are terrible and I wanted to ask where on the receiver are you supposed to plug in that single yellow connector? I also think I'll try out some of your electronics projects here.
Thanks for the sub! I don't have familiarity with that particular RC vehicle so idk what yellow wire you are referring to. It's likely a signal wire for one of the receiver channels but you might need to consult the manual for that product to decide which.
@@JustCuzRobotics I think I resolved it and just wanted to say again much appreciate the video tutorial you posted here,. it really helped
hey these,could you please help me with one query? I have got a 50-65 dimension bldc motor for 30lb combat robotics.Mean time,I have got only 100A redbrick esc.Is it wise to plug it in and play or it is foolish? The weight that I am putting into the weight of weapon is around 5.5lbs.The motor that I am using is N5065-400kv 1800w 12-16v .Is it really worth to use ?
That will probably be fine if you stay in the limits of the voltage described in the product listing for the motor. Not sure if its the same one but I googled "N5065-400kv" and the first aliexpress listing just says "Recommended ESC 80A" so 100A should be okay. But a huge weapon might increase the load on the motor more than what its designed for, so I can't be certain its a great idea. If you wanna take the risk and find out you can always try!
Thank you great video, do you know how to invert controls on the fs i6(reciever-fs i6b) without diconstructing the transmiter or other complicated stuff?
They really needed to clarify what grants points in the damage category. They keep saying it's based on damage done by the primary weapon. Hydra never fired its primary weapon. So that's 5 points for huge right off the bat. I'll grant Hydra gets 3 points for control. But when Hydra had an argument with the ref about whether he was allowed to literally let go of his controller mid fight, you cannot tell me Hydra got all 3 aggression points. Huge was trying to fight the whole time, if it got even 1 aggression point it should win unless Hydra somehow got points for damage.
Satisfying.. 😊
Refs are people and people can be controlled and manipulated by other people. The Minotaur guy was screaming at the ref and insisting that he still had control of the robot.
2 years later and FOOLS has truly become a god teir bot, its fight against endgame was one to be remembered forever
You got me a first class in my engineering module in uni, thank you 🙏
when can we expect more stock?
I'll update the website with a message when I have a specific date but probably not for 2 months
Nice work! Do you have the link for the modified screen enclosure? Thanks
This is a very interesting hub motor design. I like how compact it is overall. I looked at your website at the specs and couldn't find approximate torque specs of the motor/esc. It is a simple test. You mount the motor on the edge of a table using a string wrapped around it. Use a small bucket and add weight until the motor can't lift the bucket. Measure the weight after and that is the torque. Sand makes a good measurement weight.
That test doesn't really work for sensorless brushless motors since they aren't capable of delivering any reasonable stall torque and their behavior is entirely dependant on the ESC they are connected to. I will test spinup times with weapons as a useful metric as that gives more relevant data with the specific esc I sell
instructions unclear, my pet ant just tore apart a lightweight