I find the idea of a robot that when flipped over can still drag itself around on the _air_ without even any kind of propeller structure quite formidable. It's like if you cut off someone's limbs but they still managed to approach you by pure b l o o d l u s t.
😂 I'm genuinely touched! Thank you so much for your support. It means a lot, mate. And yes, I also look forward to the day we meet in the arena again! 😄
A big part of the problem of robot combat involves control. What if someone used sensors, a microcontroller and the capability of omni wheels to implement an opponent-centered polar coordinates steering system? The weapon would always point at the opponent, and maneuvers to sidestep and circle around to vulnerable parts would be very simple, even almost foolproof!
@@stcredzeroThe problem you have there is finding sensors that are durable enough for the job (sensitive electronics mounted on the edges of the robot isn't great) and also detecting your opponent. I can think of a few ways to do this, but simple driver skill can accomplish a similar goal if you're talking small robots and spinners. Orbitron in Battlebots does this, but that's in a much higher weight class, where it's easier to armor the relatively small sensors. Chomp, both the original tank drive version and the massive walker, also did this to good effect to accurately fire a hammer (usually not a particularly effective weapon).
This is a really excellent build and video! I love how much you go into detail with all of your design and manufacturing, and it's super cool to see some of the variety in the Australian BW scene. The concept really looks super solid at this point, excited to see where the design will go from here.
i've always been a fan of drum spinners. the shorter ranges often means the driver has to be more aggressive, which leads to some really interesting matches. also, if the torque is high enough, it's possible to literally dance with drum spinners
Great videos and concept! I appreciate you elaborate your choses. I have been thinking about the advantage of an omni drive robot and feel that a custom controller would help a lot with utilising the orthodox axis of freedom. A space mouse controller comes to mind, allowing for full movement control with one hand, leaving the other for weapons and other auxiliary functions. Hope this helps, if not, its for the algorithm gods. Good luck with your projects!
Solid suggestion, may look into that. Currently translation uses two axis of one stick and rotation is a single axis of another. The transmitter is OpenTX, if one can get a space mouse talking to it then it shouldn't be too hard to do the translation.
All such sensible intellectual nice good solid engineering and clear logical progression of design and implementation, then the damn weapon spins up and I fully crap myself. This contrast excites me.
Unlike tank steer this drivetrain does not naturally self align, so its hard to avoid oversteer. It's the most effective motion as all wheels can drive to full power so hard to tune out as well. Working on it though
Seems like proper weight distribution is critical for these wheels. And it is a shame to waste weight budget on ballast. This suggests you should change the shape and distribution of the motors and batteries. I know - easy for me to say. However, I suspect there are some obvious tweaks available if you forego the pretty symmetry of the equilateral triangle and go isosceles. An angle coupler on your drives would buy you some flexibility. Again, talk is cheap. Congrats and good luck.
True, could try and rearrange things. Even just moving the beater back a bit would help as currently it's cantilevering over the front wheels to subtract weight from the rear. Is isosceles at the moment though.
hey I was wondering if a outwashing toothprofile (like on a drillbit) would be beneficial contributing to flipping the enemy robot sideways. I think having a robot landing on top of yours might not be beneficial? Pushing them aside while flipping.
I loved this event and Scale getting knocked out by pit was just perfect old school WWE writing to keep the two most entertaining bots from getting obliterated 😂😂 it's all about Co-opetition to keep making the match interesting
Could do, would need to machine out some of the beater to make air holes though. I have a feeling it wouldn't help much though, simply need a bigger motor!
wow lots going on in such a small package. i wonder for such a drumspinner as yours would it be possible/worth it to put the weapon motor(s) + their battery inside the drum and attach the drive shafts to the pulley? that way youd add quite some ''free'' weight to your weapon.
i think the omni drive just allows for much more aggressive tactics, which drum spinners are very good for. also i think its because horizontal spinners are a lot less easy to fit on a bot with such a shape
Basically what shovel said. A horizontal spinner needs good robot stance to react hit forces which an Omni wheel drive is not good at, would get hit away on every engagement.
Will do a video about it eventually, just mixing in the OpenTX transmitter. No smarts in robot. One resolves each input component vectors to the drive motor vectors with some constant multiplier, end up with 8 terms. Simple trigonometry and I reckon there'd be a guide somewhere for the maths.
@BrokenLinkRobotics btw, good idea on doing a video on it. A lot of these build videos on yt are very mechanical centric, which def isnt a bad thing, but i think a lot of people (like myself) would appreciate a deeper dive into the electronics/software integration as well!
Not pre hardened, and no treatment after. The ductility helped machining as well as ensuring the weapon did not crack on impacts at the cost of tooth wear. I think I'm happy with the material, I estimate I'll get 3 or 4 events out of a single beater.
Some gouges from direct hits on harder weapons but otherwise it just hits plastic or aluminium most of the time. 4140 is about as strong as low grade AR's, just not as hard.
I just wish there was a league of battle bots whether we're it's very limitations. Guns and rockets if you want them. Nothing bigger than a 22lr tough. I also wanna see better arenas, ullet prof glass, concrete and steel plating, and building and stuff in the way to block fire and damage. Like i wanna see some real combat with more sophisticated robots and drone tech. The tech is available for some scary stuff, I want t see the scary stuff. I used to watch drone fights, th dry were cool. I make robots now as a hobby and In college for it. I really wanna see what max human engineering can do other than this. This was cool in 1998 ~ 2005. It's fkn 2023 and really it's all the same stuff made with new materials. I'm not an fan. Am a fan of the parts you made though. Those are slick. Also nice tools
I find the idea of a robot that when flipped over can still drag itself around on the _air_ without even any kind of propeller structure quite formidable. It's like if you cut off someone's limbs but they still managed to approach you by pure b l o o d l u s t.
There's just something special about slow motion footage with classical music playing in the background of lipos catching on fire.
😂 I'm genuinely touched! Thank you so much for your support. It means a lot, mate.
And yes, I also look forward to the day we meet in the arena again! 😄
Subbed, going to watch your stuff too, this is so neat!
A big part of the problem of robot combat involves control. What if someone used sensors, a microcontroller and the capability of omni wheels to implement an opponent-centered polar coordinates steering system? The weapon would always point at the opponent, and maneuvers to sidestep and circle around to vulnerable parts would be very simple, even almost foolproof!
@@stcredzeroThe problem you have there is finding sensors that are durable enough for the job (sensitive electronics mounted on the edges of the robot isn't great) and also detecting your opponent. I can think of a few ways to do this, but simple driver skill can accomplish a similar goal if you're talking small robots and spinners.
Orbitron in Battlebots does this, but that's in a much higher weight class, where it's easier to armor the relatively small sensors. Chomp, both the original tank drive version and the massive walker, also did this to good effect to accurately fire a hammer (usually not a particularly effective weapon).
That fight against hurt feelings was one of the best fights I've seen
the test when revin up the motor really scared me. You have the engineering balls of steel
SO LOUD!
Seeing the connections between FRC and Battlebots is awesome! Nice job.
please do not build an omnni drive frc bot
@@LR-qi9rj someone on our team did
Nice shout out for This Old Tony. 👏
This is a really excellent build and video! I love how much you go into detail with all of your design and manufacturing, and it's super cool to see some of the variety in the Australian BW scene. The concept really looks super solid at this point, excited to see where the design will go from here.
21:15 the music combined with all the kids expressions is priceless!
i've always been a fan of drum spinners. the shorter ranges often means the driver has to be more aggressive, which leads to some really interesting matches. also, if the torque is high enough, it's possible to literally dance with drum spinners
That’s by far the coolest drumbot
Looks like a very well build robot
Also loving the videos
Sounds like an Air raid siren spinning up.
Amazing bot and a scary weapon, I wish you luck in your future journeys.
Great videos and concept! I appreciate you elaborate your choses.
I have been thinking about the advantage of an omni drive robot and feel that a custom controller would help a lot with utilising the orthodox axis of freedom. A space mouse controller comes to mind, allowing for full movement control with one hand, leaving the other for weapons and other auxiliary functions. Hope this helps, if not, its for the algorithm gods.
Good luck with your projects!
Solid suggestion, may look into that. Currently translation uses two axis of one stick and rotation is a single axis of another. The transmitter is OpenTX, if one can get a space mouse talking to it then it shouldn't be too hard to do the translation.
@@BrokenLinkRobotics You might be able to make a custom controller utilising 3-axis joystick for the movement.
I keep coming back to this every few weeks and watching again wondering how much improvement will be in V3.
All such sensible intellectual nice good solid engineering and clear logical progression of design and implementation, then the damn weapon spins up and I fully crap myself. This contrast excites me.
Very cool! Can't wait for the next vid
Great job! Great video! So happy for you!
Interesting changes from the original! Very tight compact design fitting all those components in like that.
Looks like I'm your 1000th subscriber, congratulations and good luck with the future content, great little robot : )
Cheers mate
Holy shit when the weapon spins up I get scared over the internet D:
field centricism is probably the biggest improvement u can make for this.
I think its more about perfecting control of such motion and you did pretty well. What's with the wiggling when you make a full turn ?
Unlike tank steer this drivetrain does not naturally self align, so its hard to avoid oversteer. It's the most effective motion as all wheels can drive to full power so hard to tune out as well. Working on it though
Your videos are nicely done.
maybe you could add a small wedge as a counterweight on the rear wheel to help combat horizontals
great job!! you're an amazing engineer. plz come to january norwalk
Would love to, but it's and expensive flight from Sydney to get there. Probably not anytime soon unfortunately.
Very nice!
Seems like proper weight distribution is critical for these wheels. And it is a shame to waste weight budget on ballast. This suggests you should change the shape and distribution of the motors and batteries.
I know - easy for me to say. However, I suspect there are some obvious tweaks available if you forego the pretty symmetry of the equilateral triangle and go isosceles. An angle coupler on your drives would buy you some flexibility. Again, talk is cheap. Congrats and good luck.
True, could try and rearrange things. Even just moving the beater back a bit would help as currently it's cantilevering over the front wheels to subtract weight from the rear. Is isosceles at the moment though.
hey I was wondering if a outwashing toothprofile (like on a drillbit) would be beneficial contributing to flipping the enemy robot sideways. I think having a robot landing on top of yours might not be beneficial? Pushing them aside while flipping.
I loved this event and Scale getting knocked out by pit was just perfect old school WWE writing to keep the two most entertaining bots from getting obliterated 😂😂 it's all about Co-opetition to keep making the match interesting
Great bot man, a lil unlucky there but keep on keeping on!
What about a horizontal spinner, so you can attack in any direction?
You mentioned the weapon motor overheating. Is it possible to attach (or machine) fan vanes onto the eggbeater to direct air to the motor?
Could do, would need to machine out some of the beater to make air holes though. I have a feeling it wouldn't help much though, simply need a bigger motor!
wow lots going on in such a small package. i wonder for such a drumspinner as yours would it be possible/worth it to put the weapon motor(s) + their battery inside the drum and attach the drive shafts to the pulley? that way youd add quite some ''free'' weight to your weapon.
I don't think batteries likes shocks at all
Love the vid. May I ask what weapon motor you used?
I am curious about motor and esc choices, too. Also, an entire video on those gearboxes would not hurt my feelings.
@birdyanimates9091 Sunnysky X2212 2450kv with a 40A BLheli-S ESC. 4s battery system. Same motors on drive but 980kv.
More development videos please. and where can I invest in your "get a real microphone" fund?
Why not use a horizontal spinner? It would seem to be much more omnidirectional.
i think the omni drive just allows for much more aggressive tactics, which drum spinners are very good for. also i think its because horizontal spinners are a lot less easy to fit on a bot with such a shape
Basically what shovel said. A horizontal spinner needs good robot stance to react hit forces which an Omni wheel drive is not good at, would get hit away on every engagement.
@BrokenLinkRobotics That's why the hemisphere shape is used though. Pushing back on a circle isn't easy.
How do you do the mixing for the omni-drive? Are there receivers that can do it or did you use a programmable microcontroller?
Will do a video about it eventually, just mixing in the OpenTX transmitter. No smarts in robot. One resolves each input component vectors to the drive motor vectors with some constant multiplier, end up with 8 terms. Simple trigonometry and I reckon there'd be a guide somewhere for the maths.
@@BrokenLinkRobotics Thanks, looking forward to the video
@BrokenLinkRobotics btw, good idea on doing a video on it. A lot of these build videos on yt are very mechanical centric, which def isnt a bad thing, but i think a lot of people (like myself) would appreciate a deeper dive into the electronics/software integration as well!
Great video! Question: was the steel stock for the beater pre-hardened or did you heat treat it after machining?
Not pre hardened, and no treatment after. The ductility helped machining as well as ensuring the weapon did not crack on impacts at the cost of tooth wear. I think I'm happy with the material, I estimate I'll get 3 or 4 events out of a single beater.
@@BrokenLinkRobotics Wow ok thx for the info. Positively surprised that raw 4140 can be viable.
Some gouges from direct hits on harder weapons but otherwise it just hits plastic or aluminium most of the time. 4140 is about as strong as low grade AR's, just not as hard.
Any way with that 100 extra grams in the back you could find a way to invert the robot back?
Possible, but I feel loosing strafe for better invertability is suboptimal
I recognise your friends robot from somewhere 😂
Some guy I think his name was jason
@@BrokenLinkRobotics Must be must be
My bad, johnson
Are you thinking of coming to the next MCR comp on the 22nd?
I'm running an event in Sydney on the 29th so would clash a bit, as well as being a costly plane ticket. Will come up again sometime though.
How do you design your asymmetrical flywheels and make sure they are balanced?
@SrBuhler most CAD softwares allow you to see the center off mass. I trial and error until it's balanced.
are you the guy who would have an inflatable flamingo on your shoulder at frc regionals?
Yeah that's me, surprised someone remembers
You need coolant homie. You can get knock off misters cheap af now. Ish I could afford a cnc that nice
i really hate the sound of it, its like telling me to hurry up when im relaxing, its stressing me up for some reason
is this mr beans son ??
I just wish there was a league of battle bots whether we're it's very limitations. Guns and rockets if you want them. Nothing bigger than a 22lr tough.
I also wanna see better arenas, ullet prof glass, concrete and steel plating, and building and stuff in the way to block fire and damage.
Like i wanna see some real combat with more sophisticated robots and drone tech.
The tech is available for some scary stuff, I want t see the scary stuff.
I used to watch drone fights, th dry were cool. I make robots now as a hobby and In college for it. I really wanna see what max human engineering can do other than this.
This was cool in 1998 ~ 2005. It's fkn 2023 and really it's all the same stuff made with new materials.
I'm not an fan. Am a fan of the parts you made though. Those are slick. Also nice tools
Coool! any interest in collaboration?
Depends on what, and with who
thx for the reply. This is PCBWay reaching out and we are wonder if we can do some project together
@@BrokenLinkRobotics
Feel free to reach out at the email address under my channel page
If it’s not autonomous it’s not a robot it’s a remotely controlled car. Quit lying
It would be better if you invest your skills and resorces in robotics for something usefull and constructive not something destructive and useless