3 ms·
When comes to lower part it’s always bipedal (hard to balance) or wheels (low capabilities). Why no one makes 4-6 legs, insect like? That seems like an easier p
by para_parolu 4mo ago
When comes to lower part it’s always bipedal (hard to balance) or wheels (low capabilities).
Why no one makes 4-6 legs, insect like?
That seems like an easier problem to solve while gives much better mobility.
- ceejayoz 4mo agoEntomophobia/arachnophobia is far too common for giant bug-like robots in folks' bedrooms.
- throw310822 4mo agoA couple hundred legs would be optimal.
- 05 4mo agoThey make robot dogs, e.g. famously Boston Dynamics but many others as well. And 6 is probably overkill for price/performance increase incremental to 4. Wheels are still much more practical and you can use them as feet in hybrid designs to be able to step over obstacles but still more agile than comparable bi/quadrupeds
- solid_fuel 4mo agoGoing from 2 to 4 legs doubles the amount of actuators required and substantially increases power consumption since you must move more mass, going to 6 compounds the problem further. In a future where we have more dense power storage and better (and cheaper!) motors, you probably will see robots with more legs. But for now, the most efficient solutions are bipedal. Especially because this thing is already $8k, I imagine they have already done some substantial price optimization.
- bensyverson 4mo agoReal question: what about 3 legs? Is tripedal locomotion a viable compromise?
- levocardia 4mo agoReal answer: how many animals can you think of with three legs?
- bensyverson 4mo agoAh, so it’s impossible to make a robot unless it looks like an animal
- scotty79 4mo agoKangooroos?
- pphysch 4mo agoThere are millions or billions of quadrupeds surviving on 3 legs every day. 4 legs is evolutionarily superior to 3 but 3 gets the job done, especially if you don't have to worry about agility or repair.
- Y_Y 4mo agoThis one right here
- wat10000 4mo agoHow many animals have wheels? And yet wheels are a pretty practical choice for a lot of things.
- scotty79 4mo agoIf the robot has two legs with wheels at the ends it could combine speed and flexibility. Adding a third leg for additional stability when the robot needs it might be great. But the third leg would probably need to be between the first two and I don't think humans are mature enough to have that.
- stubish 4mo agoThere is likely no benefit over 2 legs if you need to step over things. And if you don't, wheels are just fine. Maybe stairs changes this.
- 4mo ago
- foxylad 4mo agoConversely one leg would be cheaper and lighter. I look forward to welcoming our hopping robot overlords!
- solid_fuel 4mo agoIt's been done! https://spectrum.ieee.org/jumping-robot-salto1p https://spectrum.ieee.org/jumping-robot-salto1p
- goobatrooba 4mo agoI agree on the rest but don't see why it would be heavier. If you have more feet standing at any particular moment the load would be more distributed, i.e. movement should be easier with more legs (depending on leg weight of course).
- solid_fuel 4mo agoYou're confusing (pressure on the ground / surface area) with overall weight (the sum of all pressure on the ground). Having more legs is heavier simply because now you have additional struts and motors that you didn't before, those items are linear with the number of legs, and the total weight is weight_of_leg x num_legs.
- shaewest 4mo agoI wonder how much of it is training data. We can very easily get training data of 'human tasks' because humans can wear tracking suits, and those suits track bipedal movement. Anything we train off that isn't bipedal (ie dogs) don't do human tasks, don't hold anything, so a different set of requirements.
- beau_g 4mo agoHow about a centaur? - https://www.satyress.com/ https://www.satyress.com/
- regularfry 4mo agoWheels in a different configuration solve the stairs problem. https://www.sacktrucks.co.uk/stair-climber-trucks/ https://www.sacktrucks.co.uk/stair-climber-trucks/
- jonfw 4mo agowheels are so much simpler that it seems much easier and more cost efficient to solve the "transporting a wheeled robot up the stairs problem" than it does to go fully bipedal.