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It's All in the Hips
Can we learn anything from the evolution of hip kinematics in humanoid bots?
Is there a growing consensus of the optimal design?
Yes. And there is data to prove it.
First, a primer on Hip Kinematics
🧵
Can we learn anything from the evolution of hip kinematics in humanoid bots?
Is there a growing consensus of the optimal design?
Yes. And there is data to prove it.
First, a primer on Hip Kinematics
🧵
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First it was the roof, now it’s shingles
This post won’t catch on, because of the antivirals
This post won’t catch on, because of the antivirals
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Needs more cowbell
Tesla’s Optimus training regime leak.
Workers in its Palo Alto R&D facility have been holding “robot university” for many months already. Press got it wrong when they said it just started up.
Workers are wearing 24 lb suits with up to 40 cameras and grids of 3D sensors. To capture very detailed video and 3D fields of whatever the worker does.
There are multiple configurations.
They are given different tasks to do. They don’t know where the tasks come from.
Multiple squads are working on three shifts 24 hours a day. Similar efforts were seen at the Texas factory.
The data collection effort is immense.
A Tesla car only has nine cameras.
This leads to a data flywheel that is orders of magnitude more data than the car captured.
Separate teams are capturing home data, like making a sandwich, while other teams capture jobs on factory floor, like installing HVAC systems in cars.
Elon isn’t playing around.
I can’t tell you how I learned this.
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Brady, thanks for keeping our lights on
Every day trade workers risk their lives to keep the lights on.
Not anymore.
mundane gives tradespeople a second body that can take the shock or blast instead of them.
Send the robot into the danger zone; the operator stays in full control from a safe distance.
Our mission is labor force, not replace it.
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Herbert and I recorded this two days before the earnings call
How’d we do?
Pretty well it turns out
How’d we do?
Pretty well it turns out
The latest info & theories on Optimus in this vid with @herbertong and @GoingBallistic5.
The only thing would add is that V4 Optimus that will be built at the new giant factory at GigaTexas (due late 2027) will be highly vertically integrated. Meaning supply chain will be a much smaller problem even as volumes expect to be 10x what Fremont can build. youtu.be/ub14BKyNIgg?is…
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Reverse Logic
Despite the recessed left-turn stop line, FSD likely noticed oncoming traffic was turning uncomfortably close
When a chemical truck making its turn was cutting it even closer, FSD decided to reverse to give it more room
Nobody wrote a rule for this
Despite the recessed left-turn stop line, FSD likely noticed oncoming traffic was turning uncomfortably close
When a chemical truck making its turn was cutting it even closer, FSD decided to reverse to give it more room
Nobody wrote a rule for this
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By popular request
Fresh Episode: Unitree H2-X Design Changes and Red Flags
@GoingBallistic5 shares his thoughts on the Unitree H2-X, examining what’s new in the design of its knees, hips, and ankles compared with H2.
We discuss the red flags he saw, and why the way it’s being promoted could f the robotics industry. It must be called out.
Big shout-out to @micoolcho for the footage!
This is a raw, unedited conversation, straight from the recording. Enjoy!
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Do you see what I saw? Because I see a seesaw.
Superimposing two images we can find the pivot point using the perpendicular bisector of a chord theorem. The fulcrum is cleary slightly forward of the B pillar, not the rear wheels.
This implies a fulcrum near the n the junkyard setting and the visible damage, this is probably a gutted junker with the engine pulled, which would shift the center of gravity back to where the pivot point is shown.
The car rests on its front wheels with a hidden fulcrum, and the rear wheels are already off the ground. As the robot tips the front up, the rear goes down. Watch closely and you'll see it lift too far, causing the rear wheels to bounce off the ground, as you see the front drops for a moment before the robot recovers.
The robot did not lift a car. It tipped a balanced shell.
The video suggests strength the robot does not possess.
Superimposing two images we can find the pivot point using the perpendicular bisector of a chord theorem. The fulcrum is cleary slightly forward of the B pillar, not the rear wheels.
This implies a fulcrum near the n the junkyard setting and the visible damage, this is probably a gutted junker with the engine pulled, which would shift the center of gravity back to where the pivot point is shown.
The car rests on its front wheels with a hidden fulcrum, and the rear wheels are already off the ground. As the robot tips the front up, the rear goes down. Watch closely and you'll see it lift too far, causing the rear wheels to bounce off the ground, as you see the front drops for a moment before the robot recovers.
The robot did not lift a car. It tipped a balanced shell.
The video suggests strength the robot does not possess.
Unitree Introducing: H2-X Kung Fu Legend Guardian🤖
Powerful performance to serve and guard you, with a maximum endurance of approximately 8 hours.
Please use the robot safely and in a friendly manner.
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All kick, but no byte
Unitree casts the new H2-X as a robot superhero: confronting a knife-wielding intruder, lifting a car to free a dummy and pushing a child-sized doll out of traffic.
These are, of course, staged scenes, not proof of autonomous rescue skills. But quite an action-movie pitch for a humanoid.
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Not only am I impressed that the bumper fascia can hold the load of the lift without detaching
But that the robot can lift a car with only one foot on the ground!
Impressive!
(they might also want to check the front suspension. The shocks seem to be frozen in place)
But that the robot can lift a car with only one foot on the ground!
Impressive!
(they might also want to check the front suspension. The shocks seem to be frozen in place)
Unitree Introducing: H2-X Kung Fu Legend Guardian🤖
Powerful performance to serve and guard you, with a maximum endurance of approximately 8 hours.
Please use the robot safely and in a friendly manner.
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How did this go so unnoticed yesterday?
See you there.
See you there.
Humanoids Summit partners with @Tesla to bring #Optimus and complimentary Full Self-Driving demo drives to all Summit attendees.
Join us December 1–2 in Silicon Valley for the sixth #HumanoidsSummit, bringing together global leaders in #humanoidrobotics and #PhysicalAI.
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Humanoid Scott retweeted
Our Fort Lauderdale Robotics Meetup is shaping up to be one hell of a night!
Pumped to announce two awesome speakers joining us:
Alexander Petersen (@AlexPetersen91), CEO of Moby Robotics, building robots for ocean applications, from underwater mapping to surface mining.
Ballistic5) from @RoboStrategy, bringing his perspective from the front lines of humanoid robotics.
These guys are the real deal. Can't wait to get them in a room full of founders, engineers, investors, and builders.
We're at capacity, but JOIN THE WAITLIST! I'll be moving more people onto the guest list as we get closer.
South Florida robotics is heating up. Help spread the word!
Join the waitlist:
luma.com/1rqgf4k7
Pumped to announce two awesome speakers joining us:
Alexander Petersen (@AlexPetersen91), CEO of Moby Robotics, building robots for ocean applications, from underwater mapping to surface mining.
Ballistic5) from @RoboStrategy, bringing his perspective from the front lines of humanoid robotics.
These guys are the real deal. Can't wait to get them in a room full of founders, engineers, investors, and builders.
We're at capacity, but JOIN THE WAITLIST! I'll be moving more people onto the guest list as we get closer.
South Florida robotics is heating up. Help spread the word!
Join the waitlist:
luma.com/1rqgf4k7
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Called it, mostly. 👇
A couple weeks back I guessed Digit's fast charge at ~208 A and a ~1.5 kWh pack, and thought even that was aggressive.
Agility now confirms: 48 V, 240 A, Nyobolt niobium cells, ~9 min top-off for 90 min of work.
That's ~11.5 kW in, ~1.7 kWh per charge. 80–90% usable window and the pack lands around 2 kWh or roughly 18 to 26 kg.
The cost is heat, with 300 to 600 W going into the torso on every charge, that’s about a blow dryer on low, hence all the fans. Not far off. And yes, the cooling is as serious as I expected.
With 90 minutes of usable battery it consumes 1.1 kW on average.
A couple weeks back I guessed Digit's fast charge at ~208 A and a ~1.5 kWh pack, and thought even that was aggressive.
Agility now confirms: 48 V, 240 A, Nyobolt niobium cells, ~9 min top-off for 90 min of work.
That's ~11.5 kW in, ~1.7 kWh per charge. 80–90% usable window and the pack lands around 2 kWh or roughly 18 to 26 kg.
The cost is heat, with 300 to 600 W going into the torso on every charge, that’s about a blow dryer on low, hence all the fans. Not far off. And yes, the cooling is as serious as I expected.
With 90 minutes of usable battery it consumes 1.1 kW on average.
Spaculation: Might Digit V5 use LFP batteries?
V5 has an unusually high 10:1 run-to-charge ratio: 90 minutes of runtime and only 9 minutes to recharge. Few battery chemistries are built for that charge rate. LFP is one of them.
LFP cells are heavier than most chemistries, but ate of charge, support fast charging, and are less prone to thermal runaway and fire, making them a safer fit for a safety-conscious company.
Assuming a 48 V architecture (higher voltages raise safety concerns, and Agility emphasizes safe operation) and a nominal 1 kW operating load. 90 minutes of runtime then implies a 1.5 kWh pack. Recharging that pack in 9 minutes would take about 208 A.
Current at that level typically needs liquid cooling, something the robot may already have for high-end compute and sensors. Combined with LFP cells, that would also help explain the large backpack and the extra weight (285 lb).
thanks to Jordan @LimitingThe for suggesting LFP as a possibility in our exchange early this morning
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Our co-founder's earlier robots could run. Digit 5 can't. Jonathan Hurst on why, in @IEEESpectrum: spectrum.ieee.org/agility-roboti…
#Agility #MadeForWork #Digit5
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We're giving away $1,000,000 of free pizza right now
Download and order from the Hark app: hark.com/download
Type "order a free pizza" in chat. It's first-come, first-served, delivered only in the U.S. (review details below)
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