Thane Hunt

@elonmusk @TheHumanoidHub @GoingBallistic5 If ‘patents are for losers’, then why are your people patenting dead-end concepts of all things? And there is nothing fundamentally wrong with the flexure concept (nor is it novel), but maybe execution missed the mark.

@TheHumanoidHub @GoingBallistic5 We already changed the design. This one didn’t actually work.

Scott Walter (@GoingBallistic5) explains Tesla Optimus' innovative rolling contact finger joints from the newly published patents.

We are fitting to the shadow of a completed untracked control loop.

For dexterous robots, human visual trajectory data is being miscast as an ideal policy target. Humans can fold clothes with eyes shut. We moved to the right because we felt something slip. Most robots have no idea about the rigid and soft body interactions between their hands the world.

@PxSammm @ErenChenAI It’s absolutely a capability issue. Like we all have the original schematics for the Saturn V rocket, but where are all the rockets? Knowledge does not equal capability. I can’t argue this with you. I’m sorry.

@PxSammm @ErenChenAI Congrats!

The race ended before it got even started for this robot :(

@graftoverflow I do!

Who knows about patents?

You’re not thinking about end-to/end supply chain. Isn’t India still importing 70% of the chemicals for pharmaceuticals from China? This powers a global generics business. Also, almost no silicon fab in India, and the 28 nm tech there is insufficient for most modern applications. Nobody is independent, though many aspire to be. You can’t consider tech and economy separately.

@thanehunt @ErenChenAI Thanks. Most of Asia is in the same bracket. Which means aside from US, Europe, Canada who basically are fully-dependent on china for survival, rest of world (70% of humans on earth) uses chinese imports for cost-efficiency rather than as a fatal dependency.

@PxSammm @ErenChenAI I don’t follow, what does this have to do with Chinese manufacturing?

@thanehunt @ErenChenAI 😂You do realize that there are humans living OUTSIDE of the USA, right? You need to get out more. Also, it's not your ignorance - it's the confidence in your own ignorance that's laughable.

@PxSammm @ErenChenAI Almost everything is made in or at least touches Chinese supply chain. You don’t have to agree with me (I don’t care) but I would encourage you to do your own reading and see what kind of answers you might find.

@thanehunt @ErenChenAI 😂The first part is quite literally not true. The second part is also not true, but it's less laughable. If it's their robot that they designed, they could design it in ANY WAY they choose. But sadly, we all know it's not their design - more likely a Boston Dynamics' cheap copy.

New models every 24 hours! Things are about to get hot

@ErenChenAI This video is a fantastic demo on the need for a multimodal controller. A single line of code could cut power to the motors if the body passes an angle steeper than, say, 45°. Naïve, yes, but would’ve worked fine for this race and would not have cooked a $30K robot.

@ErenChenAI The amount of damage it took seems disproportionate to the impact.

@Filmantopia @NayanUnfiltered @ErenChenAI @grok Yeah, now it’s more about logical flow/object permanence. Visually, a lot of it looks essentially perfect to me.

@thanehunt @NayanUnfiltered @ErenChenAI @grok I hate that I can’t tell. I am a videographer and have begun augmenting my work with AI, including fully AI generated video, and it’s insane how good it is.

You’re actually better at determining this than Grok. It’s the little things, the bandanna falling and ending up exactly where you would expect. The circular arm piece rolling to the left, passing out out of the screen, and when the camera pulls out, it is still there. Lots of little details. My buggy human AI detector says this is 90% likely to be real. I only take away 10% because I can’t keep up with the rate of diffusion progress.

@ErenChenAI @grok check the authenticity of this video. Is this really from the world's first human vs. humanoid robot half-marathons, featuring 21km races in E-Town.

@TheHatman9 @ErenChenAI Yes, this was an example of lazy programming. if(pose.current = ‘horizontal’){stop;} This should override all models, loops, and other behavior. An internal e-stop, a reflexive analog for self preservation. :)

@thanehunt @ErenChenAI Yeah that's what happens when your PID loop doesn't take in to account failure modes, and continues to try to overcorrect. That robot was thinking if I only put more and more and more force into my kicks I will straighten back up.

@PxSammm @ErenChenAI Everything you’re wearing, probably came from China, most of the parts of your car, certainly all the fasteners that hold your house together. It’s not because they’re Chinese, it’s because that’s just a really fragile design I guess.

@thanehunt @ErenChenAI You have not taken into account the build quality of chinese products

@naijirou @ErenChenAI I don’t think so

@thanehunt @ErenChenAI Probably because the video is AI generated.

@plastic_gear You’re fast! Awesome!

🫶【Mechanism Study of the Tesla Optimus Hand Patent】🫶 I built a quick functional mock-up yesterday based on the newly published Tesla Optimus hand patent filings. It looks rough because I wanted to validate the mechanism as quickly as possible, but it is fully functional. What impressed me most is that the interesting part is not just the unusual joint geometry itself. My reading is that the real elegance of this design is in reducing active cable count by using an elastic return / bias element instead of another extensor-side cable, while routing the distal control cable through the proximal joints carefully enough that distal motion remains controllable with reduced unwanted coupling. The rolling-contact style joint also works surprisingly well in practice. What I respect most about these filings is that they do not read like “look at this clever mechanism.” They read like a serious attempt to solve the real problems of a tendon-driven humanoid hand: cable count, routing through multiple joints, manufacturability, and assembly. There is a very strong sense here that the design was pushed not only toward motion, but toward production. This mock-up is simplified for functional reproduction. My prototype uses a single-resin flexure, not the multilayer composite flexible member described in the patent filings, so the extension-side hysteresis is probably not representative of the intended behavior. I also did not fully reproduce the cable-support / control-channel geometry shown in the filings, so some residual inter-joint crosstalk remains in this mock-up. WO2026/080687 A1 WO2026/080690 A1 WO2026/080691 A1 WO2026/080693 A1 WO2026/080701 A1

@niccruzpatane *will not make it through.

@niccruzpatane Countless hands have been architected in this way since the 70’s, this is a defensive filing. Most likely most of their claims not make. Awesome schematic though. What they have here is a wonderful execution on a proven concept.

Elon Musk has repeatedly highlighted the hand (and forearm) as one of the toughest engineering challenges for Tesla’s Optimus Robot. A new Patent (for presumably Optimus 3) shows Tesla is using human anatomy to recreate a tendon-driven robotic hand and forearm assembly that closely mimics a human system. Basically, Tesla is replacing human muscles with actuators and tendons with cables to replicate human dexterity. The Tesla Engineering team is on another level. Optimus Gen 3 reveal is going to be incredible.