Alexander

AI & Robotics

[Alexander @acrosson]

GPT-6 Astra is extremely good at creating digital twins 🤯!

I fed it a few real-world episodes and it was able to create a near exact replica in Mujoco + Blender

One step closer to closing the real2sim gap

[Alexander @acrosson]

@joshhassin Thanks 🙂

[Alexander @acrosson]

GPT-6 Astra is extremely good at creating digital twins 🤯!

I fed it a few real-world episodes and it was able to create a near exact replica in Mujoco + Blender

One step closer to closing the real2sim gap

[Alexander @acrosson]

@paigeinsf @physical_int agreed ... i wonder if we'll see one coming out of China soon

[Alexander @acrosson]

@tejessrivalsan T, W, Th, F, S, S ...

Monday Robotics

[Alexander @acrosson]

@DJiafei Isn’t this true of most academic progress though? The ideas are usually incremental

[Alexander @acrosson]

@aliansarinik How did you guys land on Malibu ?

[Alexander @acrosson]

@GWitchel Its one rejection after another

[Alexander @acrosson]

@notgiannei @microagi @ElevenLabs cool demo!

How do you rank this relative to the other unsolved problems in robotics?

[Alexander @acrosson]

@sulansart @ycombinator Hi Sulan - what makes your video editor standout?

[Alexander @acrosson]

You can collect robot data without touching a robot 😮.

...using UMI (Universal Manipulation Interface).

I implemented the original version of UMI ... with a few modifications

I modified it slightly to account for:
- shorter finger gripper length
- moving the camera further forward

Using a UMI device has huge advantages for data collection:
- much faster than teleoperating a robot
- low cost and easy to use
- natural human motions
- no robot required during data collection

But it also comes with some real challenges:
- calibration and localization
- custom code to convert human demonstrations into something a robot can actually learn from

I’m going to share a few lessons from building the device, collecting UMI data, and training policies on it.

Follow along if you’re interested.

[Alexander @acrosson]

@DominiqueCAPaul I was watching their videos on YouTube three weeks back and noticed the same thing.

I assume they're using it for localization, but it could just be as a reference ID

[Alexander @acrosson]

@kotaueda999 Aren't there some papers that show that the side mirrors don't improve performance ?

[Alexander @acrosson]

@brettcalhounn What’s a crazy idea you guys have invested in recently ?

[Alexander @acrosson]

@SamuelBeek @microagi Vintage cars and robots

[Alexander @acrosson]

@earthtojake @gakonst @sendcutsend Backpack portable ✅

[Alexander @acrosson]

@PrathamJainAI @iamRezaSayar No, but maybe down the road … would need to clean up some stuff first haha

[Alexander @acrosson]

@kavirkaycee PMs don’t stand a chance 😉

[Alexander @acrosson]

@idewanck Thanks 😊

[Alexander @acrosson]

@thehumhuworks Unreal

[Alexander @acrosson]

@CamiloBAcosta I’ll cold email anybody