Han Zhang

Collecting manipulation data with DexUMI. Let’s scale up together! 📈 Big shoutout to my amazing project co-lead Mengda @mengdaxu__ , who brought full stack experience, strong system design skills, and unique insight to make this possible! 🙌

🤖Low-data post-training can teach a VLA policy a new robot skill. But it also makes it too attached to the training demos. We call this lock-in🔒: the policy can execute the post-training task, yet fails to respond to seemingly obvious prompt changes. DeLock preserves steerability using only the policy’s own pretrained knowledge. No extra supervision needed!🚀🚀🚀 #Robotics #AI #EmbodiedAI #VLA

Can we learn whole-body mobile manipulation directly from human demonstrations? Introducing Whole-Body Mobile Manipulation Interface (HoMMI) Egocentric + UMI, 0 teleop -> bimanual & whole-body manipulation, long-horizon navigation, active perception hommi-robot.github.io

Introducing ACT-1: The frontier robot AI behind Memo. ACT-1 enables Memo to perform: 🎭 ⏰ Lengthy tasks like cleaning up after your dinner 🦾 Dexterous tasks such as folding socks ☕ Daily delights like making an espresso How does it work? 🧵

I really love the elegant hardware design, especially the glove and gripper. Sunday is making every Sunday brighter. Huge congrats to Cheng, Tony and the team!

mm level precision beyond actuator limits, so much torque that you need to manage thermals. Owning the whole stack from HW to AI is the only way 🦾

Toddy enjoyed his time in Seoul — his first big trip away from home!😆 He rolled around on wheels, showed off his pull-up skills (Cr: @li_yitang), spoke in the spotlight as a 1.5-year-old, and presented at the poster session.

How do we unlock the full dexterity of robot hands with data, even beyond what teleoperation can achieve? DEXOP captures natural human manipulation with full-hand tactile & proprio sensing, plus direct force feedback to users, without needing a robot👉dex-op.github.io

@kikori1906 Yes! Glad to hear another YL on the air 👭

@DoubleHan07 Here is a message for you from Nina. ^^)

SO-50 QSO with JK4DHT,7J3AUS/8(also DL2GRC),BI1NWO Tnx! (HRD: JK6DXD,JH7JHX,JL1MZP,JI8VAY) #amsat #hamradio #xxksatlog

@kikori1906 Wow made my night! Thank you Nina and Taka!😊

@DoubleHan07 You're in Nina 7J3AUS's log. Congratulations, Helen! ^^)/

@ja7kpi We (BY1QH) are on 2m MS now. We will adjust our transceiver settings for your setup.

ペルセウス座流星群MS、RN0JJ(約1300km)までは届いたようです。依然として Even/1stでCQを出し続けていますが、交信は未だできていません。現在、アンテナは北京方面(西)に向けています。

Collecting dexterous humanoid robot data is difficult to scale. That's why @mengdaxu__ and @DoubleHan07 built DexUMI: a tool for demonstrating how to control a dexterous robot hand, which allows you to quickly collect task data. Co-hosted by @micoolcho and @chris_j_paxton

Human hands are incredibly capable manipulators, but it's hard to get high-quality robot data for learning policies. DexUMI provides a solution: a tool by which you can naturally "puppet" a dexterous hand with your own, in order to learn skills that directly transfer to a robot. Learn more ->

Full episode dropping soon! Geeking out with @mengdaxu__ @DoubleHan07 on DexUMI: Using Human Hand as the Universal Manipulation Interface for Dexterous Manipulation dex-umi.github.io Co-hosted by @micoolcho @chris_j_paxton

@kikori1906 See you at ON80 then…😭

@DoubleHan07 AO-123 and SO-124 have no FP here, and 00z is at work. I give up.

Still 1 to go untill Sat-VUCC 1200 here.....💪

@kikori1906 Sorry to hear that. I’ll be also on air at the following time (all at OL49): Aug.07 13:56z AO-123 15:13z SO-124 Aug.08 00:43z ISS Would these be available then?

@DoubleHan07 Thank you for the information. But no FP here. ^^;

@kikori1906 I’m currently at the intersection of both grids. Try to catch me on the air.

@kikori1906 09:42z ISS will be my last operation at OL48 & OL49

@ba1pk Still can not find the proper setting for RS-44. During my operation the downlink signal is very weak. Sorry for that…

7.22 BI1NWO OM32, OM33 06:27z ISS 08:02z ISS 09:31z RS-44 145.955 SSB 10:00z PO-101 There is a risk that RS-44 cannot be sent for QSO (the equipment is still under debugging. I'm trying my best).