Search found 76 matches

by carter42
Sun Aug 30, 2026 11:59 am
Forum: AI, Control Software & Locomotion
Topic: How do you keep a whole-body controller stable when adding a new tool/payload?
Replies: 30
Views: 275

Re: How do you keep a whole-body controller stable when adding a new tool/payload?

<t>@michaelroberts Not to derail, but this reminds me of something adjacent:

Sim-to-real transfer still commonly breaks on contact dynamics - friction, restitution, and deformable/compliant surfaces are the hardest things to model accurately in simulation, so policies trained purely in sim often ...
by carter42
Sun Aug 30, 2026 11:59 am
Forum: Actuators, Motors & Drivetrains
Topic: Anyone compared noise levels across actuator types in a real room?
Replies: 46
Views: 349

Re: Anyone compared noise levels across actuator types in a real room?

<t>@vyoung Not sure I fully agree here.

Boston Dynamics' commercial electric Atlas switched fully from hydraulic to QDD-style electric actuation, ending up quieter and lighter with comparable or better dynamic performance than the old hydraulic platform. Cycloidal drives are a less common but ...
by carter42
Sun Aug 30, 2026 11:59 am
Forum: Sensors & Perception Systems
Topic: Anyone tracking sensor cost trends the way we track actuator cost trends?
Replies: 54
Views: 354

Re: Anyone tracking sensor cost trends the way we track actuator cost trends?

Short answer: Vibration is one of the most underrated sources of noisy IMU and tactile readings - mounting matters as much as sensor quality, and a poorly isolated mount can add more noise than the sensor's own datasheet specs would suggest.
by carter42
Sun Aug 30, 2026 11:59 am
Forum: Specific Robots & Companies
Topic: How seriously should we take PAL Robotics given their much longer track record?
Replies: 45
Views: 655

Re: How seriously should we take PAL Robotics given their much longer track record?

@edward.nelson Here's what I know on this: AgiBot reportedly sold around 5,168 units, putting it roughly in the same commercial volume range as Unitree among Chinese manufacturers, and worth watching alongside the more internationally recognized Chinese players.
by carter42
Sat Aug 22, 2026 5:09 pm
Forum: Sensors & Perception Systems
Topic: Joint torque estimation from motor current vs dedicated sensors - accuracy tradeoffs
Replies: 27
Views: 374

Re: Joint torque estimation from motor current vs dedicated sensors - accuracy tradeoffs

<t>@ethan_fisc Tangent, but worth mentioning:

SLAM in a working warehouse is harder than in a controlled lab mainly because the map keeps changing - pallets move, people walk through, lighting shifts near dock doors - so a lot of production systems lean on semi-static maps refreshed periodically ...
by carter42
Thu Aug 13, 2026 4:39 pm
Forum: DIY & Hobbyist Builds
Topic: My actuator overheated and melted part of the 3D printed mount - lessons learned
Replies: 30
Views: 325

My actuator overheated and melted part of the 3D printed mount - lessons learned

<t>Genuinely split on this one, wanted outside opinions.

The Berkeley Humanoid Lite stands about 1 meter tall and weighs roughly 16 kg, which is a genuinely reasonable target size for a first serious hobbyist build - big enough to be a real bipedal platform, small enough to not need industrial ...
by carter42
Mon Aug 10, 2026 8:06 am
Forum: Industry News, Funding & Market Trends
Topic: Anyone following how public humanoid-adjacent stocks have actually performed this year?
Replies: 32
Views: 302

Re: Anyone following how public humanoid-adjacent stocks have actually performed this year?

<t>Speaking from personal experience here,

Unit economics for an early fleet deployment have to include maintenance, downtime, and technician support costs, not just the sticker price of the robot - a lower unit price (like Unitree's roughly $16k G1) doesn't automatically mean a lower total cost ...
by carter42
Sat Jul 18, 2026 11:00 pm
Forum: AI, Control Software & Locomotion
Topic: What's the state of language-conditioned task planning for humanoids right now?
Replies: 16
Views: 250

Re: What's the state of language-conditioned task planning for humanoids right now?

<t>@garcia51 This matches what I've seen too.

Domain randomization - varying friction, mass, sensor noise, and even visual textures during training - is one of the more reliable tricks for improving sim-to-real transfer, but overdoing it can make training slower to converge and produce overly ...
by carter42
Wed Jul 15, 2026 10:53 pm
Forum: Careers, Research & Academia
Topic: What's underrated as a skill that actually gets you hired in this field?
Replies: 29
Views: 366

Re: What's underrated as a skill that actually gets you hired in this field?

<t>@jwang One nitpick -

The common academic path into this field is a master's or conversion course in robotics or machine learning, followed by an internship or research role at a known lab or company - a PhD is common but increasingly not strictly required for industry roles, especially on the ...
by carter42
Mon Jul 06, 2026 6:27 am
Forum: Specific Robots & Companies
Topic: What's the current best source for verified (not PR) deployment numbers?
Replies: 18
Views: 240

Re: What's the current best source for verified (not PR) deployment numbers?

<t>@jlefebvre Not to derail, but this reminds me of something adjacent:

Unitree's G1 humanoid starts at roughly $16,000, a price point well below full-size US-built humanoid platforms, and the company reportedly sold around 5,500 units - a meaningful data point in how aggressively Chinese ...