cbames89

7 ms·

31.
by cbames89 7y ago
"Surviving SF: A beginner's tutorial" seems like a normal HN post title.
32.
by cbames89 7y ago
Dave's a great guy for doing this. I like to peruse his notes just to see what he thought was important.
33.
by cbames89 7y ago
Sweet, thanks for sharing your experience!
34.
by cbames89 7y ago
UR website[0] seems to suggest +- 10N (a kilo resting on your neck) with their stock implementation. I imagine you're going to want something better than that. What Force/Torque sensor do you use? Some of them are temperature sens
35.
by cbames89 7y ago
Great improvement since the last video! Are you just using Jacobian transpose for force control on the neck? I ask because it seems a bit stiff, the red marks on the neck of the test subject suggested to me that maybe there's a lot of
36.
by cbames89 7y ago
I completely agree, the alphago paper is more like the working notes of a team that just accomplished something. The alphazero paper is a more careful analysis about the theoretical underpinnings and paints a clearer picture.
37.
by cbames89 7y ago
In North Carolina, it's very easy to get proper vegetables.
38.
by cbames89 7y ago
It could provide the motive to begin a(an even more?) massive automation push within the U.S. That could have long-term negative consequences for China.
39.
by cbames89 7y ago
One of the labs that I visit frequently has Beams for people to use. They've been on a multi-year kick to make the lab "Beam-able." That means, no extension cords, no floor outlets, no ramps, or edges on the floor of any kind
40.
by cbames89 7y ago
This is pretty similar to my experience, but I also have two kids both born during graduate school. Their addition to our family will delay my graduation a bit, but they're worth it :)
41.
by cbames89 7y ago
Byron Boot's lab at Georgia Tech does a lot of interesting work with larger-scale R/C vehicles. That being said, by adding more degrees of freedom you're making the configuration space of the robot higher. In many cases, high
42.
by cbames89 7y ago
Sorry to be a bit pedantic, but reality exists independent of belief or acceptance. However, a belief in whether or not a person can change that reality at some future point, I think is a more accurate description of the quality you're
43.
by cbames89 7y ago
Maybe at the highest end, they're 3000, but a quick search of apartments.com shows there are still plenty of nice apartments to be had in the 1000-1500 range.
44.
by cbames89 7y ago
I think a more nuanced way of defining iii is that the intelligence an agent is capable of is limited by the extent to which it is capable of perceiving and interacting with an environment. At one level this has to be true, if it weren&#x27
45.
by cbames89 7y ago
I've actually built a Dexter with the guys from HD. One of the beauties of that arm is its ability to force sensing inherently, at least the version I have. I doubt you'd need additional force sensing capabilities on top of what y
46.
by cbames89 7y ago
Interesting project! I've thought about this one before, mostly due to Jimmy Neutron. What arm are you using? Also what depth sensor? A few suggestions: It would appear that you're taking a pretty common approach to robot manipula
47.
by cbames89 8y ago
I learned a similar lesson from working on robots. At first I attempted to devise methods for Robonaut 2 to do things the way I do because it was designed to be like me. It was missing little things that made my approaches unfeasible, and i
48.
by cbames89 8y ago
This is a (perhaps short-term) failure of first principles reasoning. Elon's known to favor thinking about things from first principles, and there's no theoretical reason that vision can't work. However, technical limitations
49.
by cbames89 8y ago
A clock, a piece of paper and a pen.
50.
by cbames89 8y ago
I think an important aspect in this post is the idea of a maximum amount of time for a particular section. I've had some success using this to combat perfectionist tendencies. In addition, im currently going through grad school with 2
51.
by cbames89 8y ago
One of the founders wrote a FPGA language. I suspect it's the tool the team knows the best, but may not be the most price optimized. I think that's fine for now, especially since it's still one of the most affordable arms ava
52.
by cbames89 8y ago
Ya recalibration is definitely a necessary aspect of this approach if the optical reading changes. For example if IR light levels change.
53.
by cbames89 8y ago
Like optical flow in that features are used, not like optical flow in that there's one standard by which all measurements can be compared to.
54.
by cbames89 8y ago
The FPGA enables higher sampling rates, which allows for the finer resolution when paired with a lookup table which contains systematic error.
55.
by cbames89 8y ago
There's just one encoder per joint. The encoder disk is 3D printed and the cruft from the print is used to refine the encoder ticks. Instead of fighting noise they save a map of all the systematic noise and then can use a lookup table
56.
by cbames89 8y ago
I believe they have a version called electron which is doing smd placement.
57.
by cbames89 8y ago
I have a Dexter. They have harmonic drives from China which were deemed out of spec for normal usecases but are fine for the 3kg realm. Their latest version is running a custom cycloidal gear system.
58.
by cbames89 8y ago
Sure, my statement was based on rumors that I heard about Rethink taking a look at Robonaut with the covers off and the actuators looking eerily similar. But yes, Series elastic actuators weren't invented at NASA.
59.
by cbames89 8y ago
As a data point. The original Valkyrie cost ~12.5 million. Thats hardware and software dev over about 3 years. I'm not positive about the subsequent copies, but I've heard they're in million to 2 million.
60.
by cbames89 8y ago
You can get a spot mini for ~30k according to Raibert. I think limiting our analysis to one particular form of robot is probably not a good idea. As we're still trying to figure out which form is the best for whatever that "killer

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