generuso

11 ms·

91.
by generuso 2y ago
Boston Dynamics is notoriously secretive. But unlike with hydraulics, where Boston Dynamics have developed their own valves and pumps and organically shaped 3D printed in titanium manifolds, there is only so much that one can do differently
92.
by generuso 2y ago
You are absolutely right. And this is reflected in the choice of robots deployed in warehouses. For example, Amazon uses hundreds of thousands of simple wheeled floor-jack like robots to move the shelves around [1], and they started doing t
93.
by generuso 2y ago
Here is a quote from Ben Katz [1], who wrote a dissertation on building the mini-Cheetah at MIT, before joining Boston Dynamics: "The hydraulic legged robots from Boston Dynamics, starting with Big Dog, have set the standard for the pe
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by generuso 2y ago
Atlas was built for exceptional performance. The way it works, the energy is stored in a pressure accumulator (where gas is compressed) and when valves open, the gas pushes hydraulic fluid at several hundred bars through the lines, and rela
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by generuso 2y ago
I am sure they will save a few robots as museum pieces. As it happened with Rodney Brooks' Cog robot [1]. The sad part about these endings is that although the actual artifacts may be preserved, the know-how which went into their creat
96.
by generuso 2y ago
For a long time, Boston Dynamics was more or less a research laboratory, but unlike a university laboratory, they also had lots of professional engineers. They were content with perfecting their robots purely for internal research, and very
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by generuso 2y ago
Overall, designing physical things, building working prototypes of novel stuff, and designing factories for large scale production are each an extremely vast domain, at least as large as the whole of computer science and software engineerin
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by generuso 3y ago
I assume they use garden variety MOSFETs like 2N7002, which cost a few pennies when bought in bulk. The gate capacitance is 20 pF. One logic gate output is typically driving several inputs, so the typical load is several-fold of this capaci
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by generuso 3y ago
With the modern short wavelength UVC LEDs, this is considered a promising new technique [1]. With longer wavelength UV, which is less absorbed by the cells, the light would penetrate deeper into the tissue and cause much more DNA damage. St
100.
by generuso 3y ago
It is important to emphasize that the authors are talking specifically about CNC machines. In this category, Russia was in love with the European CNC vendors. And the vendors had an awesome market in Russia, because Russian managers eagerly
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by generuso 4y ago
This was much more informative than companies' own videos. They should have invited somebody like that to make a video about them long time ago, before the narrative got hijacked by the "skeptics" with a very vague understand
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by generuso 5y ago
It is a common and understandable error to assume that the linear velocity should remain constant. If the object goes in a circle, the radial force always acts perpendicular to the direction of motion, and cannot change the linear velocity
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by generuso 6y ago
Going through the ROM code of 8 bit machines from 1980s would still be a tedious exercise. Much of the programming effort was spend on dealing with the limitations of the hardware, rather than on accomplishing anything particularly interest