neolefty.org - Neolefty | Less Political than it Sounds

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DomainsData.org: Neolefty | Less Political than it Sounds

Title:

Neolefty | Less Political than it Sounds
Age:

11 years old
Alexa Rank:
Total Sites Linking In (Alexa):

1
Domain's IP Country:

United States
Status Code:

OK
IP Address:

52.27.221.63
Description:
Keywords:

neolefty.org Whois Information:

1.

Domain Name:

neolefty.org
2.

Domain Age:

11 years old
3.

Name Server 1:

ns51.domaincontrol.com
4.

Name Server 2:

ns52.domaincontrol.com
5.

Created:

Sunday 13. March 2005
6.

Expires:

Tuesday 13. March 2018
7.

Domain Registrar:

GoDaddy.com, LLC

Website Important Html Tags:

TAG
TEXT
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A spirit of service:
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Technology keeps making life easier:
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Fair distribution of resources:
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Less Political than it Sounds
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Categories
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Recent Comments
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Recent Posts
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Archives
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Meta
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If life is easy, what will motivate you to do difficult things? A spirit of service?
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Can you truly be unemployed if you are looking for ways to be of service (and not desperately poor)?
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What proportion of people take advantage of the system?
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Where can innovation come from, if everyone has access to information, reasonable resources, and if we celebrate service?
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The sheep had to be juiced down by power engineer Adam — I think he used 3 good batteries and a dud instead of 4 good batteries, because it was just too vigorous otherwise.
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The navigation system required the most complex computer of the three; Adam had 16 bits to work with on his main bus, which he had to divide into address and data lines; I think he settled on 10 bits for addressing and 6 bits of numerical precision in his trigonometric lookup tables. That way he could have 1024 instructions, of which he probably used 1023. While the vision system was being debugged, Adam and John had to find creative ways to test the navigation and driving blind. Because of their preparation, the whole thing basically worked the first night we plugged in the vision sensor. I think it was only possible because of Adam’s love of trigonometry and navigation. In his spare time he was downloading publicly available street grid data and displaying it interactively in ASCII on his home computer — a precursor to modern web-accessible maps.
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The vision system did simple light-dark thresholding and looked for blobs. We didn’t have a wide-angle lens, so we jammed our camera up as high in the ceiling as we could, to get about an 8-foot square field of view. My favorite feature was the debugging display, visible at 1:42, which was an RGB screen hooked straight to various internal signal lines of the vision system. It showed a raw greyscale camera channel in green, thresholded blobs in red, and the center of one of the blobs in blue (but aliased into a grid and with computation noise mixed in because I ran out of wiring space). You could see it compute the blobs at the top of each frame and then settle out into a clean debugging pattern that followed a blob around. It’s briefly visible in the background.
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The mechanical robot was amazingly reliable. John built it out of proven 6.270 parts, including what must have been at least 3 pounds of cross-linked LEGO Technic pieces, two small DC motors, rechargeable lead-acid motorcycle batteries (housed in the chassis itself) and a pulse-width modulation circuit. After we tweaked constants to match slight difference between the two drivetrains, the robot could go straight or curve along fairly accurate arcs. But even if it wasn’t exact, the feedback loop from sensor to navigation planning was tight enough (30 hertz?) that corrections were pretty immediate. At about 4:00, for example, it navigates tightly around the sheep and butts it from the other side. (Another, less fortunate team the same semester used a different brand of toys for their robot, along with stepper motors, which are theoretically simpler to control digitally but proved to be much less mechanically robust. Their robot hardware never did function properly, but the teachers were understanding and graded them well based on their circuits and software.)
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You get to lie down on a heating pad.Â It’s awfully nice.Â The apheresis machine (which centrifuges your blood, keeps what it wants and returns the rest to you) gives you extra saline, and it’s cold.
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My employer
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You can go in half as often as whole blood donation and still give the same quantity.Â After all, most of what hospitals need is your red blood cells; they’re happy for you to keep the rest.

neolefty.org IP Information:

1.

Ip Address:

52.27.221.63
2.

Country:

United States
3.

Status Code:

OK
4.

Region Name:

Oregon
5.

City Name:

Boardman
6.

Zip Code:

97818
7.

Speed test:

not available

neolefty.org Alexa Information:

5 Websites linking to neolefty.org:
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