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Comment: Quantum mechanics is real, like it or not. (Score 4, Insightful) 85

by Animats (#47568933) Attached to: More Quantum Strangeness: Particles Separated From Their Properties

That's a nice result. It's in accord with theory. It doesn't match human intuition based on large-scale objects, but it's the way the universe really works. The theory in this area is well understood; Feynman's "QED" has a good overview.

Ever since the double-slit experiment, it's been clear that this stuff is real. Over the last few decades, more of the weirder predictions of quantum electrodynamic theory have been confirmed experimentally. This is another predicted event confirmed. Nice work.

Comment: Re:$1000, not $300 (Score 2) 43

by Animats (#47568555) Attached to: A Look At the Firepick Delta Circuit Board Assembler (Video)

I guess you're supposed to stencil the paste in first and the put it in a heat oven as if you had done the pick and placing by hand.

Their FAQ contains:

  • TBD - Solder paste dispensing
  • TBD - Selective Reflow via custom ATC head

That's what would make the machine useful for prototyping. Printing a solder paste stencil can be done on a laser cutter, but you need access to one, or you must send the job out. Laying down solder paste by hand with a little syringe on each pad (probably under a microscope) takes longer than manually placing parts and is Not Fun.

Printing solder paste with an ink-jet printer type head has been done. If they can make that work, that will be a big win.

Comment: Re:Citing Wikipedia (Score 1) 148

by drinkypoo (#47567411) Attached to: An Accidental Wikipedia Hoax

It doesn't even take any depth. I've cited wikipedia on my website (the intent was to link to more information, not to utilize it as an exhaustive source) and later gone on to visit that link to make sure it still says what I want it to say only to find out that since I cited the article, the article cited the very page on which I had cited it. Whoever cited my page was either too lazy to check the bibliography, which was at the foot of the page as normal, or didn't care that they were potentially creating a circular reference one reference long.

Comment: Re:Any Help Is Good (Score 1) 51

by drinkypoo (#47564773) Attached to: Airbnb Partners With Cities For Disaster Preparedness

I am glad that someone is thinking about disaster aid but the most neglected problem is the potential for a severe hurricane in highly crowded areas. South Florida can not be evacuated.

If it's not safe in the event of a disaster, then it's not safe now. Therefore, we should be evacuating it now, at least down to a reasonable level of population. You know those maximum capacity numbers that get written inside of businesses? Florida should have one, too.

Comment: Re:A critical need in disasters is housing (Score 1) 51

by drinkypoo (#47564763) Attached to: Airbnb Partners With Cities For Disaster Preparedness

This is a great idea. Getting people to think about opening their homes in times of a disaster before the disaster happens. Sort of like the organ donation sticker on your drivers license.

I don't have an organ donation sticker because there have been paramedics who have outright announced that they don't work as hard to save donors. I will continue to not donate until this is no longer true. If I were to join an organ donation scheme it would involve reciprocity. I might well, although I forget the name of the one I liked the look of, and of course the google results are all scientific papers. They must not have paid google for ad placement, so it's not coming up at all.

Comment: $1000, not $300 (Score 1) 43

by Animats (#47563223) Attached to: A Look At the Firepick Delta Circuit Board Assembler (Video)

Their presentation for investors quotes a sale price of $1000, not $300. At that price they might be able to do it. How well they'll do it remains to be seen.

Their presentation is all about their XY positioning mechanism. But that's not the problem. The hard problem is dispensing solder paste reliably and precisely, sticking the component down, and using hot air to solder it into place. As with low-end 3D printers, most of the problems are where the weld/soldering action takes place. They don't say much about how that's done.

The important thing is doing a consistently good soldering job. Nobody needs a machine that produces lots of reject boards.

Comment: Should I do an ad blocker? (Score 3, Interesting) 326

by Animats (#47561759) Attached to: Which Is Better, Adblock Or Adblock Plus?

I'm behind Ad Limiter, which limits Google search ads to one per page, picking the best one based on SiteTruth ratings. You can set it for zero search ads if you like. It also puts SiteTruth ratings on Google search results. It's a demo for SiteTruth search spam filtering.

This Mozilla/Chrome add on has a general ad-blocking mechanism inside. Unlike most ad blockers, it's not based on regular expressions looking for specific HTML. It finds URLs known to lead to ads, works outward through the DOM to find the ad boundary, then deletes the ad. So it's relatively insensitive to changes in ad code, and doesn't require much maintenance. The same code processes search results from Google, Bing, Yahoo, Bleeko, DuckDuckGo, and Infoseek. (Coming soon, Yandex support, and better handling of Google ads within ads, where an ad has multiple links.)

So, if I wanted to do a better ad blocker, I could do so easily. Should I? Is another one really needed? Are the headaches of running one worth it?

Comment: Cell and battery production in same plant (Score 5, Informative) 91

by Animats (#47559917) Attached to: Tesla and Panasonic Have Reached an Agreement On the Gigafactory

The Tesla/Panasonic plan gets cell and battery production back into the same plant. The battery industry has, for a while, had a model where cells were made in one country (usually Japan, Taiwan or S. Korea, or at least with machinery from there) and assembled into device-specific battery packs near where the end device was produced (usually China or the US.) For the Chevy Volt, the cells come frm LG Chem in Korea, and the battery packs are assembled at the Brownstown, MI Battery Assembly plant.

There's no good reason to do it that way now that the era of cheap labor in China is over. As a rule of thumb, labor has to be 4x cheaper to justify offshoring. The coastal provinces in China have reached that level with respect to US/Japan wages.

Done right, this isn't labor-intensive. Brownstown has only 100 workers in a 400,000 square foot plant, and they're doing battery assembly, which is the more labor-intensive part of the operation. Tesla claims to need 6,500 employees for their 10 million square foot plant, but they're probably counting construction-phase employees.

Comment: "Beginning of mainstream 3D printing" (Score 4, Informative) 61

by Animats (#47559309) Attached to: 3-D Printing Comes To Amazon

But this could be the beginning of mainstream 3D printing.

We heard that when Staples did it.

Amazon's 3D printed product offerings are rather lame. They're not offering any of the more advanced 3D printing processes; for that you have to go to Shapeways. All you can get from Amazon is plastic junk.

Prediction is very difficult, especially of the future. - Niels Bohr

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