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Yes, you would need an independent wire for each LED, but you could mount the control board inside the chandelier. The ten wires would run to the control board. The only thing which needs to run outside the chandelier is the pair of wires supplying power. Everything inside the chandelier is...

Not a problem. You could just run a pair of wires from the low-voltage flicker control board to wherever you have the power supply. Total wires coming from the chandelier for both flicker and illumination would be four-all low-voltage.

You could do that. Perhaps put another set of LEDs next to the high-powered primary ones, and wire those to a small flicker control board which is placed inside the chandelier. You could probably also fit the power supply for this ( small 120 VAC to 5VDC or 12 VDC converter ) inside the...

Umm, yeah. The only issue with hollow tubes as opposed to solid rods is worse heat dissipation. I probably need to experiment a bit here to see how warm the LED would get. A tube with 1/8" walls might be good. We can mount the LED on a circular piece of aluminum ( or even a copper penny ) on...

No, shouldn't be an issue. The LED ballast is sending DC to the LEDs. There aren't an RF or other issues with DC. You can probably put the ballast a mile away from the chandelier without any problems. The only issue is for the wires to be heavy enough to carry the current without heating...

I'm surprised how bright the bottles look even with the sun lighting the room. BTW, I found a nice dimming ballast for this project which will make our lives worlds easier: http://www.newark.com/roal-electroni...ver/dp/69R7347 It works on a standard lamp dimmer. A little pricey but well worth...

I just saw this thread but it seems mubs beat me to it with the probable answer. Yes, what you describe seems to be exactly the case here. If you can open it up you might be able to correct the problem ( assuming you can find where the "neutral" wire is connected to the body). On another...

On a power output per kg of body weight measure humans are pretty pathethic as animals go. A leopard or cheetah running at full speed is likely developing upwards of 10 kW and weighs roughly the same as a human. Even a common housecat can run at up to 30 mph. More on human power output...

This actually applies to both humans and electric motors. An electric motor can typically output several times its continuous output for a very short time, and lesser multiples for longer durations. As for humans, I've more or less figured out my own output levels based on my speeds and the...

Thanks guys for the birthday wishes! Amazing how time flies. It seems it wasn't all that long ago I was 20 and now I'm two short of the big 5-0.

Ouch! $100K for a watch? I'd want it to take me backwards or forwards through time for that price.

That's exactly the problem. None of the technology roadmaps I've seen can get us much past 10 TB drives. And nearly all of them will increase the cost per drive, even though cost per GB will still drop due to increased areal density. Also, we're already experiencing reliability problems from...

The biggest difference between mechanical hard disks and mechanical watches is the fact that watches are fairly low-tech. One person and the right tools can grind gears, make springs, pretty much do the whole operation. The raw materials for this have many other uses, and will always be...

It actually does stop using that last 1/8%. I just found this out when the 150 GB NTFS partition on my boot drive was full. Chkdsk still said I had about 190MB free but Windows refused to write to the disk.

Yes, I know the proper spelling. I was just making a joke since I always see "brakes" mispelled as "breaks" all over the Internet. It's actually one of my pet peeves.

Bicycling under the influence is not explicitly illegal in New York. However, a drunk cyclist can be charged with reckless endangerment or public intoxication, just as a pedestrian can. All that said, I'm not sure I would bike drunk given how it affects both coordination and judgement. The...

Here's some interesting info on the subject TRIM is a brand-new ATA command that the OS will issue to the SSD when a certain request is made, such as Delete, Format or Discard. What it does is rather simple, but it's immensely helpful. When you either delete a file, or format the entire SSD...

Any zerofill software ought to be enough. Unlike magnetic disks, by their nature SSDs don't partially retain older data when sectors are overwritten. A cell is either a zero or a one. If you flip everything to zeroes, the old data will be completely gone beyond the ability of even the NSA to...

Translation: Hitachi sees magnetic storage as a dying technology and wants to sell off its disk division while they can still get something for it. In ten years time tops, magnetic disks will be as obsolete as CRTs are now.

Thanks Doug for the illustration. It neatly shows what time and I have been saying. Another thing I'm thinking here regarding the margins on gasoline also applies to hydrogen. Assuming the margins would be similar, then that's yet another nail in the coffin. I've seen a lot of gas stations...

I have all my hidden files visible in Explorer. Besides that, on the drive in question the only system folder is the restore folder, and that's empty. Anyway, it looks like I more or less figured out what's going on here. It seems when using the NTFS, Windows reserves roughly 1/8% of the...

Actually at about 300 miles range is probably a non-issue. 1000 miles would just by the icing on the cake. By the time most people drive 300 miles, they'll be stopping at least 30 minutes to eat/use the restroom. We'll certainly have 30 minute fast recharge at rest stops once enough people...

SD, it all depends upon how far you regularly travel. If most of your trips are within the range of the Leaf's battery, then it probably makes sense. You could just rent a gas car for the few times a year where range is an issue. On the other hand, if you regularly make trips exceeding the...

Yeah, water basically recycles in the ecosystem, so we never really "use it up". We can get all the fresh water we want from desalizing seawater, provided we have an energy source to do so. That's really the crux of the problem-we don't have an abundant enough source to start desalinating...

Well, I never said petrol was safer than hydrogen. In fact, if petrol were something brand new, I would guess we would be prohibited from using it in vehicles. That picture reminds me why I pretty much avoid car travel, and totally avoid plane travel. :eekers: Putting aside whether or not...

Is the 11TB array empty and freshly formatted? If so, then check the free space and used space. Now copy any file into the array, and delete it. After that either restore it, or empty the recycle bin. If your system is behaving like mine, then you'll suddenly see less free space. Since the...

Except that the deleted file here was only a few kB, and I suddenly lost 2.44GB of space after I either restored it, or emptied the recycle bin.

According to both chkdsk and defrag, the MFT isn't taking a huge amount of space. The MFT is only using about 128MB on the 2TB drive. Rather, it appears by default that Windows considers roughly 1/8% of the drive space to be "used" for recycling purposes when it reports the amount of free...

Ugh, it seems this behavoir is normal. I just checked one of the partitions on my 200GB drive. Total space is 150,271,983,616 bytes. Windows reports the free space as 102,551,552 bytes. However, chkdsk reports 289,656,832 bytes available on disk. The "missing" space is 187,105,280 bytes, or...

That's what it looks to me like it's doing.

The controller shouldn't need heatsinking. Typically my LED drivers are 90% to 95% efficient, depending upon how close the LED string voltage is compared to the input voltage. As such, you're usually talking about a watt or so of heat in the controller. Making the candles out of aluminum rod...

Well, I think I partially solved it, or at least found out what's behind the problem. After reformatting the disk, my free space was back to 2,000,270,127,104 bytes. I tried deleting and then restoring a file from my other hard disk. After I restored it, I noticed that the free space on the...

It all depends upon what voltage the charger sends to the vehicle. Of course, there's probably an upper limit on that for safety reasons. Offhand, I would probably say about 2000 volts. Reasonably-sized conductors ( about the size of jumper cables ) might be able to carry 500 amps, so you...

If you can take a few pictures of it that would be nice. I basically want to get some idea of how much space I have to work with where the emitters will go. Also, this will let me figure out heatsinking options ( i.e. size, shape, etc. ).

Here is a great cost analysis of FCV versus BEV: http://www.metricmind.com/data/bevs_vs_fcvs.pdf Even not accounting for the cost of FC infrastructure, BEVs unsurprisingly come out ahead.

I also forgot to mention in my last post that I do in fact see a great role for hydrogen fuel cells-basically as energy storage to smooth out the intermittant power generation of renewables like solar or wind. This is where they shine. Their inefficiency compared to a battery doesn't matter...

Their math is WAY off. A typical BEV battery pack for 150 mile range is about 30 kW-hrs. Let's say the charging efficiency is about 85%. Therefore, you need to pump about 35 kW-hrs into it. To do that in 5 minutes you need a charger which can deliver 420 kW. With a 150 kW level 3 charger you...

That shouldn't present a problem. I agree you probably need to have all ten light sources flicker randomly and independently for good effect. I'll have to think whether and how this can be done with minimal complexity. Actually, probably closer to 1900K. The idea of using both amber and...

Despite all the hoopla about fusion as the ultimate power source of the future, the truth is pretty depressing. Especially sobering is the fact that starting up a single commercial fusion reactor will require more tritium than currently exists on Earth. Sure, deuterium fusion is a better...

At this point the idea of battery swapping is dead. I wouldn't care for the idea anyway for the reason SD mentioned. Today's batteries can charge in 5 minutes given a suitable charger. As electric cars comprise a greater percentage of vehicles owned, doubtless you'll see gas stations also...

Do you have space inside the chandelier to fit a couple of 1" x 1" x 1" boxes? That's all we'll need for the internal electronics. All you'll need coming out of the top is a pair of wires to hook up to the power supply. This will need its own controls. A standard lamp dimmer will only work...

Nothing wrong at all with that idea other than the added cost of the bank of batteries. I'll go one step better, however. It makes even more sense if you can dual purpose the home battery bank. The majority of the time fast home charging probably is just not needed, but I can see people...

Exactly what would you want me to try here? I'm not really resisting your suggestion. I just don't know any other method here to compare folders than the one I used. I you tell me step by step what you want me to do, I'll gladly do it. I only have two data folders on the drive in question...

I've surface tested the drive about a dozen times already. All is well. I used diskpar to partition the drive. Maybe I should do it over with diskpart and see if the problem reappears? I just have to figure out the parameters to use with diskpart to start the partition at sector 64 instead...

The difference between the used space of the folders between the compressed and non-compressed drives is minuscule. For example, one folder used 15,148,750 bytes more on the uncompressed drive than on the compressed drive. I'm using 4K allocation units on both drives. Also, the page file is...

All I copied so far were two DVDs I ripped. Yes, the original folder had compression while the new folder didn't. However, since these were already video files with built-in compression, they don't compress much. They take about about 0.01 GB more on the uncompressed drive. Here's the...

Yes, hibernate is off, the recycle bin has no reserved space, system restore is turned off on this drive. I don't really know anything about shadow copy, but it looks like it's off. Any other ideas here? Lunar, my beef with the whole base2 thing is we already have conventions for it-KiB...

I was talking about the way he stacked the drives before he put them in the enclosure. Why didn't he just leave them in whatever container they came in until he was ready to mount them?

I got nervous just looking at the way those hard drives were stacked. And then of course they're also on a carpet with all the attendant static discharge problems. :erm: I'm amazed how many people are unaware of how to properly handle hard drives. 70TB? I couldn't fathom filling that much...

From what I've read, XP 32-bit should be able to handle drives up to 2^32 sectors. With 512-byte sectors, that's 2,199,023,255,552 bytes. I've read of a few cases of motherboards which couldn't handle even 1 TB drives. My A7N8X-E was one of them, but I updated the BIOS. It had no problem...