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Where Have You Found LED Holiday Lights?

glassware asks: "Perhaps you know that LED holiday Lights last hundreds of times longer than regular lights. Perhaps you know that your local utility company recommends them for drastically lowering your electricity bill. But my real problem is, where can you find them? I've found lousy battery-operated LED lights in some department stores; but even in the best stores I give up after a half hour of searching, and so far I see only one vendor making them. Surely there must be alternatives. Where do you get your LED holiday lights?"

57 of 107 comments (clear)

  1. Askslashdot, not AskGoogle...geez by Kaz+Riprock · · Score: 2, Informative


    Here...Ya lazy bastard

    I mean really. This isn't very askslashdot....it's more like AskGoogle -> "led holiday lights".

    Duh.

    --
    Mordor...a magical, mythical land where women are more rare than dragons--but where every man would rather find a dragon
    1. Re:Askslashdot, not AskGoogle...geez by glassware · · Score: 5, Informative
      Lesson Learned - never ask a question on slashdot without answering all possible snide replies.

      I have bought, tried, and returned many LED light sets. I have hunted at all the stores listed on the ForeverBright where-to-buy page. I have been searching regularly for three weeks now. I have seen the online ordering pages; but somehow I just don't feel comfortable buying mail order when there's only a few more weeks till Christmas, and seeing as how I'll probably have to return them anyway.

  2. Ask Slashdot as advertising by bill_mcgonigle · · Score: 3, Funny

    and so far I see only one vendor making them

    Hmmm... I wonder who might have posted the question...

    --
    My God, it's Full of Source!
    OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
  3. Not quite there yet by TheSHAD0W · · Score: 3, Interesting

    As taken from http://www.es.wapa.gov/pubs/files/2001_holiday_lig hts_fs_es.pdf:

    http://www.foreverbright.com/
    http://www.ccl-light.com/

    Nope, ain't a lot out there.

    I think many rope lights use LEDs. You should look into those.

  4. Perfect... Maybe by Chris+Canfield · · Score: 2

    I've been trying to decorate a bicycle with christmas lights for some time now. An LED String would be ideal, given knowledge of the power requirements of these bulbs. Sadly, it sounds like the Everbrights have the AC-DC conversion at the base of each bulb, but maybe with one of the so-called inferior brands with the transformer at a more inconvienient location would be easier to hack.

    Anyone tried this?

    -C

    --
    This Sig is a mnemonic device designed to allow you to recognize this author in the future.
    1. Re:Perfect... Maybe by silicon_synapse · · Score: 2

      Why not just get your own bag of LEDs, a soldering iron, and a spool of wire and make them yourself?

    2. Re:Perfect... Maybe by Kaz+Riprock · · Score: 2

      There are quite a few different cheap versions of battery-powered regular Christmas lights. I've decorated all sorts of things with these and the worse you need to do is hide the battery pack (size of 2 or 4 AA batteries). They last hours at a time. While LED's would be better for time, the ubiquitousness of the regular lights probably means you can get a string of lights for under $20.

      --
      Mordor...a magical, mythical land where women are more rare than dragons--but where every man would rather find a dragon
    3. Re:Perfect... Maybe by Smitty825 · · Score: 2, Informative

      I know that we are really starting to venture into "off-topic" land here, but these lights for your bike wheels look really cool. I don't have any first hand experience using them, but if you're looking to spend some money lighting up your bike, then this might be an investment...

      --

      Doh!
    4. Re:Perfect... Maybe by dubl-u · · Score: 3, Funny

      You sissy. Real men mine the ore, extract the metals, and make their own wire. And then for the LEDs...

    5. Re:Perfect... Maybe by kps · · Score: 2, Insightful

      It's not that I've bothered to check (this being Slashdot, after all), but maybe they convert AC to DC with, um, like, diodes? Somebody mentioned 80 LED strings, and with them in series, they'd get around 2V peak (which is reasonable) and the whole string would pull 1 or 2 amps.

      (It isn't practical to wire LEDs in parallel, because they aren't particularly uniform in resistance, and besides, the transformer to put out 2V at 2 amps would be too expensive for Christmas lights.)

      By the way, while LEDs have their advantages, they are not, generally, more efficient than other lamps. A current 'super-bright' LED yields around 2 to 5 lumens per watt, with high-end ones (which again are too expensive to be in these Christmas lights) about 10 lm/W. Normal incandescents are around 6 lm/W, although the tiny coloured ones in Christmas light strings are indeed most likely less efficient. Halogen incandescents give around 20 lm/W, and fluorescent tubes around 80 lm/W.

    6. Re:Perfect... Maybe by kps · · Score: 2, Insightful

      Oops, typo in the above post. Watts.


      Also, they might well use two strings of 40 LEDs each.
      That way they'd get brighter lights from cheaper LEDs at the cost of reliability and a little extra wire.

    7. Re:Perfect... Maybe by DRACO- · · Score: 2, Insightful

      Why not try something a little cleaner.. some el strips (electro luminecence). You could super glue these pretty cleanly to the bike body. Im considering ordering up some el strips for the interrior of my car. In my town people always expect me to feature some out of the ordinary gadget somewhere near me.

      DRACO-

      --
      Consider yourself blessed if you are sneezed on by a dragon and only get wet, it could have been a fireball.
    8. Re:Perfect... Maybe by Chris+Canfield · · Score: 2

      Those are very cool. Unfortunately, the point of using cheap lights on this particular bike is that it is a cheap commuter that is perpetually locked up outside, currently in the snow. You wouldn't believe the kind of theft deterrent Duct Tape provides, esp in the kinds of quantities that make it look structural. Cheezy lights go well with that aesthetic.

      On the other hand, This probably would be perfect for large rotating signs at raves... Maybe it would be worth the investment after all. Get enough of them spinning in unison and they could form a semi-transparent christmas tree.

      Ah, holiday spirit.

      -C

      --
      This Sig is a mnemonic device designed to allow you to recognize this author in the future.
  5. Where Have You Found LED Holiday Lights? by alfaiomega · · Score: 3, Funny

    I found mine in my neighbour's garden.

    (I was too lazy to use Google and buy my own, so I stole them.)

    --

    root@aio:~# nmap -sX -iR -p1- # Ho, ho, ho! Merry Xmas, everyone!

    1. Re:Where Have You Found LED Holiday Lights? by nelsonal · · Score: 2

      I think you are joking, but this is a real problem. What sort of creature steals christmas lights? There was this house in my home town that used to put up several hundred thousand lights, creating a winter wonderland. However they stopped when someone stole something like 10% of the lights they put up.

      --
      Degaussing scares the bad magnetism out of the monitor and fills it with good karma.
    2. Re:Where Have You Found LED Holiday Lights? by Wiwi+Jumbo · · Score: 2

      That rocks!

      My girlfriend's parents house is on a pathway and every year they have problems with this...

      One year they actually cut the wires! In seveal places...

      I would *love* to give those little brats a really good jolt...

      --
      Wiwi
      "I trust in my abilities,
      but I want more then they offer"
  6. Fire safe, too by mary_will_grow · · Score: 2, Insightful

    They also drastically reduce the chance of fire.

    Who knew, a dried up dead tree strapped full of extension cords pumping mad current could be a fire hazard?!?!

    --
    Why stick up for big business?
    1. Re:Fire safe, too by Rick+the+Red · · Score: 4, Insightful

      Not using lights at all further reduces the fire hazard. Not killing a tree and leaving it in your house to dry just about eliminates the fire hazard.

      --
      If all this should have a reason, we would be the last to know.
    2. Re:Fire safe, too by quintessent · · Score: 2

      Artificial trees are a good idea.

  7. And where can you find ones NOT made in China? by Gothmolly · · Score: 3, Interesting

    Since I do not support countries which are de jure repressive regimes, forced infanticide, who long ignored an AIDS crisis, and who believe that their people are State property, I do not buy products made in China. Where can you get holiday lights made elsewhere?

    --
    I want to delete my account but Slashdot doesn't allow it.
    1. Re:And where can you find ones NOT made in China? by anomaly · · Score: 3, Insightful

      Hear Hear! I choose to boycott them because of their religious oppression, human rights abuses, and the fact that the trade imbalance with the US entirely funds the ballistic missiles that they point at us.

      It is becoming increasingly difficult to find products not made in China. This is particularly true in the areas of children's books/toys and electronics. I recently had to poke through each model of DVD player offered by a chain store to find ONE not manufactured in China. In one case, the display model was made in Japan, but every single unit of that model on the shelf was made in China!

      Our culture cares more about getting a cheap DVD player or kid's toy than we are about other humans working as slave labor for an oppressive government. It's sad.

      I haven't found a solution other than physically visiting the store and looking carefully for the "made in China" stamp on the box. If you find one, please let me know.

      Regards,
      Anomaly

      --
      But Herr Heisenberg, how does the electron know when I'm looking?
    2. Re:And where can you find ones NOT made in China? by Call+Me+Black+Cloud · · Score: 2

      Yes, but their food still rocks, and that's made here.

      What I don't get is fortune cookies. They no longer contain fortunes. They used to read, "You will live a long and happy life" or "You will enjoy our DVD players". Now they read, "You work hard" or "You are a punk." Where have all the predictions gone??

      On a more serious note, you know someone is getting oppressed...we bought a foosball table from Costco for work. I noticed it was made in China. How cheap must these (heavy!) things be to make if we got a good solid table made in China, shipped to the US, trucked to the store, and stocked on the shelf...er...pallet, for $149? You'd think all the overhead in getting it here would make it cheaper to build them in the US.

    3. Re:And where can you find ones NOT made in China? by bluGill · · Score: 2

      It is an ecconomic argument. I hold to the side that says" They can do whatever they want, I can't control their behavior. However it is immoral for me to support that in any way, and buying their products counts as supporting them - if nothing else it says "I don't like how you act, but keep the cheap (junk) coming and I'll overlook it."

      The other side (which I disagree with) says that spend a lot of money on their stuff, and they will send people over here to build a relation and those people will see our way it better and go home dissatisfied by their goverment. (Obviously I don't buy this arguement so it is hard for me to get it right, hopefully you can see the point)

    4. Re:And where can you find ones NOT made in China? by anomaly · · Score: 2

      It's on two levels:
      1) If what they are doing is not working for them, they might change. I did not mention that I make a practice of writing letters to their president (about once a year) to let him know that there are Americans who know what is going on there, and who refuse to buy their goods. Realistically I know that my boycott has virtually no influence, but a large lake is made of drops of water.

      2) If I send my money to places where oppression does not happen, those countries will prosper and more businesses will move there.

      I can't change them, but I can let them know that I'm not giving them my money unless they change.

      --
      But Herr Heisenberg, how does the electron know when I'm looking?
    5. Re:And where can you find ones NOT made in China? by sjames · · Score: 2

      I know that the boxes of c7 style lights I get are made in Poland. As a bonus, Poland has 130V line current so the bulbs will live a nice long life on 115V here and are still plenty bright.

  8. Bad question, potentially interesting answers by ke4roh · · Score: 3, Insightful

    The Foreverbright site (linked from "holiday" in the intro) has a "Where to Buy" link offering a lengthy list of retailers. I haven't checked the shelves yet, but it seems you should look at those little hardware stores and drugstores rather than random department stores if you want to buy them in person.

    --
    I hate call waitin`~+~~~
    NO CARRIER
  9. bad news re: bulk discounts by timothy · · Score: 2, Interesting

    I called a few distributors, hoping that I'd be able to get a better price if I bought more LED lights at once.

    Short answer is, HA HA HA HA HA HA HA HA HA.

    In any quantity that a regular person would buy (as opposed to, say, someone in charge of site purchases for Disney World), you're not going to get a discount, is the long answer. (I'd like to hear contrary evidence, but that is the received wisdom so far.)

    I'm not going to buy more than 10 boxes, though. I figure 10 boxes (at $20 a pop) is already really pushing it, but I don't want them for "Christmas lights" exactly -- I want them as general string lights which I might happen to use during the winter holidays borrowed from the No. European pagans, but will also set up in my room etc.

    timothy

    --
    jrnl: http://tinyurl.com/c2l8yr / foes: http://tinyurl.com/ckjno5
    1. Re:bad news re: bulk discounts by cybermace5 · · Score: 2

      Forget All Electronics, buy Jameco!

      --
      ...
  10. Um, no? by Andy+Dodd · · Score: 4, Insightful

    Yes, he's saying he's only found one vendor that makes them,

    BUT HE'S ASKING IF ANYONE KNOWS OF ANY OTHERS!!!

    That's NOT advertising. Now if the article were a review of these Forever Lights, it would be a Slashvertisement. But he has pointed out the one vendor he's found, but is asking if anyone knows of other sources. (Some pages, such as the LED Museum, mention, "inferior" lights, but give no details on where to find such lights if you WANT LED lights with a transformer at the base.)

    As to the Ask Google trolls - I've asked Google and 90% of the links are pages that happen to have LED, Christmas, and light on the same page but do NOT have any content related to LED Christmas lights. The only Google links that came up in my search that were actually relevant were the links posted at the beginning of the article.

    --
    retrorocket.o not found, launch anyway?
    1. Re:Um, no? by WoodenBoy · · Score: 2, Informative
      As to the Ask Google trolls - I've asked Google and 90% of the links are pages that happen to have LED, Christmas, and light on the same page but do NOT have any content related to LED Christmas lights.
      Try searching for "led holiday lights". With quotes.

      Search engines have supported quoted phrase searching for quite some time now. I'm always surprised at the number of people who don't know about it (or have failed to read any searching tip/faq page, such as Google's).
  11. I'm a dealer by Mononoke · · Score: 3, Informative
    I'm a dealer for National Specialty Lighting. Although mostly known for their rope light (including LED rope light), they also make pro-grade xmas lighting.

    Here's their page on LED xmas lights.

    "Suggested Retail" is $11.95 per string. Case-lot discounts begin at 24 strings.

    Just FYI, of course. I'm not trying to advertise here, just inform. Many electrical supply houses (where the real electricians buy stuff) are National Specialty Lighting dealers. You might try one of them.

    --
    NetInfo connection failed for server 127.0.0.1/local
  12. power source on those? by timothy · · Score: 2, Interesting

    Mononoke:

    Can you clairify whether those strings need a wall wart, or if (like the foreverbright ones) they just plug into a wall directly?

    (Also, white would be nice :))

    timothy

    --
    jrnl: http://tinyurl.com/c2l8yr / foes: http://tinyurl.com/ckjno5
    1. Re:power source on those? by Mononoke · · Score: 2, Interesting
      Can you clairify whether those strings need a wall wart, or if (like the foreverbright ones) they just plug into a wall directly?
      I haven't held any in my hand, but I'll bet they are non-wall wart, with the 'lamps' in series.
      (Also, white would be nice :))
      Very nice. White LEDs are still a bit too pricy yet, though.

      --
      NetInfo connection failed for server 127.0.0.1/local
    2. Re:power source on those? by quintessent · · Score: 2

      AFAIK, white LEDs are really colored LEDs with a phosphorescent coating that converts some of the light to other colors, to make the overall thing look white. So you can guess this would be more expensive, less efficient, and maybe not last as long.

  13. Why use LEDs?? by ScottG · · Score: 2

    Now I know that LED holiday lights may seem all hi-tech and geeky, but regular ones are so cheap and readily available, the LED ones just don't seem worth it.

    The 80 light LED set linked to above costs about US$20 and come only in red. I can go to my local supermarket and get a regular 100 light set for $US1.47 in a variety of colors or multi-colored. For the cost of one LED string, I can buy 13 regular ones, and still have change left over. Thats 1300 lights vs 80 LEDs!! Sure the LEDs are more effiecient and sure, they will last longer, but not enough to come anywhere close to making up the cost difference.

    I think a better "Ask Slashdot" would be: Gee, holiday lights are so darn cheap these days, what other uses can we find for them?" (and no, they won't run Linux, and no, you can't turn them into a web server....or can you?)

    --
    Hey, who else could go for some flapjacks right now?
    1. Re:Why use LEDs?? by ScottG · · Score: 3, Insightful

      The aesthetics are certainly debatable, but I don't find the difference in appearance between to the two lighting technologies to be interesting enough to debate.

      As for the cost difference: Lets actually run some numbers:

      Let's assume a string of traditional lights consumes 100 watts and a string of LEDs consumes nothing. (I think you would agree that both of these assumptions are more than fair to the LEDs).

      If we energize the lights 8 hours per day for 30 days during each "holiday season", that is 240 hours per year that the lights are in use.

      If we assume an electricity cost of US$0.10/kwh(which is typical around here, but varies widely depending where you live), that is an annual electricity cost of US$0.024. Lets just go ahead and round this up to 3 cents.

      Let's further assume that the LED lights would last forever, but the traditional lights need to be replaced each year at a cost of US$1.50. We now have a total annual cost for the traditional lights of US$1.53 compared to the one time cost of US$20 for the LED lights.

      That means it will take the LEDs approx 13 years to reach the break-even point against the traditional lights.

      And remember, I made all my assumptions in the favor of the LEDs. Real LEDs do consume some power and real traditional lights don't need to be replaced every year and real LED lights will not last forever (the LEDs themselves might, but the wiring, etc will deteriote due to exposure to sun, weather, etc). So, in reality the break-even point is probably much more than 13 years.

      If you just crave the LEDs, then go ahead and buy them, but don't try to claim that you are saving money by doing it.

      --
      Hey, who else could go for some flapjacks right now?
    2. Re:Why use LEDs?? by dondelelcaro · · Score: 2

      Error. Third grade math.
      $0.1/kwh*0.1kw*240hr=$0.024? Yeah right. More like $2.40.

      Lets go ahead and add on the $1.50. Now all of a sudden we're at $3.90, and ~5 years to break even, assuming that the LED lights cost $20 as much as the traditional lights.

      That's not even counting the value of your time wasted with a voltage detector debugging those pesky light strings.

      --
      http://www.donarmstrong.com
    3. Re:Why use LEDs?? by ScottG · · Score: 2

      Oops!

      You are, of course, correct.

      But even with my "factor of 10" error, I think my conclusions are still valid. It still takes 5 years to pay for itself. I think the bottom line is still: The electricity costs (and therefore potential savings) for either type of lights is so low as to be negligable compared to the extra cost of the LEDs.

      You shouldn't have to spend any time debugging the lights if you are replacing them every year (which was assumed in my calculation).

      And remember, a burned out bulb is not the only source of failure - a broken wire or damaged connector can happen to both types of light sets.

      --
      Hey, who else could go for some flapjacks right now?
    4. Re:Why use LEDs?? by /dev/trash · · Score: 2

      Can i move in with you? I'd love to not have to pay utilities.

    5. Re:Why use LEDs?? by Phoenix · · Score: 2

      One word comes to mind that explains the value of LED Lights.

      Waste

      First year on my own I bought a controlable string of 200 lights for $20 at Sams Club. Loved them to death with all the various settings it had (favorite was the slow fade between colors) But then next year, regardless of the fact that I put it away nicely in it's original package and inspected it before putting it in the closet, next year I had to buy a $2.00 string for spare bulbs.

      Year after that I had to do it all over again so I said the hell with it and bought the $2 string and used it, tossing out the broken controled string and the previous string that was canabalized for parts. Year after than same damn thing...dead bulbs and I bought another string.

      $26 spent on bulbs and all that copper, plastic and glass sent to the landfill.

      Year after that I learned about the LED bulbs. Spent $20 on them. Used them for my third year now and still no dead bulbs, no frustration, no waste.

      $2 dollar strings every year for 10 years, or $20 dollars for a string that will last you the same 10 years. Advantage, no waste.

      And if it does hold true that they will last 20 times longer than a standard string (my personal record for an intact string has been 2 years with an average of only one) You'll save money in string costs, energy costs, and trips to the stylist to hide the fact that you ripped two huge chunks of hair out and need to hide it.

      Phoenix

      --
      -- Wiccan Army, 13th Airborne Division "We will not fly silently into the night"
    6. Re:Why use LEDs?? by coloth · · Score: 2

      LED Christmas lights are useful in the same way that my belt-mounted server, my chainmail jumpsuit, my GPS glasses, my trans-species Pet ID chip implant, my aerosol-lunch bandolier, and my camel-based office annex with solar array and client sidecar are useful.

      OK?!?

      --

      Machines take me by surprise with great frequency. -A. Turing

    7. Re:Why use LEDs?? by JUSTONEMORELATTE · · Score: 2

      I think a better "Ask Slashdot" would be: Gee, holiday lights are so darn cheap these days, what other uses can we find for them?"
      You had to ask...
      I took a 50-bulb string and re-spliced the wiring every 5 bulbs. This converts a 120v string to a 12v string. My Jeep's spare tire is centered on the tailgate, just begging for a wreath at Christmas time. Lots of Jeeps have this, but mine lights up when I step on the brakes.
      I've had this for years. This year I added a centerpiece -- I found a 4" plasma ball at Walgreens (for $8) that already ran on 12VDC.
      I love it, my freinds love it. Strangely, my wife (and my friends' wives) just roll their eyes. Go figure.
      --

  14. Where? by drydiggins · · Score: 2, Interesting

    Raley's (Supermarket) Placerville (Calif) 'bout eleven dollars a string. red, amber & multi(?) color. (Just thought a straight-up, non-hostile reply might be novel.) Cheers!

  15. Marked down, last year at Kmart by ecloud · · Score: 2

    It was a good deal too at half-price. I forget exactly what price though; maybe $6 or 7? And I only found one string; the rest had sold out already. They are shaped like stars, run on 120V and seem to work well but I haven't put them on anything yet. This was the day after Christmas at a Kmart in Scottsdale, AZ.

  16. Labor cost by 0x0d0a · · Score: 2

    Nothing sucks more than trying to figure out which light in a series burned out -- and the LEDs last 20 times as long. And they don't go out on impact.

    Every year, I plug in the lights and "debug" the strings, figuring out which lights are dead. It'd be a lot easier to just have them work.

  17. Re:rope lights using LEDs? by cybermace5 · · Score: 3, Interesting

    Better idea, go to Target and grab a few coils of their electroluminescent wire, in the car-pimping department.

    --
    ...
  18. Let me hook you up! by cybermace5 · · Score: 3, Informative

    Send me an RFQ. Spec the desired length, spacing, colors, diffuse or water-clear, and pattern. I will reply with a quote for manufacture. LED terminals protected with heatshrink tubing. Blue LEDs will cost approximately ten times more, a bipolar set with alternate LEDs blinking from red to green will be about twice cost of steady-glow or alternate-blink.

    --
    ...
  19. Re:rope lights using LEDs? by __aaahtg7394 · · Score: 2

    And grab a tape pinstripe while you're at it. It'll make your christmas tree go faster!

    (on-topic: personally, i have an assload of the 2$-a-string lights from wally world, which i have strung from the ceiling with fishing line to give a nice soft light in the living room)

  20. Re:off topic... by Rick+the+Red · · Score: 2

    1) China
    2) North Korea
    3) Iraq
    4) Iran
    5) The United States of America

    --
    If all this should have a reason, we would be the last to know.
  21. 120 Blue LED Christmas Lights = �29.99 by brejc8 · · Score: 2

    Maplin has blue LED Xmas lights. They're £29.99 and that gets you 120 blue LEDs. Thats 25p each! They say theyre discontinued but a friend has seen them still in stock.

  22. from Dave @ Forever Bright by voisine · · Score: 3, Informative

    Forever Bright is really the only way to go.
    They have a patent on the system they use that
    doesn't require a transformer and can be strung
    end to end. Here's the response I got from
    sales@foreverbright.com

    All of the retailers listed on our Website
    carry our product line, but they did not stock
    all locations. This left retail availability
    very poor in some areas and many consumers
    frustrated.

    We're trying hard to convince them to stock all locations as consumer demand for our products
    is very high. It often helps when consumers
    tell retail store managers they're looking for
    a particular product or brand. The managers
    report the requests to corporate offices for
    future inventory considerations.

    Raley's Drugs stocked the Forever Bright line
    in all of their locations and we believe they
    may have stores in your area. American home
    hardware may also be worth a try. Sorry, we
    can't sell direct.

    Thank you for taking the time to write us.

    Happy holidays,
    Dave at Forever Bright

  23. Probably few vendors because LEDs suck... by BigBlockMopar · · Score: 3, Informative

    ...for this purpose.

    Yes, he's saying he's only found one vendor that makes them, BUT HE'S ASKING IF ANYONE KNOWS OF ANY OTHERS!!!

    I don't know of any others. And I can't imagine that, for the moment, there will be too many of them.

    Listen, here's the problem. I love LEDs, but with current technology, they're not really appropriate for this application.

    First off, let me state that, for Christmas lights, tungsten bulbs - especially parallel-wired with 120V bulbs - are a huge improvement over the previous tradition of candles in the Christmas tree. But they're still not a great idea:

    • Heat to ignite tinder-dry Christmas tree and the ghastly ornaments the neighbor's kids made
    • Energy useage
    • Line power around potentially conductive metallized plastic tinsel
    • Broken bulbs expose line voltages to user. (This applies even with series strings where the bulb voltage may be as low as 1.8V; when the circuit is opened, there's 120V across the bulb socket, with enough current to kill)

    An alternative would be gas discharge lamps, like those little flicker-flame neons. But they're not without their flaws:

    • Dim
    • Limited availability
    • High prices
    • Limited choice of colors
    • Broken bulbs still expose 120V, generally without a series resistor to limit current - ie. potentially lethal shock.

    LEDs are a great idea, since they run cool. They're commonly available in a bunch of colors, and with triple-die LEDs, the lights could literally be any color and could change on-the-fly. But there's a downside:

    • Expensive
    • Require heavy and expensive transformer or switching supply to be practical
    • Dim
    • Small viewing angle

    Sure, LEDs are cheap, but they're still an order of magnitude more expensive that the little miniature lights on those cheap Made In Bangladesh light strings. Most people won't pay the extra, will they? (If in doubt about whether consumers know or appreciate quality, consider again VHS versus Betamax, or Microsoft versus Apple.)

    The transformer or switching supply would absolutely constitute a benefit to consumers, in that it would virtually eliminate the possibility of getting a shock off the string. But try to explain it to consumers: "Point the mouse at the little picture of a computer on your screen. Click twice quickly." "Stop it! You're being too technical!" Therefore, it would really only become an extra burden to manufacturers.

    Dim. LEDs are a hell of a lot brighter than they were a few years ago, and while they throw out a lot of light, it's over a fairly small viewing angle (typically under 45 degrees). The net output is miniscule compared to a tungsten bulb. Most LEDs can't even be seen to be lit in direct sunlight - but even my miniature light set is clearly visibly on.

    Viewing angle is small. Readily available high-intensity LEDs are generally meant for automotive taillight and traffic signalling duty. They usually only have a viewing angle of 12.5 degrees. Your tree will look pretty dark if each light is only visible for 12.5 degrees of a walkaround.

    How could this be solved? Maybe clear LEDs with frosted housings in order to make the light diffuse over the entire surface of the LED? Good idea, but it's still not bright enough to be satisfactory for that purpose. Nor does the frosting, in practice, diffuse light as evenly as you would want.

    My perspective? I love LEDs. They're my favorite modern electronic component. (Second is probably the MOSFET. Overall favorite is vacuum tubes.)

    I've got a 1960s or early 1970s Sound A-5000 power amplifier (try doing a Google search for that! Anyone got any info on the amp, e-mail me) which blew its tungsten pilot light. The light was a GE #47 - 6V, 150mA pilot light. Consumes 0.9W off the amp's low voltage supply to light up a dim red indicator on the front panel.

    So I took a traffic duty red LED that I had kicking around. Clusters of these are used to make brake lights and traffic lights. The LED is rated for 3,000MCD at 12.5 degrees with a forward voltage drop of 2.1V and a peak current of 30mA.

    The resistor was calculated as follows: Vin-Vdrop = 6.3V - 2.1V = 4.2V. R = E/I = 4.2V/0.03A = 140 ohms. Next standard value is 150 ohms, and I used that. When I measured the current through the LED, it was (unsurprisingly) 28mA, 93% of the LED's rated maximum. The forward voltage drop was 2.1 volts. The LED is being driven harder than I would like, and it gets warm after a few minutes.

    Even so, the dim red indicator on the front panel is still dim. Right on axis, it'll blind you, but from any other angle, the indicator is still too dim to be useful. Improvements were made by actually grinding down the end of the LED and using clear hot-melt glue to attach it to the back of the bezel, but it would still be unacceptably dim on a finished product. Certainly dimmer than the old GE #47 was, not even as bright as the panel LED on the front of my Viewsonic. And that's with a traffic duty LED, pushed hard.

    In summary, naked LEDs are great when viewed on axis, used as indicators or when a fine shaft of light is required. But trying to diffuse them or expect behavior similar to an incandescent bulb is still pushing things... for the moment.

    --
    Fire and Meat. Yummy.
  24. Re:Good Vendor List by yancey · · Score: 2, Informative

    Ehh, try this Vendor List instead, since the link doesn't format correctly when I post it as plain text. *hint hint*

    --
    Ouch! The truth hurts!
  25. /dev/girl by Jaeger · · Score: 2
    I want /dev/girl.... Is there a kernel patch?
    Most implementations are proprietary, so they have to be compiled in as a (tainted) module. The advantage if those implementations, though, is that you don't have to share your /dev/girl with anyone else, which many people tend to prefer.
  26. Final Update by glassware · · Score: 2
    Hi all,

    Don't know how many of you are still interested, but here's my last update. I finally found Forever Bright lights for sale at a local Ace Hardware. $24.99 for the blue lights, $14.99 for the red/green lights. Pricey, but worth it if they reduce my electric bill noticeably.

    So, I brought them home. The red/green lights are dim. Not very bright at all. The individual lights are small, although the colors are evenly bright throughout the entire string of lights. My first impression was so-so.

    The blue lights were spectacular. Blazingly deep blues, the larger plastic around the LEDs make them seem much bigger than usual, and the color is just wonderfully satisfying. I plugged them in immediately and left them on all night. My first impression was extremely positive.

    Now, one thing I noticed is that the lights appear to have a 60-hz cycle. If you wave the lights back and forth in the dark, you get a strobe effect. It seems strange to me, but I got used to it. You can only notice it strongly when you are close to the lights and/or moving past them quickly.

    So, next morning I plugged my lights back in, and you know what? Both strings of lights were broken. The red/green string burnt out half its length. The blue string was completely dead. I've tried replacing dozens of individual lights, but without much success.

    It seems to matter which direction the lights go in. If they go in the sockets backwards, it seems like they don't work. But then sometimes I'll plug the same light back in the same socket and everything will work again. It doesn't make much sense.

    So, I'll probably return the whole set and wait for the lights to get better for another year. Sorry to disappoint.

    --Glassware

    1. Re:Final Update by glassware · · Score: 2
      I didn't see any of the white LEDs available. Which products are these? The only ones available at my local store were the old school, 100 light set of red/green; and the 35-light set of sapphire blue. The sapphire blue set is the one pictured here.

      The bulb casing on the red/green lights is pretty bare - it's a standard LED stuck in what appears to be a standard set of christmas light wire. The bulb casing on the blue LEDs is the new, oval sapphire style.

      On the web page, the foreverbright guys suggest to return the set and get a replacement - I'll probably try that tomorrow.

      Where did you find your white ones?

    2. Re:Final Update by glassware · · Score: 2

      Nice one - I wasn't aware you could smooth out AC with diodes like that. Is there any reason you can think that the manufacturers didn't do this?