I'm doing a craft project and would like to install two red LEDs that are powered by a battery pack with an on/off switch. I would love your opinion-advice on what to buy and where to buy it. [more inside]
My flat screen TV (LCD-LED) is not flat. Help? (Pics inside.) [more inside]
Can anyone recommend a book or website to help me in making a small led light? [more inside]
Where can I buy 50W equivalent LED lights that work outdoors, operate at 120V, and are of the standard base type? I simply cannot find a bulb that meets all three criteria! [more inside]
What is the best direction to go in for LED accent lighting/throwies on a budget that demands maximum bang for the buck? [more inside]
Help me find or make a shade of some kind for my recessed kitchen LED lights. [more inside]
Concerned about "backlight bleed" on Samsung 40" I just bought, can you help me out? [more inside]
I'm looking for a physical countdown clock that counts down to an arbitrary time. Ideally, it would be similar to the one that Robert Khoo has in the Penny Arcade TV Show. I believe this is the clock in question and that underneath the "New Year" is a whiteboard. If I could find one just like this, that would be great, otherwise any digital countdown clock would work fine.
School me on light bulbs! My lamp and overhead light bulbs just died, and I'd like to use the opportunity to rethink the type I'm using. I'm totally ignorant in this area, so I'll give as many details as possible, inside the fold.... [more inside]
Electronics help. I'm looking for a good informational/tutorial web site for working with high power LEDs 5 Watts and up. [more inside]
I would like to buy a home entertainment system. I would like to listen to music, watch television, movies, and play videogames. I would like to have Netflix. I would like to stream media from my network or the cloud. I want great sound but I am not an audiophile, although I am not averse to spending a lot on speakers. I do not want to spend more than 8 hours doing research. I will spend up to $2500-$3000. How do I attack this problem? Can you recommend specific TV's, receivers, speakers, or stuff like a Roku box? Can you recommend sites that provide easy to understand, objective reviews of equipment like TelevisionInfo? I do not want to hit the forums if I don't have to. Can you recommend specific configurations of equipment or point me to sites that supply this information. I feel like if I don't get pointed in the right direction, I am going to over analyze this and spend far too much time that I don't have. I just want a rocking home entertainment solution for my family that I won't want to upgrade a week later.
I'm setting up my "off the grid" solar lighting system in my home, and I'd like to connect the battery to some LED lights. It's a 12 volt DC battery - Do my lights have to be 12 volt also? If they're LED bulbs, they'll have a transformer inside; will that allow me to use them, or do I have to have a voltage converter or something? I've got some edison-style LED bulbs around the house for 85-265 volts. Thanks in advance for any help. pictures and web links that can explain things simply are helpful. (An earlier, relavent post: http://ask.metafilter.com/182209/How-to-run-some-lights-from-a-solar-panel)
I would like to buy a 32 inch LED TV. What brand do you recommend?
I want to drive 20ish LEDs, should I run them as series or parallel and why ? [more inside]
I'm looking for a battery powered, light-up soccer ball for playing at night. [more inside]
how to output from a PC to a screen that is 24 pixels by 20 pixels? [more inside]
Aiming to buy an LED projector, a market I know little about. [more inside]
What is going on in LED lightbulbs? I mean the devices, not the industry. [more inside]
How to calculate the cost of LED lighting. Or... renting my apartment, LED lights, energy conservation and fiscal sense. Please help me! [more inside]
I'm looking for a battery powered LED light to replace the corded light in my illuminated globe. I'm transferring my globe from a single axis mount to a Gyro-matic (dual axis) mount. It's no longer convenient to have cord in this configuration, so I'd like to illuminate the globe with an LED light that can be switched on from the bottom base plate. I'd probably have to drill out a hole in the base plate to expose the switch. Any ideas are on lights or installation are much appreciated. Here's a link to the bulb replacement instructions.
Is there a better option than incandescent bulbs for my kitchen? More inside... [more inside]
Please help me find LED lighting options for the bathroom. [more inside]
It's been cold recently (-15C) and I burned out two bulbs in my dutch bike's headlamp in a short time. Since the bulbs are hard to find, I thought this was a good time to replace the bulb with a 1-Watt LED light. What I built works, but I don't quite know why. [more inside]
I've been looking around at lighting options for my bedroom, and my geeky self decided that custom LED strip lighting would be awesome. Then I read previous AskMe's and want to make sure I can do this without burning down my house! Questions and a search for the easy way inside! [more inside]
Does anyone know where one can get instructions on how to make "LED smiles" (or where to buy them)? [more inside]
I'd like to use a single 5mm UV LED (3.4Vf, 20-25mA) to charge a daub of glow-in-the-dark paint. It only needs to be lit around 1 minute of every 10 (or 6 seconds of every 60), and only when the (room) lights are out. What battery/circuit would be most economical to operate, and require the least-frequent battery changes? [more inside]
I need a computer program that can take the text of my novel and scroll it across the laptop screen like one of those LED ticker scrolling signs in Times Square. [more inside]
Best book light? [more inside]
How can I make a clear plastic cast of a bicycle? [more inside]
LED LCD HDTV? I'm looking to finally replace my 1998-vintage CRT with a Samsung 40" LED LCD @120 Hz (model #UN40C6300SF). It's on sale at Best Buy and the reviews have been very positive with a few complaints of bad panels and visible corner "flashlighting" in a dark room. Anyone have experience with LED TVs? I like their sexy slimness, but are they built to last? Should I wait another year for a comparably-priced 3D version?
Circular multi-segment LED displays? Who makes them? [more inside]
music filter: "Boogie with Stu" ... and who else? [more inside]
How to attract the attention of a be-headphoned person in a cube across an aisle facing away from the entrance without touching them? Ideally this would be inexpensive and not require any hardwiring. [more inside]
How do I wire up a bunch of LEDs in my ceiling? [more inside]
Do you have any LED lightbulb recommendations? [more inside]
I want to create a customized Settlers of Catan board. For the purposes of this question, it could also be a custom Monopoly board. I want the pieces ( cities / hotels ) to light up when they are placed on the board. I know I would put LED's in each piece, but besides that, I am not sure if or how I could power up the LED's. I am not an electrical engineer, but magnets, watch batteries or inductive charging sound good to me. Help me make an awesome electronic board game!
Old sun-damaged skin all over my body--is it tilting at windmills to consider light therapy? [more inside]
Table Hockey in the dark? [more inside]
Help me turn a blindingly bright LED tube into a functional and decorative floor lamp! [more inside]
Why are LED signs so often seen broken, at least in part?
Please help me find replacement light bulbs for my gadget. [more inside]
ScotFilter. Or LedZepFilter. Why did Glasgow need it? [more inside]
What is the best auto racing simulation? I currently have no gaming equipment. [more inside]
Your suggestions for lighting the top of a 50 ft. sculpture being displayed at our state fair? [more inside]
Who did the big band version of Black Dog and where can I find it? [more inside]
Any advice, particularly construction/fabrication related, for this lighting oriented site-specific installation?
A couple of friends and I are organising a site-specific installation for the Smart Light Festival (flash w/ sound) to be held in Sydney from May 26 to June 14 this year. While I would appreciate any advice on bringing an installation like this to fruition, I was hoping specifically to get feedback on our plans to pre-fabricate the components (basically if they seem feasible, and if there are cheaper more efficient ways of going about it, how to use less energy, and especially how we could reuse or recycle the materials). [more inside]
I'm looking to buy a projector off a classifieds site but the only issue is it requires a new bulb upon purchase. Besides the obvious problems that could come of this like having no way to proove that it works. I was wondering how difficult it would be to replace the lamp with some High powered LED's. [more inside]
Help me get started with basic electrical engineering! [more inside]
I'd like to hang a small screw-in type grow light (not a giant florescent tube) above my plants to help them out. Possible? [more inside]
Where in Los Angeles (or within an hour's driving distance) can I get a whooooooooooole bunch of LR41 batteries on last-minute notice? [more inside]