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22 posts tagged with LED and resolved. (View popular tags)
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Help me Automate my new apartment/townhome

I am looking for ways to simplify/automate my apartment. Things like automatic lighting, automatic fridge contents lists, everything turning on/playing music when I enter my apartment, and any other household hacks. I don't have android OS. [more inside]
posted by bbqturtle on Mar 18, 2014 - 12 answers

Fun with LEDs

I want to start messing with LEDs; I have two (similar) projects in mind. I want a strip of multi-colored LEDs to respond to music. And second, inspired in part by this thread, I'm interested in learning about turning sound-responsive LEDs into a costume. I imagine those two projects are pretty similar, other than needing a portable power supply for the latter, right? So, can anyone help me figure out what I should get to start with? [more inside]
posted by inigo2 on Oct 28, 2013 - 10 answers

Light me up

Winter has come. Because of my schedule and the late sunrise/early sunset, I find my daily run is happening in the dark morning or dark night. [more inside]
posted by atomicstone on Oct 4, 2013 - 5 answers

Looking for a solar lit acrylic, plastic, whatever sheet

I bought a number address plaque from Etsy and I love it. However, the wall it is mounted to is blue, and consequently it is pretty difficult to read the sign from the street. I'd love to mount something behind it to solve this problem. [more inside]
posted by cacophony on Jul 13, 2013 - 4 answers

When should I buy LED light bulbs?

Dimmable LED light bulbs seem more economical than halogens. But they're really expensive. Will they quickly come down in price, so I should wait? Or will they come down slowly, so I might as well start saving? Also, how good is the dimming? I tried dimmable CFL's, but they don't seem to dim past 50%.
posted by musofire on May 9, 2013 - 13 answers

Why do LED lightbulbs have a bulb?

While changing a bulb in one of our rooms, replacing a LED with a CFL because of a need for brighter lighting in this work area, it suddenly hit me: Why does an LED light have a bulb? In both incandescent and CFLs, the bulbs trap gas (or vacuum as the case may be.) But why an LED? It doesn't use a gas and it doesn't need to operate in a near-vacuum for efficiency. Closer examination showed that the bulb was plastic and had no lensing effect. This question is almost answered here. Because of the question regarding heat sinks (which seem much reduced in modern LED lights, I'm guessing the answer is because they get hot. So I'm guessing that's what it is, though I also think that having a bulb makes it easier to screw into the socket. Taking these points together, I can imagine getting a burn if there was not bulb by brushing up agains an LED stalk that was on until a few seconds ago when you decided to unscrew it. So...have I answered my own question or is there more behind the bulb?
posted by BillW on Jan 29, 2013 - 9 answers

Best Low-Drain, Long-Life Battery

How can I continuously run a 3W - or less - LED light with +/- 350 lumens as long as possible (1 year minimum) with a relatively compact battery source? [more inside]
posted by xod on Nov 14, 2012 - 18 answers

Light up her life: find an LED version of a 40W incandescent

Looking for a LED light that gives an equivalent brightness and spectrum as a 40W incandescent. Can you help me? [more inside]
posted by sciencegeek on Aug 25, 2012 - 9 answers

What LEDs and batteries to buy, and where?

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]
posted by komara on Jan 25, 2012 - 12 answers

Let there be light: need 120V MR16 type LED bulbs for outdoors! Trickier than it sounds.

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]
posted by The Hyacinth Girl on Dec 18, 2011 - 5 answers

I'm feeling a bit LED astray by my wedding lighting options.

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]
posted by RolandOfEld on Dec 17, 2011 - 14 answers

How do I run 20ish LEDs with a LED Driver built to run 1 large LED ?

I want to drive 20ish LEDs, should I run them as series or parallel and why ? [more inside]
posted by 70klicks on Jun 20, 2011 - 8 answers

LED lightbulbs are illuminating but not illuminating.

What is going on in LED lightbulbs? I mean the devices, not the industry. [more inside]
posted by chairface on May 11, 2011 - 9 answers

How to calculate the cost of LED lighting.

How to calculate the cost of LED lighting. Or... renting my apartment, LED lights, energy conservation and fiscal sense. Please help me! [more inside]
posted by gen on May 9, 2011 - 13 answers

The bathroom needs lights. LED lights. Please.

Please help me find LED lighting options for the bathroom. [more inside]
posted by bilabial on Mar 25, 2011 - 7 answers

Custom LED lights without burning down the house

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]
posted by Mister Fabulous on Feb 9, 2011 - 4 answers

I need a way for people to get my attention while I am wearing heaphones.

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]
posted by winna on Aug 19, 2010 - 32 answers

Mood lights FTW

How do I wire up a bunch of LEDs in my ceiling? [more inside]
posted by fvox13 on Jun 2, 2010 - 9 answers

How do I make a light-based alarm?

I want to make an unobtrusive, light-based alarm to help me remember to take my pills. What do I need to do? [more inside]
posted by ocherdraco on Nov 11, 2008 - 7 answers

I want to use my iPhone 3G's headphone jack to power an LED.

How can I use the iPhone 3G's headphone jack to power an LED? [more inside]
posted by buzzbash on Oct 19, 2008 - 8 answers

A Light to Charge By?

How do I light the inside of a box? Cheaply. Efficiently. Blue-LEDly. AC 120ly. [more inside]
posted by notyou on Feb 10, 2008 - 7 answers

Where's my future-car?

It seems that taillights have evolved rather radically from their humble origins, now featuring LED configurations spanning cars' entire back ends. Why hasn't this kind of innovation been seen with headlights? [more inside]
posted by limeonaire on Nov 25, 2006 - 15 answers

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