Are Luxeons Allowed?

Hey, Just a quick question. I think I know the answer, but I'm just checking. Does a Luxeon/Super-Bright LED count as an LED? I've got a kick-butt project idea, but before I go to all the effort, I want to make sure. I'm pretty sure it would be allowed though. Thanks!! Fudge.

Topic by Da_Fudge 9 years ago  |  last reply 9 years ago


SnapLED powerd straight from 18650 or CR123A 3.7Volt battery?

So I don't know if you know about the red-orange SnapLED, but here is the information on it. http://www.philipslumileds.com/products/snapled#datasheets I want to power one of these with a 3.7 volt battery like a 18650 or CR123A. (or the 3Volt options) What is the most simple circuit I can use that will provide long life for my led? This led confuses me because it runs at 150ma (which is right on the boarder of High power leds) You have to treat High power leds usually more carefully than with just resistors. Will just resistors be sufficient for a 150ma led?

Question by SpiffyChee 8 years ago  |  last reply 8 years ago



High power LED brand recommendations?

I have an idea for an Arduino-controlled LED floor lamp and am interested in subjective information about the different brands of high power LEDs--pros and cons, the color and quality of the light, availability of heatsinks, mounting brackets, drivers, durability, price and so on.  Sparkfun sells Luxeon so it's tempting to just go with that, but I don't want to just go with that and find out something else was better.  I don't have a definite design yet just in the daydream stages, I want to be able to dim and brighten, turn individual LEDs on and off, be able to adjust the quality of light from warm to cool, I'm thinking white as a basis plus some RGB LEDs or other color leds to tweak the color, but the white light will do the heavy lifting, probably with some opaque white plastic or glass to mix and diffuse the light from all of the LEDs.  I found a few articles, but they're a few years old, or not exactly relevant (e.g. comparison of flashlights using these LEDs). www.lighthound.com/Fenix-Cree-Luxeon-Rebel-LED-Flashlight-Comparison-Chart_ep_53-1.html www.candlepowerforums.com/vb/showthread.php?221524-cree-vs-luxeon ledflashlights.blogspot.com/2011/06/cree-versus-luxeon.html ledsreview.com/articles/209/

Topic by cdslashetc 6 years ago  |  last reply 6 years ago


Is a driver circuit really necessary for power LEDs?

I have heard that a constant current source or something like that is required to drive power LEDs such as the Luxeon. I want to power several Luxeon Rebels, and I have a 3.7v single cell 900mAh Li-Ion battery. The description I read for the Luxeon Rebel (cool white color) states that it can have a forward voltage anywhere from 3 to 4 volts. Can't I just connect it to the battery then? Or does it have to do with current?

Question by kjjohn 8 years ago  |  last reply 5 years ago


please help! connecting led to a led driver? Answered

  I bought 1w led driver : MR16 1*1W 320~350mA Constant Current Regulated LED Driver (8~40V Input) and put it in the mr16 socket 12vac, and then I measured output voltage - it was about 9volts, so if I want to connect 1w luxeon, I'm afraid it would burn out, what should I do? Would it be possible to put 1 ohm 1w resistor since it's a 1x1wled driver ?  Led calculator says (for 9v input): 18 ohms, 2.2wats. thanks !

Question by xtony666 8 years ago  |  last reply 8 years ago


what are the best superflux leds? .5W leds

I recently discovered superflux leds that run at about 100ma and are .5Watts. I'm going to make a purchase of Red Green and Blue superflux leds soon and I need tips on dealers and what brand makes the brightest. Any help will be GREATLY appreciated

Question by SpiffyChee 8 years ago


Luxeon LED Copy running voltage?

Hey guys, I'm having a bit of trouble.I'm trying to use these baby's for a project I'm doing (you may see it in the Let It glow Contest if I finish it in time) but I don't know what voltage to run them at. I know that they work best at 350mA of current.They appear to be a cheap Luxeon copy, so I guess they would run at the same voltage. But, another problem, I cant find what voltage they run at!!!The one's in paticular i'm wanting to use are the ZD-0500 - Red - hereZD-0502 - Amber - hereZD-0504 - Green - here

Topic by Da_Fudge 10 years ago  |  last reply 10 years ago


Question about Luxeon Star LED

Ok, so I am guessing many of you know about the Luxeon LED's. I have just one question. Where in the world do you connect the wires from the Battery snap and switch to on the star? Where on the picture below do I put the positive and negative leads? Thank you so much in advance. -Brennn10

Topic by Brennn10 12 years ago  |  last reply 10 years ago


Looking for inexpensive source of RGB (Star) Luxeon LEDs.

I have an upcoming project that requires lighting a 10' x 10' matrix of 12" square LED driven lightboxes. The only requirement is the capability to display a broad range of color - hence the need for RGB LEDs. I'd like to go with more of a high-output Luxeon star mounted LED (1 or 3 watt) versus using several standard RGB dome LEDs. I figure that I can get away with using 1 Luxeon instead of 6-8 standard LEDs. My question is... does anyone have a reliable source for purchasing these LEDs inexpensively? I've seen several projects where people are getting 1W white units for around $3, but the Tri-color are selling online for around $14-$16 each. Any ideas?

Topic by upgrade-are-failed 10 years ago  |  last reply 10 years ago


Too much voltage or will the current limit it?

According to the circuit I need about 6 volts input to run a luxeon star LED. As I understand it, the regulator takes about 3v leaving 3v for the LED and will will provide a fixed current of 320ma which is just fine. My question is, can I use a higher input voltage such as 12v without affecting the luxeon star? Although the current output is fixed, will the output voltage rise as the input voltage rises and burn out the LED?Image reference http://led.linear1.org/a-cheap-current-regulated-luxeon-star-driver-design/1/TIARichard:)

Topic by Richard21 11 years ago  |  last reply 10 years ago


Why use luxeon K2 star when you can use Gullwing form for high power led? They're about 1/4 of the price.

I want to build a high power led project which use a lot of LED.  At futureelectronics.com, the gullwing form is 2.50$, while the K2 star is 9.50$.  Specs reveals that the gullwing form is not insulated and should be, but that doesn't seems to be such a hard task, is it?  Also, people with high-power led instructable seem to prefer K2 star. Am I missing something here?

Question by TheGreatAxis 9 years ago  |  last reply 7 years ago


MXDL 3 watt joule thief? Answered

Can anybody make sense of the joule thief inside a MXDL 3 watt luxeon torch? I can post a rough picture of it if needed.

Question by .Unknown. 8 years ago  |  last reply 8 years ago


Wiring your LED

So I just built a new garage and I want to make my own LED lighting for my work bench. I was looking at 1 watt luxeon leds and I was wondering if I need a resistor with those leds? I was looking on ebay and it said that the driver is already installed? I will run these with a PC power supply rated @ 800 watts will this work? Can anyone guide me thru this? Ive been looking on here and reading as much as I can... Thank you.

Topic by BeachKid 9 years ago


Wiring high-power LEDs with a switch and power source?

I'm looking to wire 5 high-powered LEDs to both an on/off switch, as well as a five-way selector switch, to change between LEDs. From doing a little research, I'm guessing that you would wire the switches between the circuits and the power source, but I'm not exactly sure how to do this. I'll be using Luxeon LEDs, along with simple driver circuits I found on here. I'm still confused as to how to power it, and how to wire the switches. Any help?

Question by supermario2100 7 years ago  |  last reply 7 years ago


How Bright is a 112 Lm/W LED? Answered

Hello, I am on a mission to find a very very bright led preferably in red. I have seen lots of bulbs with ranging prices but don't understand how bright they are. One led I have seen is the Luxeon Rebel LXM5-PD01 which comes in red and is 112 Lm/W, I understand that it means 112 lumens per watt but how bright actually is that? And what would be its power consumption? Thanks

Question by Boba Jett 3 years ago  |  last reply 3 years ago


LEDs from ebay? Answered

Is ebay a reliable source of LEDs? I bought a 3 watt LED off there once (http://cgi.ebay.com.au/3-X-POCKET-LUXEON-3-WATT-LED-TORCH-FLASHLIGHT-LIGHT-3W-/320514643442) and it had kinda poor performance...but I don't know whether it was because the torch itself was poor or if the fact that buying it from ebay was what made it bad. Any how, I'm looking for a 1 - 3 watt LED, and a (narrow beam) lens for it, and was wondering where I could get it all for under $10 (AU). WOuld ebay be a reliable choice?

Question by .Unknown. 8 years ago  |  last reply 8 years ago


using 1 watt LEDs with a 4017

I want to build a chaser type light array using a 4017 counter divider circuit, 555 timer and the ever popular 1 watt luxeon LEDs, but I don't think that the 4017, or the 555 can withstand the current that will be going through them. I know in most cases you can simply toss a heatsink on the component and it will be fine, but I don't know if this will work with the ICs. https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId;=10001&catalogId;=10001&productId;=12749Here is the spec sheet for the 4017. Thanks

Topic by John Culbertson 11 years ago  |  last reply 11 years ago


Human Detector

I'm trying to come up with a small, cheap, simple circuit that will detect a human. I plan to use a grid of luxeon rebel OLEDs and whatever detector I come up with embedded in my ceiling to light up only when you are under them. I've looked into passive infrared, but it's fairly expensive for the components I could find. Any leads for circuits, ideas, or parts? I'd use parts from cheap security lights, but they tend to be around $10 each and I would probably need around12-18 ... kinda painful on the pocketbook. Thanks in advance for any help!

Topic by homba 11 years ago  |  last reply 2 years ago


Incandescent to LED torch mod? Answered

All the LEDs I have seem to have not so good throw. (Even my 3 watt luxeon is outmatched in throw by a 1.2-ish watt incandescent  torch), so I was wondering how I coud increase an LED's throw. I noticed that the light from the globe was not very bright, but seeing as how it throws light in all different directions, it probably gave off just as much, if not more, light; probably why the reflector was there. So I figured that if I got a bunch of LEDs, then put them into a torch, pointing them to the side at the reflector, the throw of the light would be greater than if I just pointed the LEDs forward, right?

Question by .Unknown. 8 years ago  |  last reply 8 years ago


LED Reef tank light ( auto dimming)

I am in the process of redesigning a LED reef light using Luxeon III White and Royal Blue. These will let my coral grow the best. The biology of it I have down to a science... My circuitry however is still in its infancy. I have been following several of the instructables but i am at a point where I need some help... I can kind of get to the simple on off in my schematics (given I do not know what my power supply is yet) but as I read in Circuits-for-using-High-Power-LED , I now see that it can be a little more complicated if I want to preserve these slightly costly lights... So that leads to many questions from which most I might be able to get from the 12 books on electronics I purchased and borrowed, but something tells me that experienced people might have more practical solutions for me. What is needed to operate a 24 led array (Luxeon 3, Vf = 3.9V, 1000mA Each LED) from 115VAC to the DC? Now for a topic that I am having trouble with finding information to, back in the day I had an electronic ballast for a metal halide reef light that would fade on to full output over the course of 2 hours and would dim the same when turning off. this ballast had to cords on to supply constant power( i would assume) and the other to control the switch that would allow it to fade on and off.... I would like to simulate this sunrise sunset effect with my LED array? I appreciate your time and help with this project of mine.

Topic by Aquatope 11 years ago  |  last reply 11 years ago


Super Bright Light for Nighttime Video Capture

Introducing the ProdMod Night Vlogger 160!Michael from ProdMod designed a high powered version of his photo light using a Luxeon LED with heatsink - The following project is a neat way to make your own high powered video light to attach to your digital camera or camcorder. I called it the NightVlogger 160 after I read the term on this article of someone willing to use this type of light to allow him to take paparrazi style video at night. At 160 lumen it is very bright and fits in a slim AAA battery holder using only 3 batteries.Make your own or buy the kit.Check out the facts at ProdMod.Then use it to film your Halloween shennanigans and post them here!via: MAKE

Topic by scoochmaroo 10 years ago


Best LED color to mimic incandescent lighting

Dan, Since you seem to be the wizard with LED's around here I figured I would pose this question to you. So I am creating some paper lamps and I'm looking to power them with ultra bright low power LED's, My goal is to make them green laps with the option to use a battery pack with a solar cell. So with that in mind what do you think would be the best selection of LED's for me, I was looking at the Luxeon Star LED's, but was wondering what color I should go with if I want that incandescent look, I was also thinking of creating a single rgb rig to control the color of the lighting for each lamp, your input will help me decide. Thanks in advance, Joshua AM

Topic by JoshuaAM 11 years ago  |  last reply 5 years ago


using a thermoelectric cooler for High powered LEDs

Has anyone tried using a thermoelectric cooler, like this one http://www.allelectronics.com/cgi-bin/category.cgi?item=PJT-7to cool down a high powered LED star. I am considering mounting one on the back of a new Luxeon RebelI plan on ramping the current up to max (1 amp) on the led, and run the Thermoelectric cooler (TEC) as high as possible off a lead-acid battery. Strap a giant heat sink on it (maybe a fan too) plus thermal and silicone over the whole thing. It wouldn't be pretty, but it would be a neat experiment on how many lumens you could crank out of one of these things. Any inputs, suggestions, Ideas? Feel free to make an instructale on this if you want, I can't guarantee I will do it anytime soon.

Topic by John Culbertson 11 years ago  |  last reply 7 years ago


Reefing it with LED's (help needed)

Well this is my second post and I am a bit more learned in the ways of LED circuits from many of your posts. Objective: Create a high light output LED array that will peak at around 16,000K for growing coral for reef aquariums.Primary strategy: connect 10 or more Luxeon III stars in seriesPreferred requirements: Energy efficient, Low Heat emittance, Needs to peak out at the appropriate spectrum for the coral ( I have that covered just by changing the ratio of cool whites to royal blue Luxeon III's)At the moment I a just going for a simple on/off, later i would like to employ a form of automated dimming so that it fades on and off so there is not such a sharp on off with the LED's. So far I have a circuit that i plan on modeling my LED array after since it was readily available for me to dissect. The following is an LED array. I know that there is a diode rectifier bridge built in there and a smoothing capasitor but there are to components i do not recognize they are connected at the positive and negative ends of the circuit. One is the Yellow (doohickey with part # 684j 250) component attached to the positive lead and the other is a clear (fuse/resistor hybrid) component next to the resistor on the board.https://www.instructables.com/files/deriv/FGX/D7E2/FBQ33XYA/FGXD7E2FBQ33XYA.MEDIUM.jpghttps://www.instructables.com/files/deriv/FGX/D7E2/FBQ33XYA/FGXD7E2FBQ33XYA.MEDIUM.jpgI was able to draw the circuit and it seems pretty straight forward but I just need to know if I will be able to spec the appropriate components to operate 10 leds in series (Each LED operates with a Vf=3.9 V and I= 1000mA ) they will need a supply of more then 40V DC.Any help or dialogue I can get the more the better and the more I will learn In addition I looked at Dan's high power constant current but not sure how well it would operate under the conditions that I have specifiedPrimary LED's in use for the Reef light: (note all are stars)LED part # Color Type Vf Amps Lux LXHL-LW3C cool white Lambertian 3.9 1000mA 80lumensLXHL-LR3C Royal blue Lambertian 3.9 1000mA 445mWLumensLXHL-MW1D cool white " " 3.42 350 mA 45 LumensLXHL-MRRD Royal Blue "" "" 3.42 350 mA 220 mWLumensThere was little to no difference between the 700 mA series and the 1000mA series so I did not list themI look forward to all your helpTom

Topic by Aquatope 11 years ago  |  last reply 11 years ago


Reefer meets High Power LEDs (looking for help)

Well this is my second post and I am a bit more learned in the ways of LED circuits from many of your posts.Objective: Create a high light output LED array that will peak at around 16,000K for growing coral for reef aquariums.Primary strategy: connect 10 or more Luxeon III stars in seriesPreferred requirements: Energy efficient, Low Heat emittance, Needs to peak out at the appropriate spectrum for the coral ( I have that covered just by changing the ratio of cool whites to royal blue Luxeon III's)At the moment I a just going for a simple on/off, later i would like to employ a form of automated dimming so that it fades on and off so there is not such a sharp on off with the LED's. So far I have a circuit that i plan on modeling my LED array after since it was readily available for me to dissect. The following is an LED array. I know that there is a diode rectifier bridge built in there and a smoothing capasitor but there are to components i do not recognize they are connected at the positive and negative ends of the circuit. One is the Yellow (doohickey with part # 684j 250) component attached to the positive lead and the other is a clear (fuse/resistor hybrid) component next to the resistor on the board.https://www.instructables.com/files/deriv/FGX/D7E2/FBQ33XYA/FGXD7E2FBQ33XYA.MEDIUM.jpghttps://www.instructables.com/files/deriv/FGX/D7E2/FBQ33XYA/FGXD7E2FBQ33XYA.MEDIUM.jpgI was able to draw the circuit and it seems pretty straight forward but I just need to know if I will be able to spec the appropriate components to operate 10 leds in series (Each LED operates with a Vf=3.9 V and I= 1000mA ) they will need a supply of more then 40V DC.Any help or dialogue I can get the more the better and the more I will learnIn addition I looked at Dan's high power constant current but not sure how well it would operate under the conditions that I have specifiedPrimary LED's in use for the Reef light: (note all are stars)LED part # Color Type Vf Amps LuxLXHL-LW3C cool white Lambertian 3.9 1000mA 80lumensLXHL-LR3C Royal blue Lambertian 3.9 1000mA 445mWLumensLXHL-MW1D cool white " " 3.42 350 mA 45 LumensLXHL-MRRD Royal Blue "" "" 3.42 350 mA 220 mWLumensThere was little to no difference between the 700 mA series and the 1000mA series so I did not list themI look forward to all your helpTom

Topic by Aquatope 11 years ago


LED torch lens?

I have this LED torch, a luxeon 'MXDL' (next to a AA battery in the photo). It's a 3 watt LED torch (supposedly) running on a AAA battery connected to a joule thief of some sort (it has some sort of transistor, a capacitor, and an inductor), but it isn't that bright,( being about the same as a 3 5mm LED torch which has these lenses), but I still like it because of its compact size and light output. Anyhow, its throw is kinda poor, and I was wondering whether I could put a cheap lens onto it (from out of, say a camera's lens) to increase throw. Would it work? How would I go about it? P.S: I found these AAA li-ion batteries online, but I didn't even know that those batteries existed. If I put one of them into my torch, they'd probably increase brightness a lot, but because they are only rated at 300mah, I really doubt if it would be worth buying them. What do you think?

Question by .Unknown. 8 years ago  |  last reply 8 years ago


Ideas for "Consuming" Outdated LEDs

Hello all! I have many of Cheap and Outdated LEDs (In thousands) lying around. These were purchased long time ago (2003~2005) when luxeon Stars were hardly available and costed Rs 1000 a piece. These LEDs are- 5mm 20 deg White ~100pc 4.8mm "Straw Hat" Low dome 100 deg White.~ Many 1)Both of them are rated at 20ma, 3.2 volts. 2) Straw hats are twice as better (Life, brightness, Even-ness) than low beam angle 5mm ones 3)I learnt the hard way using these in many precious projects. Now I know very well that 5mm LEDs dim considerably even at 20ma after a year intermittent use. I had made 36-LED matrixes (about 2 watts) with good spacing between LEDs, Legs uncut still went dim after a year. 4)There is a huge variation in Tint, Voltage and output of these. Straw hats are better , but still 5)These are not entirely Cheap in money per-se. Costed 3 Rs per piece. Today a reasonable spec Chinese 350ma Star costs 40 a piece. If we consider a bunch of 18 of these to make that wattage, They add up to Rs 55 6)Advices to throw them in the bin/ Donating/ smashing with bulldozers./ Overvoltage Fun etc are not my idea. 7)Don't want to spend tremendous time/energy/money than they're worth.

Topic by bhvm 6 years ago  |  last reply 6 years ago


(newsletter) Extract DNA, Build Halo Armor, Make Your Bike Glow...

Nov 13, 2008 Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; } window.open("/newsletter/newslettersignup?email=" + src.value,"newslettersignup1","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); } Welcome back! The SANYO eneloop Battery Powered Contest has launched! Show us your best creation powered by AA, AAA, C, or D batteries and win a full set of eneloop rechargeable batteries!It's getting dark outside, and if you ride a bike that means you need to be seen. So find some way to make yourself more visible, and enter the Light Up Your Ride Contest! We're giving away three pairs of totally sweet Bike to Work Pants from Cordarounds, so enter soon!Coming very soon... an absolutely huge Craftsman Workshop of the Future contest! This will be our biggest contest yet, and any project using tools will be eligible, so start tinkering now! Toy Brick-shaped gummy candies by SFHandyman Build Halo Armor by indymogul Sparky - Web-Based Telepresence Robot by sparkyrust Turkey Recipe by noahw Ride safely and win some cool clothes! Win a sweet set of rechargeable batteries! Extract DNA in a Shot Glass by macowell Recycle an Old Light Bulb by msolek Build an Eve costume from Wall-E by drwave Bike Lite Glow Using CCFL by digitaltripper Make an Iron Man Arc Reactor by Honus Dalek Costume by jambot HDDJ: A hard drive rotary input device by nvillar Bright Luxeon LED Bike Light by kwschofi Some classic Instructables toinspire your next project Vote for your favorite entries! Galvanic skin response mouse by Alex Uyttendaele Build your own Electric Car! by bennelson Create a Book with Mechanical Turk by bpunkt RFID Reader and Tilt-Sensitive RFID Tag by nmarquardt Now go make something awesome, and I'll see you next week! - Eric Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; } window.open("/newsletter/newslettersignup?email=" + src.value,"newslettersignup2","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); }

Topic by fungus amungus 10 years ago