Led light

I'm struggling understanding what im really needing and could use some guidance... I'm tring to build a underwater fishing light that has 36 3watt green leds.  I'm going to only be powering them when the engine is off and the batteries aren't being charges... it will run off a standard 12volt marine battery... the led specs are ' green (510-530nm):DC Forward Voltage:3.4V~3.8V Forward Current: 700mA'.  what would be the best way to power these leds... im assuming that I need to power in series groups of 3. but with such a wide voltage of 3.4 to 3.8... do I just shoot for the middle? do I use 12v in my calculation or do u use like a 12.5 or 13 like it sometimes checks.... Can I get by powering it with just resistors or do I need a led driver? I have entered my data in some of the calculaters online and it says I need a 2.2 resister but gives warnings... and doesn't say what watt resistor... does it matter... first project ... confussed to say the least thanks

Topic by laltec 3 years ago  |  last reply 3 years ago


Led lights

Hello everyone, i have a question and i think people here on instructables are best suited to help me! So i wanted to connect 21 leds together to make a bigger light. I would connect them in parallel and in series (3 in series 7 rows :P) and i thought i would use a 12v 7Ah battery to power this thing. The problem is i also wanted to use an arduino so they would turn on automatically but it can not output 12v. So is it beter to use the arduino to phisiclly controll a switch to turn the leds on or is it possible to power the arduino and then output 5v to the leds. And if it is will they be dimmer? or will the system draw more current killing my battery faster? Thats my problem and i hope someone here can help me. Thank you in advance.

Topic by thecreatorst 8 years ago  |  last reply 7 years ago


led light? Answered

I would like to build a led light that has 5 white, 2 red, and 5 blue leds in it. i would like it to have a 3 way switch but it can have what ever you can work in to it. i am very new at doing this so the instructions would have to be very easy and simple. please try to keep it small and cheap please. thank you

Question by lynx66 7 years ago  |  last reply 7 years ago


led light

Need to know how many amp power supply to get for my 12v 225 red/blue led panel.It has 5 parallel circuits like the picture below  with 15 series circuits  each with 2 red and 1 blue led 12 volt supply with a 5.1 ohm resistor (rough drawing but i think it shows the circuit..leds are faceing the wrong way but ya get the point thanks don't mind the arrows i didn't know how to remove them

Topic by bolonny 5 years ago


LED lights

My name is Cindy,  our company produce LED components and LED lights in many appication. If everybody need such products, don't hesitate to contact with me. International Business Department Lucky Light Electronics (Asia) Co., Ltd Add:6th Industrial Park,Nanlian,Longgang District,Shenzhen, China. P.C: 518116 MSN: leds14@hotmail.com Skype: luckylightled E-mail: led8@luckylight.cn Tel: +86 755 8461 3005 Fax:+86 755 8461 3126 Website: www.luckylightled.com

Topic by cindy2819 8 years ago  |  last reply 8 years ago


LED light

Hello! First of all I want to say hi to everyone as this is my first post! I hope to learn some interesting things from all of you.  On the topic now. I want to make a USB LED night light for my sister. I wanted to make it USB powered with RGB (or whatever they are called. I'm not too familiar whit all this stuff) LEDs that you can control in computer. Is something like that possible without expensive controllers and what not? Every answer will be appreciated.  Thank you!

Topic by slaps123 5 years ago  |  last reply 5 years ago


LEDS

I am wondering if you run a led at full voltage and amps then as you add more resistance light output goes down here is my question 1 led at 20ma or 2 led at 10ma do not 2 leds give more light than 1. Like is light output a linear taper to amount of current applied or is it more of an audio taper?

Topic by John1397 5 years ago  |  last reply 5 years ago


LED's

LED throwies are so populear that this happend. i serched for LED on google. Light-emitting diode - Wikipedia, the free encyclopediaA light-emitting diode (LED) /ɛl.i.ˈdiː/ [1] is a semiconductor diode that emits incoherent narrow-spectrum light when electrically biased in the forward ... en.wikipedia.org/wiki/Light-emitting_diode - 153k - Cached - Similar pages - Note this Howstuffworks "How Light Emitting Diodes Work"Light emitting diodes form the numbers on digital clocks, send data from remote controls and light up traffic signals. Find out how LEDs work. electronics.howstuffworks.com/led.htm - 62k - Cached - Similar pages - Note this SUPER BRIGHT LEDS homeOffer LED products and components including replacement bulbs and circuit boards. Includes detailed specifications and wholesale information. www.superbrightleds.com/ - 4k - Cached - Similar pages - Note this TheLEDLight.com is everything LED. Find loose LEDs, LED controls ...TheLEDLight.Com stocks a variety of low voltage (12vdc or 24vdc) LED lighting products such as under cabinet lighting, LED bulbs, LED fixtures, ... www.theledlight.com/ - 40k - Cached - Similar pages - Note this LED Circuitry tutorial: how to hook up LEDs.LED Circuitry tutorial: how to hook up LEDs. Text and illustrated instructions for setting up a circuit, what is series and parallel circuits, ... www.theledlight.com/ledcircuits.html - 15k - Cached - Similar pages - Note this LEDs Magazine - LED Technology, Solid State Lighting and other LED ...LEDs Magazine - LED Technology, Solid State Lighting and other LED Applications. www.ledsmagazine.com/ - 31k - Cached - Similar pages - Note this What is a Light Emitting Diode?What is a Light Emitting Diode Fundamentals of Physical Science Experiments by Experimentation ACEPT. acept.asu.edu/courses/phs110/expmts/exp13a.html - 8k - Cached - Similar pages - Note this LED Throwies - Instructables - DIY, How To, art, techDeveloped by the Graffiti Research Lab a division of the Eyebeam R&D OpenLab, LED Throwies are an inexpensive way to add color to any ferromagneti... www.instructables.com/id/LED-Throwies/ - 178k - Cached - Similar pages - Note this

Topic by dsman195276 11 years ago  |  last reply 11 years ago


LEDs

Im trying to make a singe row 18 LED circuit, i used 18 random resistors that i salvaged from things (one for every led), i connected that to a 12v battery and only 4 light up, (1 out of the 4 are dim, the other 3 are good) what do i do to make all 18 light up. (the LEDs are blueish)?

Topic by Emomo 3 years ago  |  last reply 3 years ago


leds

Would like to wire dollhouse with led lights, going from 120v down to 12v,also be able to turn each room on and off.

Question by richard dodds 8 years ago  |  last reply 5 years ago


Bicycle LEDs

Hi Everybody, I have made a series of LED lights on my bicycle spokes, for driving at night. I use a 9 volt battery with 9 pieces of white LED 3.3 volts, which I connect each with a 330 ohm resistor 9 pieces 1/4 watt. its durability is approximately 30 hours later the lights dimmed, is there any way to be more durable ?

Question by pro5200 7 years ago  |  last reply 7 years ago


Leds

New to site not sure this were to post this. Led's for ac powered model railroading, to replace incandescent bulbs.  Voltage to track varies from 5 to 17 volts AC.  Leds will light up, but what is it doing to them. They do not pop like a flash bulb at top voltage. I've rectified some to dc voltage for lights in cars, the variable voltage seems to power them. Ideally a circuit that put out a constant 3.2 DC volts, with a variable 5 to 17 volt AC input.  Or maybe would a constant 3.2 volt AC out would function? I found that with HO DCC control, a white led with a 1k resistor will function, have not ran them for more than few hours though. Prewired rectified leds go for around $3.00  each, 5 passenger cars, 2 bulbs each, gets pricey with 4 sets of cars. Surly someone has gone through this.

Topic by 31cssinc 5 years ago  |  last reply 4 years ago


Led Christmas Lights

I have an idea but have no idea if it would even work. I would like to make a led string that can be two different colors. The idea is that I put the lights up in October and they are purple and orange for Halloween and then as Christmas approaches I can change them to green and white. That way I can put lights up one time and do it when it is still warm out and my neighbors wont think I'm nuts. I know I can weave two lines together and just switch plugs but that isn't complicated enough. I like to do things that are way more complicated than it needs to be but are really cool when they are done. my wife loves it.

Topic by brianv512 9 years ago  |  last reply 9 years ago


LED wall lighting?

I want to create a long wire tht i can just pin onto my wall with LEDs along that piece of wire. and just plug it directly into my wall but i have NO idea how to do implement this idea. im a comp sci student and i know nothing about electricity, helpppp

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


LED Christmas Lights?

I'm a freshman in college right now and I really want to spruce up my suite and room a little for Christmas. So Christmas lights would come to mind to display at my suite's door, but because of fire hazard rules/laws we can't have extension cords. I think I also read that we can't have Christmas lights period. So I started thinking I could make something out of LED lights to attach to our door so people walking by can see. I was thinking maybe an outline of a Christmas tree made of green LEDs would be cool or putting LEDs inside a wreath to light it up. Which would be the best way for me to power all of the LEDs? I've never worked with LEDs before, so this would be new to me but I really want to put something together. I basically want to chain a bunch of LEDs together, power them with batteries, and have the ability to turn them on at night and off in the morning. So, any ideas would help a lot. Maybe a point in direction.

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


LED accent lighting

I want to add LED accent lighting to the mirrors in my bathroom renovation. I installed receptacles behind each mirror Can I power a short LED light strip with a USB charging block plugged into a 120v receptacle?

Question by MONROEJOE 1 year ago  |  last reply 1 year ago


LED street lighting

Hi guys,  I'm thinking about making some LED street lights. Is this a feasible idea? Can anybody do an instructable on this topic please. 

Topic by Jeevendra 8 years ago  |  last reply 8 years ago


Led Spreader Lights

I have a sailboat and would like to see Led spreader light to light up the deack. But would like to see a set that could be also red  or white deck lights controlled with just one swith.

Topic by drcov 5 years ago  |  last reply 5 years ago


LED's for puck lights

Hi. I purchased some leds for my puck lights but when I install all 3 they just flash but won't stay on. If I leave 1 standard bulb in with 2 leds then the arrangement works. Does any one know what is going on and is there a fix for it such as a resistor [ which I don't have alot of knowledge on] please help. Thanks in advance

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


LED Strobe light

Can any members please help me guide or create this circuit??? which IC should i use to create this strobe light effect???? click the link to see what im taling about. http://www.youtube.com/watch?v=a9AgwCkCfUw

Topic by ShaZyla 8 years ago  |  last reply 8 years ago


Spread LED light?

I'm having trouble using an LED to light up a vase. I have frosted a vase and was hoping to get a blue led to light it up from putting it in the bottom of the vase and give it a sort of blue glow, however, it is just not working. I can still see a big concentration of light where the LED is and towards the top of a small vase (maybe 8 inches?), there isn't much light. Is there a particular LED feature I should be looking at? Certain type? Certain voltage? etc? I was hoping the sunjar tutorial would shed some light (no pun intended) but it really didn't help much for my project. I was trying to get an effect similar to:http://www.westcoastmall.net/images/GS68.jpg or maybe http://www.vibride.com/images/photoalbum/38/ostrichfeather.jpgany ideas?

Topic by ejkeebler 11 years ago  |  last reply 6 years ago


LED lighting help?!

I am in the process of building a jewelry armoire / box / chest (whatever you wish to call it) and I am wanting to add just two LED's that will come on when the door is opened on the jewelry box and they will go off when the door is closed. Having novice skills in electronics and handyman skills in woodworking I was wondering what I would need to accomplish this and if it could be battery powered...

Topic by bigbadjohn81 11 years ago  |  last reply 6 years ago


Wireless LED light?

I would like to make an LED light that can be controlled by some form of wireless on/off switch. I cannot use IR as the switch will be in a different room to the light. I think I could use the Imp board I have seen on here but that seems expensive as I think I would need 2 Arduinos, 2 Imp shields and 2 Imps. Maybe I could use Bluetooth, Xbee or RF? Any thoughts? Cheers. Phil

Question by filthyPhil 6 years ago  |  last reply 6 years ago


LED light help?

I purchased an LED anti-aging mask called Illumask. You only get thirty uses and then you need to repurchase. The manufacturer states "After 30 doses, the mask’s LED lights lose a significant level of luminous intensity (irradiance) which results in it being less effective.  Longer lasting lights would drive up the cost, preventing us from keeping the price at $1/dose." They're kind of alluding to the loss of intensity being due to the lights themselves having a short lifespan? At least that's what I get from their statement. However, online a user posted that "The manufacturer deliberately drains the four AA batteries after the initial 30 sessions to thwart users from just RESETTING" (the device) I don't know enough about LED's to know which is more likely the scenario. I didn't think the lifespan of LED's was so short that they'd be losing intensity after only 30 uses of 15 minutes? Or is it likely a battery drain issue? If the battery drain issue is more likely, how do I circumvent that? I'd also like to mod the mask to add more lights to it as I don't think there are enough lights to make it effective. Any help in how to go about that would be greatly appreciated. I was thinking LED ribbon lights would probably be easiest. I'm not sure if I could add more of the same type pictured or if I'd have to go with the larger ones. In any event, I need to figure out what's the more likely culprit in the loss of power. There are instructions on the web on how to reset the device, but if the lifespan of the light is an issue, I don't want to buy the same kind to mod it. Any help would be greatly appreciated.

Topic by lorraineg57 4 years ago  |  last reply 3 years ago


Lighting with RGB LEDs

Hi all. I am wanting to get into using led lighting for long exposure photos (for the purpose of thermal imaging) and I am looking at RGB LEDs for providing the colour. My question being, should I try finding LEDs that have similar light output in mcd or stick with RGB LEDs? The reason I am asking is when I am looking at specs, the green seems to be 2 to 4 times as bright. Is this an issue?  Also, the RGB LEDs seem to have a much wider viewing/ lighting angle.  I am not sure where to go from here. Any help would be appreciated.  Thank you all very much for the time.  Professorred

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


LED that lights on music

Hello there guys, I want to make an LED that lights on music. I know how to do it, I've seen some other instructables and i've understood how it works. My question here to you guys, instead of the TIP31 transistor, can i use something else because i don't have a 12V power supply, i only have a 5V one. Can you guys provide me with an answer, a tip, schematic or anything else that could help me? Thx alot, John.

Question by Shetsans 3 years ago  |  last reply 3 years ago


LED that lights on music

Hello there guys, I want to make an LED that lights on music. I know how to do it, I've seen some other instructables and i've understood how it works. My question here to you guys, instead of the TIP31 transistor, can i use something else because i don't have a 12V power supply, i only have a 5V one. Can you guys provide me with an answer, a tip, schematic or anything else that could help me? Thx alot, John.

Question by Shetsans 3 years ago  |  last reply 3 years ago


Led strobe light?

Hello everyone, I came across a video on youtube where I found a light on a truck but don't know what it is called maybe strobe but I am not sure about this.  My ideas would be to use an IC 555 or use arduino to control the lights to achieve the same effects that the light is on the top of the red truck cabin. Here is the link for the video. https://www.youtube.com/watch?v=ujbOLHGrqXs Start at 11:41 till 11:55 and you will see the light on top of the red truck. Thanks all

Question by Chamburn 2 years ago  |  last reply 2 years ago


Efficient LED lighting? Answered

I want to power 3x 0.5W LEDs in series with 3x AA Ni-Mh batteries (input voltage will range from 2.5 to- 3.7 ). The total forward voltage is around 10volts, and the current of the LEDs is 150mA. I've tried using a Joule thief but it's quite inefficient, even with different transistor / toroid / resistor configurations (even with fast switching Darlington transistors) the maximum current I've been able to get at the LEDs is less than 100mA, and many energy gets lost in the process, it seems the resistor between the coil and the base of the transistor slows down the switching process and limits the current. I need a more efficient way to power the LED's, either an improved design or a LED driver chip. But trying to keep the efficiency rate around 60-70% or more. I have found a design that claims to be more efficient (see picture), but I'm not sure about if it will deliver 150mA.

Question by Victor805 4 years ago  |  last reply 4 years ago


Led light & switch

Hi, I've purchased a wooden toy kitchen, for my daughter. I want to add a couple of special effects to it, for realism. There's one part I don't know exactly how to do and I don't know the correct terminology for the parts I need. So any advice would be greatly appreciated. basically, the pretend oven part of the kitchen, I'd like to add a push to make, illuminated switch to the panel that houses the pretend dials. I want this switch to be connected to a battery, hidden inside the play oven & upon pressing it, not only does the switch itself light up, it powers some red led lights. This is so when my daughter presses the button, it'll light up red inside, to give the impression it's hot, the oven has a Perspex panel, so the red light will be noticeable. I'm unsure how many led lights I'd need, it's probably 1 cubic foot in volume & doesn't need to be overly bright. So what type of push button switch, what types of LED & how many, what batteries and what other components would I need?   Sorry for the lack of knowledge & thanks for any advice.

Topic by dlee60 5 years ago  |  last reply 5 years ago


LED Tea light

I am new to this, so I hope this comes across clear. My wife keeps buying holiday decorations that have to have tealight candles burning in them, but is scared to leave a candle on in the house. While i was at the local craft store i saw the typical LED tea lights, but i would like to make my own using red LED's. I would like to make it a little more complex by adding a sensor so it turns on when it is dark.To take it one step further i would like to have some of the more permanent ones to recharge via a small solar panel, like this:http://www.bgmicro.com/index.asp?PageAction=VIEWPROD&ProdID;=12269I have all the tools i need (solder pen, solder, heat shrink tubing, heat gun, ect) I just do not know to start.

Topic by Mournbringer 9 years ago


LED Suit of light

Hi, I am looking to build a fancy dress costume, and have approximately 12 months to make my costume :) What I would like to build is a replica of the following (or something similar): http://www.gizmodo.com.au/2012/02/night-snowboarding-in-an-led-suit-is-mesmerising-to-watch/ I have searched for flexible fabric with woven LEDs, i have also searched several suppliers on Alibaba for flexible led mesh screens but nothing seems to be quite suitable. I think, for this, i would maybe be best off building the suit from strips of waterproof 5050 SMDs like this: http://www.alibaba.com/product-gs/615439688/business_agent_smd_505_led_strip.html Power would be in the form of the biggest 12V power supply I can find. The only problem here is that at full brightness, the suit is going to consume A LOT of juice... I have seen this costume which is similar in construction, except all the LEDs twinkle (like TV static): www.youtube.com%2Fwatch%3Fv%3DLal9uma1iVc&ei;=nwgtUNT7B6_Z0QXekYGwDA&usg;=AFQjCNENmYUCu_AwYaEAwqAiWSDFRFnUeg&sig2;=FXRYO81ccZavpYyeBsZMyQ This has the added advantage of lower power draw as not all of the LEDs will be on at the same time. I actually much prefer this concept, however I have absolutely no idea where to begin on schematics... Any insights or friendly advice from the experts would be handy, I have a rudimentary knowledge of electronics, and am very handy with soldering. Thanks!

Topic by Zander83 6 years ago  |  last reply 6 years ago


Controlling LED lights

Help, I am trying to find out if it is possible to control a string of LED lights so that when i enter a part number only certain lights will turn on. (example: If I enter 1234 into the computer, lights 5, 10, 15, 20, 30 will light up out of a string of 100). 

Topic by tuanman 7 years ago  |  last reply 7 years ago


LEd light show

Is there any way to synchronize your computer LED lights with an equalizer to make it do a light show? based on bass and treble. thanks for all ther help you can provide.

Topic by Yomster 12 years ago


LED Light Box

Normally, a light box uses fluorescent lamps (e.g. 36 watts Philips Lamp) and electronic ballasts to emit light. However, it consumes too much electricty and the life of lamps is short. Therefore, I would like to replace fluorescent lamps with LEDs.

Question by richardkartono 10 years ago  |  last reply 7 years ago


LED Lights and Music

To get a general idea of what's going on, I'm a CAD student and we are studying Electricity -- I was looking at a recent instructables guide that showed how to make a box that lights up to music. Well I was planning on doing something similar with a few twists. 1) Dependant on the frequency, there are certain LEDs that will light up 2) The ability to plug in a MP3 Player (Zune is my test subject) 3) The addition of two (2) small speakers around the size of maybe 2 inches My questions pertain to what exactly will I need to do here and where I can find information on the parts required for this project. By all means please try and refrain from giving me specific parts (If it requires a Transistor with some requirements [If a transistors do have any differences] please just say Transistor with x requirements). I don't mean to sound rude but I really want to try and figure things out on my own, but I'm not sure where to really look. I would grab bits and pieces off of these Instructables (Which are all very nice) but I want to actually know why to use a Transistor by reading up on it. If anyone can also mention to me a good place for speakers of smaller size I would appreciate that as well. Assuming I'll have problems with connecting certain things like a plug for a Zune -- if you are willing to lend your help please just mention it as a response. Thank you all a head of time!

Topic by Protomega 8 years ago  |  last reply 8 years ago


LED LIGHT STRIPS

Hi ordered LED light strips (16 foot ) we cut them to fit the back of out tv we cut in correct area now the lights won't change color or turn off ...and when they do we can chang ro like one two 3 colors the it stops

Question by Mrsmonrow12 1 year ago  |  last reply 1 year ago


LED Light for videography

How would one go abobut making a light panel for videography lighting? There's a company already making these - but prices are unaffordable. An instructable for a 1x1ft panel would be awesome! (See: http://www.s131567196.onlinehome.us/) - or google lite panels.I love Dan's RGB light! Would be great for lighting backdrops!

Topic by jkd 12 years ago  |  last reply 8 years ago


uv led light?

Has anyone tried to use uv led,s in place of high priced uv tubes [high price and short life] to sterilize water if so how many and what power would be needed

Question by afpuli 10 years ago  |  last reply 8 years ago


LED xmas lights

If i wired 15 leds in a parallel and powered them with a 3.5 volt power supply, at 300 mA Would that be ok without a resistor? because right now i have about 8 in a parallel powered by 3 triple A's (i know its a little to high for the leds) and they will stay on for about 1 hour before the battery goes weak. thnx alot everyone!

Topic by mu0p 12 years ago


Led Nighttime Light

I wanted to make a red LED flashlight, but wanted to run it with a 9v battery. What resistor would I need? I don't have alot of knowledge about resistors, so what size and color resistor would I need? I'm using a 10mm red LED, with a max forward voltage of 5v, max forward current of 40mA and a 5000mcd intensity.

Topic by John Smith 12 years ago  |  last reply 12 years ago


LED Grow Lights

The Rundown... Ok, well, I was looking into writing an instructable (assuming that I can assemble it myself) on how to make your own LED grow light. I've got a few hours of research in to it and I was trying to figure out the most cost effective to way to build my own... ( I know it's normal to spend $300 on a grow light but I just can't justify it. :-/ ) Does anyone out there have any experience with different wavelengths or can anyone recommend locations/LEDs to buy? The little bit of information that I have as of right now is all single source so anyone with a bit of experience would be a lot of help. Thanks!

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


led light art

These are some of the pictures I took when inspired by the light wand Instructable. i used long exposur photography on my little PowerShot A570 IS camera. I'd love to see what some other people have done too. Tell me what you think and show me some of yours as well.

Topic by flamethrower1010 9 years ago  |  last reply 9 years ago


LED Grow Lights

I've been an avid rosarian for many years, and am finally getting around to trying to grow miniatures indoors. I've been looking at some of the commercially available LED grow-lights, and they're insanely expensive, not to mention bulky and unattractive. It occurred to me that a lot of the info here would be highly relevant to such a DIY project. What I'm wondering is how many LEDs would be needed to produce around 2000 lumens in an approximately 1-foot square for one rose? I'd gladly listen attentively to anyone who can comment on this with some degree of authority.

Topic by Cavallo 12 years ago  |  last reply 3 years ago


running light? Answered

I want to make a simple running/chasing light with a pic16f84a i need the code and the circuit

Question by robot1398 7 years ago  |  last reply 7 years ago


Rc light ,flashing light

Ive tried and tried to get an LED to light up (on at all times) then add a flashing circuit on same led like a car turn signal. Any help would be greatly appreaciated

Topic by jbrownskunk 2 years ago  |  last reply 2 years ago


Reactive Lighting

Has anyone seen the LED lighting in some grocery store freezers that comes on only when you stand near it? I'm wondering if anyone knows of a circuit I could build that i could line my hallways with LEDs and have them come on as I walk down the hall?

Topic by tfrost1980 7 years ago  |  last reply 7 years ago


leds.strip lights?

22 inch long strip surrounding an exhaust tip.want  an led every inch.my main prob is i dont know how physically big is an led.5 mm?3mm?dime? pencil eraser?that odd looking mole on my....,well you know. how big are the darn things?also,do i put a resistor every 2 or 3 bulbs according to volts and ohms and such or one really badass resistor at the begining.next ,the resistor drops voltage for the following leds in line.if the led in front is getting proper watts or voltage,then the one after that is getting less and so on,isnt it?i dont know help? 

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


Diffused LED

Hello, I am working on a lighting project. Right now I have a typical yellow LED (like so http://www.sparkfun.com/products/532) mounted in a 5" tube. It is shining through a frosted acrylic sheet at the end of the tube, 2" away from the LED. it creates a circle of intense light on the acrylic that is about 3" in diameter and then some ambient light around it. Are there any LEDs that are designed to diffuse light more so that the circle of intense light would widen and be a bit less bright? Thanks, Ben

Topic by BHSilverman 8 years ago  |  last reply 8 years ago


Solar LED project

OK so I am new to this but I have an idea I want to take the solar panels off some of those garden lights and charge a small battery pack (AAs or 9 volt) to run a bank of white LEDs to use as lights in some basement rooms. Can anyone help? I am very new to circuits and think I have a good idea but don't know how to do it.

Topic by MBIOS05 10 years ago  |  last reply 10 years ago