Blue led photography...

I just took some new pictures for my BraceLED 2.0 I'ble. And look at the picture of the bracelet with the blue LED's! The reflection of the blue light on the white surface (=paper sheet) is highly overexposed! How does this happen? Is the cmos sensor in my Nikon D300s over-sensitive to this color of blue? A picture of a red-led-bracelet under (almost) the same conditions has no such effect. Picture red BraceLED: iso800, 35 mm prime, f/4, 1/20 Picture blue BraceLED: iso800, 35 mm prime lens, 1/15

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


Blue LED ciruit

I am attempting to make this device pictured here. I am looking for someone with a knowledge of LED circuits to help me develop the board used to power the 6 flashing blue LEDs which, when first switched on has LED number 1 lit, then when a non-locking button is pushed the 2nd LED lights and flashes with the first still lit and flashing, and so on until all 6 LEDs are lit. When finally the non-locking switch is pushed all 6 LEDs are switched off? Is this possible. I'm new here and would appreciate any help you could offer. Thank you

Topic by anachronistic_protagonist 12 years ago  |  last reply 12 years ago


Fairchild LEDs?

Can someone show me where I can buy Fairchild LEDs? Preferably the 5mm kind. I know they are not cheap. I want 100 or less if possible. The Fairchild website is a bit confusing for me, and I have to buy in big bulks.

Question by vitruvian8807 10 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


Whereto buy LEDs? Answered

Sure, radioshack has them(i actually just bought some) but they're expensive, even if you get the 20-pack. Anyone know about a good electronics store? I need blue and white leds, alond with other components.

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


LED circuit?

I recently purchased a few LEDs for a project, 2 blues and four reds. I need a way to power them all for months at a time. Would a nice soul be kind enough to draw up a schematic for me, considering I know NOTHING about this stuff? Here are the schematics, taken right off the back of the packets. 4 Red LEDs: Forward Current: 28mA max Forward Voltage 2.6 V max 2 Blue LEDs Forward (supply) Voltage: 3.7 typical, 4.5 Max Forward (supply) current: 20mA typical, 30mA max Any help?

Question by Rotten194 9 years ago  |  last reply 7 years ago


LED question

I just bought some LED's that i plan to run through a wire on a 9 volt with a push button on/off i plan to run 6 at a time. the green are 525nm 8000mcd and the blue (A SEPARATE SET) are 472nm 2500mcd

Topic by pbpenguin5 10 years ago  |  last reply 7 years ago


Super Bright Blue LED Driver Answered

I was about to start a project when I got stumped. I need advice on what driver circuit would be best to drive 10-20 super bright blue LEDs off of batteries. Thanks for the help. P.S. If you need me to specify anything (which you probably will) just ask :)

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


rgb led

Red green blue common cathode light emitting diodes anybody know any cool projects with them? The best ones I found were the hypno cubes and pov's, and some displays were cool. any others? I want to know before I buy a bunch of leds to save on shipping.

Topic by guyfrom7up 11 years ago  |  last reply 11 years ago


LED Belt

Would 4x AA batteries, light up 9 LED's in Parallel?(With a resistor of course) The LED's are 3 volt. I am making an LED belt for my Friend. I wired it up and only the red LED's lit up for some reason.( The colors used are red, green, and 1 blue) is there a problem in amperage or is there a short or something?

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


Temperature and LEDs

Is there a way to control a group of LEDs or even an RGB LED with some sort of temperature sensor/thermometer? I'm new to electronics and wanted to know if you could have a Red LED glow when something relatively hot/warm was near and have a Blue LED glow when something relatively cold/cool was near by. I'm new to electronics and was just curious

Topic by smkoberg 10 years ago  |  last reply 10 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


Flashing LED?

I recently took apart a flashlight, which features flashing LED's. They only have 2 leads each. One flashes on and off, and the other blue and red. I can see a small black dot inside them, is this some type of transistor? I am also wondering if there is a way to get a bi-color (3 leads) LED to flash using a transistor. What kind would i nedd, and how would i nedd to hook it up? ( diagram appreciated)

Question by XOIIO 9 years ago  |  last reply 9 years ago


LED burnout

I've been having trouble with LEDs. I'm running 18 blue ultrabright in parallel. The specs for volts and amperage are as follows: 3.6v typ 4.5v max 20ma typ 30ma max Each LED has a 220 ohm resistor which was calculated for a 9v source with each LED at 4v, 25ma. This seems well within their range. But, in about a year and a half's time, I've had about 25% burnout. Most of the others are showing signs of intensity and spectrum degradation. Any thoughts as to the cause of this?

Topic by hexedene 11 years ago  |  last reply 9 years ago


LED project

Here is what I got going; I want to use a 9v battery to power a led for a project on one of my guitars. I'm not sure what kind of resistor I would need. On hand I have a 33ohm and 1m resistors. The led is a 5mm cylinder with an inward cone on top. The led ranges from red, blue, yellow, and green in different patterns. It came from a light up snow flake and the original power source are 3 LR44 button batteries. I'm not sure what rating the led is, since I didn't see anything on the packaging. The schematic is just the same as the original setup minus the 9v(LR44s) and the switch(little slider). Thanks in advance for the help!

Topic by The Guitar 9 years ago  |  last reply 9 years ago


Bunch of LEDs

So I got those led laying arround for a while now. I bought it for another project that I never started and don't interest me anymore. So I'm looking for a nice project idea to use it. I'd like to do something big and bright. I'm looking for good idea. My first one was a kind of frame with a semi transparent glass and front of it so we wouldnt see the component but still see the light. But my skill are more woodworking/woodturning/resin casting and pretty basic electronic I can solder pretty great (I think...) but i'd need a good instructables to guide me. I got: 900ish big white 50ish small white 500ish small blue 100 big red

Topic by Lufkum 1 year ago  |  last reply 1 year ago


Altoids Blue Headlamp Help

So I just put a bright LED with a switch and reflectors for the LED on an Altoids tin. I was just wondering, how would I make this into a headlamp, or a bikelamp. Any idea of what I would need to fit it over my head or bike? THanks a lot. So, I really do not know how to do this. I am going to go to the hardware store this weekend and try to find any adaptor that would work for my project. I need your help everyone! Thanks : ) -Brennn10

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


Is 6000 mcd to bright for a blue led cube?

 Im making my own Arduino based led cube, and was wondering if 6000 mcd is to bright for this project.

Question by Jehrets2 9 years ago  |  last reply 9 years ago


Questions about led

Hi! 1 :trying to find out if there are any  problem (caused by the red leds lower forward voltage) or not to drive blue and red leds with the same driver when connected in series.  2: if you drive  blue or  red led with lower capacity than rated (ex 2w instead of 3w) could that affect the wavelength for resp color could a red 660nm become a 630nm? the questions concern a growth lightsource thanks  

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


Led strip section not working?

I got a Led strip and a section of it doesnt light up blue but it lights up green and red. Also any variant that requires blue for a colour shows as that variant, EG Cyan on the one half but green on the side that does not show blue and another example, Purple on the one half but red on the side that doesnt show blue. HELP!

Question by TallinW 2 years ago  |  last reply 1 year ago


lights, blue lighting? help?

Hey, i need help with lighting for a shed, but its a place to hang out so not just regular lighting, like some blue lights or something, no usb or anything around, so should i use a computer power supply? i want LED's or something similar

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


Why do yellow (amber) & lime green LEDs suck?

In my experience, I have dealt with many colors of LEDs, and from what it seems, red, neon green, and blue LEDs tend to be pretty good at producing light as well as surviving abuse. They also tend to require the least amount of current. However, I have found that almost all the the classic lime green and yellow LEDs are very different, and generally don't give much light output even with significant amounts of current! I have a couple of ultra bright red and blue LEDs at the moment that will glow bright enough to see them easily only a 100 microamps! That is something I simply cannot do with any of the yellow or green LEDs I've ever had! A bit of research shows that GaN and InGaN is commonly used for the blue and neon green LEDs, while GaAsP, AlGaInP, and GaP are typically used for the old-school red, amber, and lime green LEDs. I imagine brighter and more rugged yellow LEDs must exist, given their use in stop lights and road signs. Do they in fact exist? Or is our yellow LED technology still stuck in the 1980s due to little interest in them and little to no R&D;? The reason I ask is because I want to build a light source utilizing amber and blue LEDs to mimic white light, and I'm purposely trying to select colors which will give a white light w/ extremely low CRI. However I want yellow LEDs that are a closer match to blue LEDs in terms of intensity, and preferably, efficiency. I did some small scale experiments with some unknown LEDs salvaged from christmas lights, and I am impressed how poorly this light renders colors! (and how quickly my 15 ohm resistor went up in smoke driving all the yellow LEDs I had to use to equal the light from a couple of blue LEDs!) although the light hitting white paper appears purplish white, colored objects seem ghostly and take on either a deep blue, muddy grey, or yellow. Perfect for maybe a haunted house ambient lighting! Add a 50Hz capacitive driver to get some good flicker and presto, worst light quality EVER! :D

Question by -max- 2 years ago  |  last reply 2 years ago


Led driver help.

I want to make a aquarium light unit with 100 cool white 14000k 3w ,DC Forward Voltage 3.4-3.6V ,Forward Current 700mA and 100 Royal Blue DC Forward Voltage: 3.6V - 4.0V  ,Forward Current: 700mA  i want 2 dimmers 1 for whites 1 for the blues, can someone please tell me what divers i need  and how many i need. if imposable links to the driver on ebay.

Question by awilloughby3 6 years ago  |  last reply 6 years ago


Surface Mount LEDs

I need almost 200 SMLEDs for a project. However, I only want 6 colors of 36 each. If anyone wants to buy the extra 300, or something like that, please make an offer. I will get 6 from this list, but I need them all to look different enough: White Red Orange Yellow Lime Green Green Blue Green Blue UV Or, if anyone knows a place where I can buy them in small quantities, please let me know :-)

Topic by zachninme 12 years ago  |  last reply 12 years ago


Led fading aquarium? Answered

Hello, I have a fish tank, and it has a TL light above it. I made blue Led's above the fishtank. My idea was: - You get like from 8 AM. - 8 PM. the TL ligth (or some led's i have to make) - From 8PM-10PM the blue Led's - And then it all shuts off. - And then the cycle goes aroud. But the thing is, the TL is 220V and the leds are powered by a 8V AC powersupply, I made a diode bridge, so it all works, But my TL ligth will just shut off, becose it has a timer on it, And i have to turn on/off the blue leds myself. So, does anyone have an idea how to do this? maby some extra white led's so i can power it from 1 cicuit? Greetings. Ingmar (Im from Holland, don't mind my shitty english)

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


How much power can these LEDs handle?

I'm working on a project and I would like to connect two green LEDs two ultra bright Red LEDs and 2 blue LEDs. I got the green leds from radio shack so i know they need 2.1v dc, 25ma but the red ones and blue ones I got from some old toys so I don't know what they need. Any Ideas how much power I would need if I connected them in series? I have a bunch of old wall warts of varying sizes (9v 350ma, 9v 210ma, 5v 1a, 12v 750ma 12v 150ma) but only a few LEDs so I don't want to fry them and I don't need to push them to the limts. Here's some pics of my LEDs the small one is the blue one and the other clear one is Red.

Topic by cannedham160 10 years ago  |  last reply 10 years ago


Problem with Led circuit, What's wrong?

I have 12 blue leds wired in parallel in 2 groups of 6, one of the groups work just fine while the 2nd won't light up at all. Using a 5 volt power source when I tested the 2nd group with a volt meter only .5 volts was going through the circuit. I tested each led individually and none of them will light with the same result of .5 volts. I'm out of ideas and have no clue what's wrong with it. Seeing as how both groups are wired up the exact same and one works perfectly while the other a complete mystery.Edit : My project is very similar to, all the wiring is basically the same set up. https://www.instructables.com/id/Bright-USB-Powered-LED-Light/?ALLSTEPS

Question by slayer04 9 years ago  |  last reply 9 years ago


How to Replace PC Monitor LED Backlight with RGB LED Backlight?

Hello, Does anyone know how I can replace my monitor's LED Backlight to an RGB LED Backlight? RGB (Red Green Blue) LED Backlighting is superior to W-LED (White LED, which is just Blue LED without Green and Red). I don't even know why the mainstream LCD makers are trying so hard for superior picture quality, when CRT & Plasmas all used RGB light. It's not rocket science: they should just switch to RGB backlights, and replace them when they decay at their different rates. Anyway, does anyone know where I can find RGB LED Backlights for my PC Monitor? I know how to open up my PC Monitor's LCD panel, and remove the LED Backlight, but where can I buy RGB LED Backlights? Does anyone know where I can buy RGB LED Backlights?

Topic by davidwinst 1 year ago  |  last reply 1 year ago


HOLOWEEN RED WHITE & BLUE on One AA

Here is another blinking LED running from a single 1.5 AA battery. While the white and blue LEDs need over 3 volts. The white blinks in the transition moments between red to blue and to red !

Topic by iceng 4 years ago  |  last reply 4 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


Replacing led with mouse? Answered

I won a  mouse on ebay for $0.01. now i am annoyed with the red led due to the mouse transparency. i want to know if i can swap the red led with an infrared led just to get rid of the red light and still has the same performance By the way. there was another blue led in it that i chopped out without hesitation.

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


LED Math Help

I want to create a LED grow light but i am having trouble with the math. I have 5 blue LEDs that are 3w( Vf: 3-3.4 v and If:700ma). Now i want to wire these in a series. So if i were to use two of these for example, would it require more volts and the same current. So: 2@3v = 6v @700ma. 

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


LED circuitry help

Hello, I am wanting to make an LED circuit consisting of 11 blue LED's and a 9v battery. Can someone tell me which LED's to use, which resistor to use, how the LED's should be aligned (series/parallel), etc. for this? I do not know electricity very well at all and would rather not screw this up. Thank you

Topic by jgruber1 6 years ago  |  last reply 6 years ago


Beamless blue ray laser. Answered

I have this blue ray laser cgi.ebay.com/New-100mW-405nm-Blue-Violet-blu-ray-Laser-Diode_W0QQitemZ270557735013QQihZ017QQcategoryZ42884QQcmdZViewItemQQ_trksidZp4340.m444QQ_trkparmsZalgo%3DCRX%26its%3DC%252BS%26itu%3DSI%252BUA%252BLM%252BLA%26otn%3D5%26ps%3D63%26clkid%3D8839664070272331243 in an aixiz housing with the proper driver and correct voltages and amps.  When I turn it on it acts like a blue flashlight. Instead of making a beam like a laser should it makes a weak glow like an Led that’s not very powerful. I tried focusing the lens and using it with no lens. I am running it at 90.5 MA the maximum MA is 100MA. What is wrong with my diode? It is a 200mw diode the ebay seller says it can burn paper and pop balloons  It is dimmer than a dollar store laser pointer please help!

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


LED TO MUSIC HELP?

So as you can see in the video at the end of both songs I am having a issue with it cutting/shorting out. All i can think of is the tip31 transistors im using are overheating maybe? but what is really wierd is it shorts back to the speakers?? I have one transistor driving the blue leds and one driving the red leds. the red leds are being powered by a 9v supply and the blue is 15v( dont remember the MA but they both provide plenty. They are wall warts. When i  plug in the 9v power supply it makes a high pitch buzzing noise.... If anyone has any pinters i would appreciate it. Thinking of adding more transistors.... I cant figure out how to link it so just copy paste the link below into your browser... https://www.facebook.com/video/video.php?v=4627718865303&saved; and i'm following this diagram cause it does not have a switch like the others. https://www.instructables.com/id/Flashing-Leds-to-Music-multipurpose/

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


led ambilight rgb

I am interested in building Dan's RGB led system except where he used sliding potentiometers i want to use 3 light sensors with red green and blue filters. similar to Phillips Ambilight but in addition to behind the tv all over the room.any suggestions?i have limited knowledge of electronics and i do not know how to wire light sensors.a combination of the photos provided.

Topic by Robb 11 years ago


Harbor Freight 9 LED polarity.

Https://www.instructables.com/id/Harbor-Freight-Led-Flashlight-----of-DEATH!!/I want to use that flashlight, and mod it to a different colour led but I need to know if the pbc board has polarity.

Question by Noodle god 10 years ago  |  last reply 10 years ago


Resistors on each led? Answered

 I am designing a led array consisting of 17 leds in parallel using 4.5 volt power supply.The led calculator is telling me to use 62 ohm resistor on each - leg of the LEDscould I just use one 62 ohm resistor right after the power supply? Or maybe like 1 or 2 100 ohm resistors? I'm using blue leds 3.3 max voltage 20 Ma

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


RGB LED Sun and Moon

So, I'm working on this thing, its just an idea right now so I won't delve into it too deep, but I want to use a single RGB LED behind a frosted plexi screen as a Sun and another as a Moon, that will move on a clock motor. Could I get a white with a yellow tinge and a white with a blue tinge with a RGB and a few fixed resistors? I'm just wondering if that would be possible. Would I just set the red and green components to 70% and the blue to 100% for the moon and the red and green at 100% and blue at 70% for the sun? Thanks for the help. I don't have any RGBs so I'm just trying to theorize right now.

Topic by mattthegamer463 9 years ago  |  last reply 9 years ago


LED light with different LED, run at differen currents

Hi All i need some help, I am looking to build a light with a string of 2 led's 1 string will be cree royal blue (XPE) running at 700mA, which should use about 3 volts per LED 2 string will be cree Cool white (XML) running at 1500mA which should use about 3 volts per LED Each string will have 13 LED's in it, I actually need to run 2 sets of these. I would like run a set of a single power supply. so the Blue and white would run in Parralal with each other, and the 13 LEDs would be in seriers. So it would be string 1 Blue (3x13) = 39 Volts at 700mA 2 White (3/13) = 39 Volts at 1500mA Then a repeat of the above if possible off the same power supply. to add to this i woudl like to be able to dim each sting. This dimming function can be manaul, and would only reaaly occur a few times, while I adjust teh light setting to meet my requirments. So with this all said, can it be done, which I am sure is the case. then how do I do it.? Many thanks Damon

Topic by wukkie 7 years ago


Question about Led's

Recently I took apart one of those dollar store led flashlight's. There is 5 led's in it . all the +  anode were connected to each other and all the - cathode were conected to each other and they were conected to 4 button cell batterries no resister or any thing else does that mean that each led runs on 6 volts and as long as I use a 6 volt dc battery they should work fine without a current limiting resistor and if I run them in series I could use 12 volt battery. the led's look white but they give off a blue light?

Question by sml156 9 years ago  |  last reply 9 years ago


led powering question

I am building a garduino since planting season is coming near and this would be a great to start me seedlings off in. right now I have 3 banks of three red leds rated at 1.8v and in one of he instructible they said 7v was sufficient but i am connecting a 9v and can only power 2 leds and also I would like to go with an ac-dc converter but everyone i found has at least 800+ mA can someone point me toward a good power supply at the end I am looking at about 25 red and 8 blue LEDs

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


Headphone LED Question (HELP)

I have been making headphones and need some help. when wiring I soldered the red wire to the red wire, and the blue wire to the blue wire. It works fine but i wanted to add an LED, can I solder the led between two of the red wires? If I can't, can you tell me another simple way to wire one so it runs off the headphones? PLZ HELP!

Topic by NetReaper 10 years ago  |  last reply 8 years ago


KEYPAD WITH LED AND BLUETOOTH

NEED A MINI KEYPAD WITH BLUE TOOTH CONNECTIVITY WHICH CONNECTS TO AN ANDEROID APP AND UPDATES THE SCORES PUT IN ALSO DISPLAYS THE APP SCORES HOLE BY HOLE 4 PLAYERS AND SCROLL THROUGH AFTER 18 HOLES SHOWS SEND E MAIL AND THE APP IN MOBILE DOES THE NEEDFUL DISPLAY MAYBE INK DISPLAY ALSO OR LED TO AVOID SUNLIGHT BLINDNESS OR JUST A SIMPLE INKPAD TO USE ONLY ONE APP AND SEND SCORES BY EMAIL LIKE MARIO GAMES WITH A SMALL CHIP  https://skydrive.live.com/redir?page=view&resid;=E72864E182F5FBF5!358&authkey;=!ANVoQZ2q14clAC0 THE APP WORKING ON ANDEROID IS READY THE SUN BLINDNESS PREVENTS SCORE ENTERING IN OPEN

Topic by tigerramji 4 years ago


Hello how can I control a led to switch from blue to red? Answered

Hello I am looking to use RGB led's in my astra mk5 clocks. I am looking to have some sort of controller that powers up the blue led and when the sport button pressed the blue will have to power off and then the red will come on. Can it be done or am I going to have both on at the same time :-( Hello how can I control a led to switch from blue to red?Like a car with a sports button the clocks are blue and when the sport button pressed it will power off the blue and power up the red.?

Question by Dave-v-v 7 years ago  |  last reply 7 years ago


how can i remove these smd leds without melting them? Answered

I want to know so i can mod my ds with them. this is half of a cell phone with 19 blue leds.

Question by zack247 8 years ago  |  last reply 5 years ago


LED SET UP

Hi , new to instructables and have been looking at some posts and am now confused. Im in the process of seting up a led lighting board, I am using 20 blue high power 1W led's 350mw each. My plan is to run them from a computer power supply, but am unsure of the safest way to hook them up, parallel with a resistor for each or so on, I am basic when it comes to electronics and components, i can read a basic diagram. Also some parts listed in high power led driver on this site are parts numbers that are not available in Australia, i know i need to regulate voltage and current at 3.5v and 350ma but don't know what parts to use, i used led calculator and was told to use a 1watt 5.6ohm resistor in parallel. Please help

Topic by darky82 7 years ago


Nanotech makes white LEDs 5x brighter than before with warmer light.

New research with nanocrystals has created a new LED that gets 300 lumens per watt. Even better, the light is a warm white and not the cold blue-tinted white that we all know.The crystals absorb some of the LED's blue output and emit their own red and green light. That combines with the remaining blue light to produce a soft white glow.Existing commercial white LEDs are also based on blue LEDs. But they use a phosphor coating that converts some blue light into a broad spectrum of yellow light. When mixed with remaining blue light the result is a harsh blue-hued white. Link

Topic by fungus amungus 11 years ago


LED Board Control

Hi there.  I salvaged 2 boards of LEDs from an old LED can at work.  They were previously DMX, and have an array of red, green, and blue LEDs.  There are four leads coming from the board, +, -, a dashed line, and an unmarked line.  I am looking to integrate these with another project, but am unsure how to go about finding how to control them electrically.  I was thinking it might be digitally controlled right on the board, but I see no IC.   All I am looking to do is figure out where voltage needs to be applied in order to have different RGB levels.  If I helps, the number printed on the board is FT140PCB GS.  I am able to attach an image if that would be helpful. Any ideas of how to go about this?  Thanks a lot, anything would help!

Topic by chamberlain2007 7 years ago  |  last reply 7 years ago


DIY LED Growlights from LED Xmas bulb strings

I just got an Aerogarden for Xmas and it is a pretty neat little unit, but it has some annoying and expensive problems. The biggest one is that it uses CF bulbs that are on 16 hours a day, and they say that you need to replace the bulbs every 6 months, because the spectrum of the bulbs change as they age, making the plants grow less well. I did some research and found that the Weed industry has created a solution: LED arrays with a combination of red and blue LEDs (the color frequencies plants thrive on). These arrays are very long lived and use less than 1/2 the power of the CF bulbs in the Aerogarden. The problem is that even the cheap ones (200 LEDs) are $50, and you would need 2 for complete coverage in the Aerogarden. Then I had a brainstorm! LED Xmas Lights. They are already wired, ready to mount on a panel, and you can get Red and Blue strings of 100 on ebay for about $10 incl shipping. I don't know if they are the right Red and Blue, but it is an interesting experiment. Even if it does not work, you are set for Xmas lights for next year.

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