Instructables: question - leds Tue, 31 Mar 2015 15:19:25 PDT BLOX v1.01 Another LED power question? Vyger I bought some LED modules with the intention of using them to replace florescent tubes in some fixtures. But I am now getting a bit confused about the power requirements because the numbers don't seem to add up. These are like the ones I bought.
By: Vyger

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Mon, 30 Mar 2015 14:18:49 PDT
What is the best way to power 25 red 3watt LED's and 5 blue 3watt LED's with a 100w LED constant current source driver? voltskaterzb Please excuse me as my technical skills are not as good as I would want them to be :D So, I am trying to build a grow light with this setup: 1. 25 red 3Watt LED's - DC Forward Voltage (VF) : 2.2-2.8Vdc - DC Forward Currect (IF) : 700mA 2. 5 blue 3Watt LED's - DC Forward Voltage (VF) : 3.4-3.8Vdc...
By: voltskaterzb

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Sun, 29 Mar 2015 15:34:35 PDT
Trying to make an LED Map, so placing an led anywhere on the map will make it light, any help? AraMod I'm trying to make a map so that I can place an LED anywhere through it and it'll light up. Kind of like the old push pin method only the push pin is a single LED and I can place as many as I want on the map wherever it may be and it'll light up. I found one online but it's very expensive so I was t...
By: AraMod

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Sun, 22 Mar 2015 00:15:58 PDT
led values johnm56 All i want is a list of led voltage and current values, you would think this a simple task,not so.They are few and far between and when you do find some they all contradict.
By: johnm56

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Wed, 18 Mar 2015 18:46:52 PDT
How to battery power 12v LED strips? hanashoib I was going to power LED strips using a mains supply adaptor but because I want to put these lights in the kitchen, under cupboards, I'd have cables going behind the cooker. That's a big safety risk so I'm scrapping mains power. What solutions are there to battery power the LED lights. I'd like to ...
By: hanashoib

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Tue, 17 Mar 2015 02:33:02 PDT
Im trying to connect 4 high power leds in a series and I'm not sure what kind of power I need? zac.gooch here is a link to the led. They are 20w each...would that mean I need more than a 80w power supply?
By: zac.gooch

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Sun, 15 Mar 2015 19:09:53 PDT
How to cut a LED Strip by not the marks provided? crazybirzzz i'm lookin for a LED strip very special. 24V RGB 60 LED/m 1800 lumens / m IP 20 Trimmable each 5 cm. HERE COME THE ''PROBLEMO'' (Terminator) Every body offers to me each 10cm but it's imposible for us use that one. when I say everybody believe me  that I asked a lot of suppliers. Do you know how ...
By: crazybirzzz

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Tue, 10 Mar 2015 04:48:52 PDT
12V 5m LED strip. Cut into 1m, how much V per metre? hanashoib So I've bought one of those 12V LED strips. I want to install a 1m length of LEDs. Do I need 12V for each of the 1 metres or will I need something like 4.5V per metre. Thank you
By: hanashoib

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Fri, 27 Feb 2015 03:12:57 PST
Choosing the right LED Dimmable Driver... DonSpud Hi all, I am hoping someone can clear this up for me. I am building a DIY LED aquarium light and have chosen the following components: - 16 x 3W LED, Cool White - 4 x 3W LED, Royal Blue - 2 x 3W LED, Red I want to run all the LEDs off one dimmable LED driver and I have found this one which I thin...
By: DonSpud

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Wed, 25 Feb 2015 03:08:38 PST
Resistor for SMD LED 1306? SteveSquidFox I'm struggling to find any clues of what kind of resistor to use as I am a little new at this kind of project. I'll be using the lights in a small scale 9v project for up to 100 SMDs.  I'd appreciate any advice! Cheers :)
By: SteveSquidFox

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Fri, 20 Feb 2015 08:02:36 PST
LED driver and voltage help? joshuawcolvey Here goes nothing. How everyone can help. Right now i have a 50watt led that can be wired 85-277VAC. It has a led driver that  has all this on it. Vin:85-277VAC Lin:ac0.35A Vout:DC20-36V Lout:1500MA+-3%MA 50Wa/70Wb Now with all that being said it is an hP0050 led driver. Now on 120VAC it pulls .42 ...
By: joshuawcolvey

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Mon, 2 Feb 2015 18:37:09 PST
Automatic LED turn on and off circuit, can someone check my circuit to see if it will work? hanashoib So I'm working on project where I want LED strips to turn on and off depending on whether or not the IR LED and phototransistor circuit is open or closed This is what I've come up with. Can someone please check and tell me if this will work or not (sorry I can't seem to find a good simulator) It m...
By: hanashoib

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Sat, 24 Jan 2015 10:37:18 PST
Can i use a 16.80 volt power supply for my led strip? dionisis.ntaouros Hello guys i have an old router's psu . the label on it writes 12V but the multimeter writes 16.80 Volts. Can i use this power supply or not ?
By: dionisis.ntaouros

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Fri, 23 Jan 2015 09:56:42 PST
Amps and Volts? achopra3 So i have a atx pc power supply and i am going to use a pci cable to draw power from it for a led lighting system and the led light system can only take up to 12 v at 2 a, will that destroy the led light system or will it be fine? (also i cant open up the box that controls the light system to fix th...
By: achopra3

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Wed, 14 Jan 2015 20:01:49 PST
Bicycle generator for lighting a led strip? mick_ralte I want to make a bicycle power generator for a fair. I want to make two of those in such a way that the one who pedal faster get more number of led bulbs turn on. Can anybody help me with this kind of project. 
By: mick_ralte

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Thu, 8 Jan 2015 09:13:58 PST
Would I be able to put one 100 ohm 1/4 watt resistor in place of two 50 ohm 1/4 watt resistors? Jakester98 The attached picture explains my question a little better. Thank you guys!
By: Jakester98

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Wed, 7 Jan 2015 01:34:47 PST
Best LED colors for long lasting illumination w/ a CR2032 3V Lithium Battery? shewyne an exterior installation where the temps are in the 20's.  Needs to last 7 - 10 days.
By: shewyne

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Sun, 28 Dec 2014 20:33:20 PST
How can I salvage LEDs that are welded to metal heat sink? -max- I have a light fixture that used to be an street lamp, and the 350mA 240V constant current ballast failed. The LEDs appear to be welded directly to thin insulated metal sheets which as somehow bonded to the large metal heatsinks. I think the LEDs are Cree XR-C's, and there are 6 of them on each modu...
By: -max-

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Sun, 28 Dec 2014 14:31:56 PST
Best LED driver lokerin I am looking at making a chandelier which will consist of 6 groups of 13 LEDs. Since this is being hooked to a 120 volt circuit I will need a LED driver. Is it better to build the driver myself or just buy one.
By: lokerin

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Thu, 11 Dec 2014 22:46:57 PST
can I connect pre-kit led strip to a battery wired led strip (see pic)? tamsee13 connecting a led kit (white strip) to battery pack (black strip) but am I stripping end both black and white to make it happen. Or way to make black same as white?  Is there an easy way to do this?  Thanks in advance.
By: tamsee13

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Thu, 11 Dec 2014 04:21:36 PST
How can I replicate this? Tom101222 Particularly the display that says volts , I have no problem pushing the data to the numerical display but I have no idea how to go about making the light up display that says Volts.
By: Tom101222

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Wed, 10 Dec 2014 15:17:41 PST
Piezo triggered LED Strip with multiple static and flashing colour? oesheppard Hi There are already a few threads and topics on this site explaining how to hook up a piezo triggered light strip, however I'm looking to build a custom drum kit with particular lighting system and i can't find the info I need to build it.  Inside the drums I want a constant, static colour of my ...
By: oesheppard

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Tue, 2 Dec 2014 05:49:45 PST
Cutting and re-wiring X-mas LED garlands (not strips) Raitis Hi, Has anyone had to deal with cutting LED Christmas garlands into shorter pieces and then rewiring-powering them? What should I keep in mind when doing so? As far as my electrical knowledge goes I should first inspect the voltage which is provided by a standard converter already on a garland and ...
By: Raitis

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Wed, 26 Nov 2014 02:42:23 PST
Automated lighting inside wardrobe? K20Evo I'm in the middle of custom building a fitted wardrobe.  So far, I have hacked an Ikea PAX Wardrobe to fit into a wall with a custom shape.  The issue I am now facing is how to do the lighting.  On the right side, I have 3 shelves which I want to underlight, and on the left side, there are 2 rails....
By: K20Evo

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Sun, 23 Nov 2014 13:33:34 PST
im trying to hook up 200 LEDs in groups of 3-4 that can individually be turned off, whats the best way to power this? iZombiemovies. so im new to calculating power needed for projects so im hoping for some help im trying to hook up 200 LEDs in groups of 3-4 that can individually be turned off, whats the best way to power this? should i run the 3-4 leds in parallel ? and i need to be able to turn clusters of lights off.
By: iZombiemovies.

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Thu, 20 Nov 2014 21:03:46 PST
Trouble blinking leds with TIP31 en_rov Hello everybody, I am trying to make a blinking circuit to hook up to the LED strips in my car so they blink in sync with the bass.  I have made a circuit following some instructable here, I can't recall which it was. Anyway, I'm pretty sure the schematic is correct, because the leds blink. Now tw...
By: en_rov

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Tue, 18 Nov 2014 03:51:48 PST
How to connect 10 lights or LED's in sequence having all lights on when the switch reaches 10? DaveG3 I want to construct a panel with a 10-position rotary switch that lights a vertical column of lights or LED's.  At position 1 the bottom light is on, at position 2 both lights 1 and 2 are on. At position 8, lights 1 through 8 are all on until at position 10 all 10 light are on.  The bottom lights wi...
By: DaveG3

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Fri, 14 Nov 2014 13:44:23 PST
Making LEDs flicker? elegant.mess.1986 I'm building a costume piece and I really want to have a gem flicker different colors, using LED backlighting. I know I've seen products that make the LEDs "chase" or "run" but, I want these four lights to go in a circular motion, so that the gem looks like it just has light flickering different col...
By: elegant.mess.1986

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Fri, 14 Nov 2014 13:36:43 PST
Can I run different voltage LEDs off a 9V battery? BillJ1 I have a small project that uses a 3 light LED list that runs off of 3 AAA (4.5V) batteries, but I also want to power a 12V LED string (for cars about 24" long) and I am uncertain the mA draw for either. This is for a follow-up to fine tune my son's 2014 Halloween costume. I run the 12V string off ...
By: BillJ1

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Wed, 12 Nov 2014 14:43:00 PST
How to step down a 12v DMX LED Controller to 5v? Pathogenex Hey i currently have an "Abstract MFD-10" DMX controller that i want to run 64 LEDs/2meters of "LPD8806 +5v Strips" off of. DMX Controller= Led Strips= How do i step down the 12v supply t...
By: Pathogenex

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Sun, 9 Nov 2014 09:20:06 PST
single led light bulbs? ron.stone.733 I have some single led light bulbs. I want to string 113 of them. they're 1.5 watts each and 12dcv. what transformer and gauge of wire should I use? G4 socket. there's 24 led's in each light. they're pretty small.
By: ron.stone.733

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Fri, 31 Oct 2014 06:34:44 PDT
Matching 700mA constant current driver to 20mA LEDs? michael.pokorny.54 Hello all: Ultimately I'm trying to drive upwards of 100 3mm white LEDs in an art project with dimming and a connection to 120v AC power (this is for a chandelier). I've been playing around with some constant current IC driver like the Supertex CL2 as well as 5 and 12v power supplies but I've been...
By: michael.pokorny.54

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Wed, 29 Oct 2014 20:04:11 PDT
3v led strip? Algy I need to source a large quantity of light sources for interior emergency use. Needs to be a short, 300mm multi led light strip powered by a 3 v watch battery, with a mercury type position switch. Any ideas  where I could have them made?
By: Algy

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Tue, 28 Oct 2014 00:36:09 PDT
Help me. I bought a lamp Led 100w but the film that covers the bulb came very dirty. What I can do? logoaki There's something I can do to clean it without spoiling? I think if I use it so I will lose a lot of brightness.
By: logoaki

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Fri, 24 Oct 2014 11:53:56 PDT
How to make a 4 LED switch anthonyv4 So I am making a deadmau5 helmet and i want to add 4 LEDs to the inside. I was wondering how i would set this up and what kind of power supply I would need such as 4AA batteries or that. The LEDs need to be able to be flipped off by an SPST switch and they should be able to run for around 3 hours be...
By: anthonyv4

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Sun, 19 Oct 2014 09:19:26 PDT
How do I connect an RGB LED Strip to an Arduino DMX controller? StumpChunkman I've been working on a project for a few months now and it's getting to the point where people are suggesting DMX as a method to control our RGB LED Strips. The LED Strip I have is 60ppm (LEDs per meter), and each LED is individually addressable. It runs on 5VDC. In the attached images you can see...
By: StumpChunkman

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Tue, 14 Oct 2014 14:44:44 PDT
How many LEDs rated at 5V can I use on a 6 Watt Radio Amp? javierdiaz4 I there, I have a 6 watt radio amp that if I used the Voltmeter correctly is only really using 1.3 watts at it's highest volume on the busiest song.  I want to add LED lights to the dial and I'm wondering how many can I use?  I purchased LED lights rated to a max of 6V and the engineer told me that ...
By: javierdiaz4

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Mon, 29 Sep 2014 20:32:45 PDT
Is my LED gas mask idea possible with the 'Getting Started with Arduino Kit'? Doitourselves I'm making a gas mask for my Resident Evil Umbrella Soldier Costume for Halloween but stuck at the LED part. I have the 'Getting Started with Arduino Kit' (seen here:
By: Doitourselves

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Sun, 28 Sep 2014 16:24:00 PDT
12v to 24v converter makes led flick - help! pedrosaldanha84 Hi!! I installed 3 led lamp 24v in a caravan(RV). I have as a source a 12v battery from the 12v battery (a battery from a car with 90AH). To supply the led lamps I have installed a 12v to 24v convert 3 amp between the 12v battery and the 24v led lamps. But as soon as I turn on the power, all leds s...
By: pedrosaldanha84

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Thu, 25 Sep 2014 12:30:16 PDT
how do I rig a row LEDs to come on and stay on in response to an outside stimuli? paula.zelankoprisco I want to make a wedding card box that has a row of LEDs in hearts (like the life bar from Zelda that is a row of hearts that light up as you get more life) So as more and more cards are put into the box, the hearts will light up. I picture that after, say, 3 cards are put in, that half of the fir...
By: paula.zelankoprisco

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Wed, 24 Sep 2014 15:59:49 PDT
96 by 286 LED Light strobe. michaelferns1 Hi I am Michael, and i want to make a Name board which will have 2 parts. it will have 382 in total divided in 2 parts leds96/286.  I want to make a strobe controller for these many leds.  it should blink 96 led at one time and the other 286 at other time. Please help with the circuit diagram or th...
By: michaelferns1

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Wed, 24 Sep 2014 10:14:54 PDT
What kind of LED is this? And how to use this using DC or AC? CarlGemarino Good day everyone. I'm new to Instructables and I'm searching for LED projects. I have destroyed our old CD player which have so many LEDs in it, and found out they are not the conventional circle LEDs. They are rectangle-shaped. I remembered that these LEDs light different colors, but I'm not sure....
By: CarlGemarino

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Fri, 19 Sep 2014 23:39:18 PDT
Looking to build a led flicker circuit? 'earl Hi, my cousin asked me to help him finish a project. He has made 8 pumpkins for a halloween decoration, And wants to have the lights and mouth light up. So I figured about 5 led's per pumpkin (maybe 3). And I have rgb ones on hand already so I figured I could use those to make orange flickering ligh...
By: 'earl

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Mon, 15 Sep 2014 20:07:00 PDT
Issues and safety precautions to take with a 50-70 feet 12v bus line? bipl12 Hi  i am thinking of building a emergency LED setup with some 1w or 3w LEDs which will be connected to a 12v bus line powered from a deep cycle battery. I will be using a fuse between the battery and the bus line. I am thinking of placing a cluster of LEDs every few feet(7-10 feet). Each LED will be...
By: bipl12

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Thu, 11 Sep 2014 01:48:22 PDT
Led Power Supply? charles.terhune  I am going mad over trying to figure out what power supply I need. I am making an arduino controlled aquarium fixture and plan on using 30x3w leds. From what I understand using resistors could cause fire and I don't want that of course. I like the look of laptop drivers like this one
By: charles.terhune

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Wed, 20 Aug 2014 16:11:18 PDT
Is it possible to make a LED at home? RichárdK I want to make a Little LED from scratch
By: RichárdK

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Wed, 20 Aug 2014 11:41:13 PDT
How to make the voltage of the RGB LED's green and blue higher in this circuit? worthyrabbito So I have two 5mm RGB LEDs. In my schematic diagram, RGB LED 1 is common cathode, while RGB LED 2 is common anode. My LEDs config is this: Forward Voltage: 2.2V (R), 3.2v (G), 3.2v (B) Forward Current: 20mA I think it's the same for both? Of course when I send data from the PIC pins, one will tur...
By: worthyrabbito

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Tue, 19 Aug 2014 21:47:36 PDT
Help needed - I'd like to run some mains powered led lights from battery instead and control remotely? mikepalmersinger Hi all and thanks in advance for taking the time to read this plea.... Here's a bit of background to the project I'm trying to undertake. My wife and I recently got married and as we met many years ago working on a cruise ship, my family decided to commission a model builder to build a replica of t...
By: mikepalmersinger

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Mon, 18 Aug 2014 09:29:05 PDT
how to solve samsung full hdmi led tv isuue? ks vani my tv sumsung model UA 32F5500ARXZN  led full hdmi  gives trouble. it's blinking /flashing. audio & vedio is good. how to fix blinking issue?
By: ks vani

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Tue, 12 Aug 2014 08:45:33 PDT
Problem with 8x8x8 led cube ? AVISHKAR_ I made a 8x8x8 led cube , i had finished all soldering  all leds works properly   but now i have a problem some of the glows(lightly) when ground is given to the +ve leg of the leds  or when 2 when +ve and -ve is given to -ve  of different layers Is this problem negligible ?? will the cube works ?? 

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Fri, 8 Aug 2014 23:32:28 PDT