Where can i get LEDs?!?!?!?!?! i see all these awsome projects but i cant find LEDs. please recomend a american store or send me a link. thx!!!!!!!!!!
Posted by laxfreak 11 years ago
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)?
Posted by Emomo 1 year ago
I Need help to build a led light sheet with 100 3mm LEDs they are 3.5v LEDs I have never worked with LEDs before or resistors so please keep it in simple terms. the idea is to use a 12v battery and reduce it to 3.5v supply any ideas comments are appreciated
Posted by YARTZ 9 years ago
10 green leds 2.4 max volts
Asked by jconner3 6 years ago
Asked by thecrazymagnetman 5 years ago
I've had these LEDs layn around for a while and i can't think of what i should do with them
Asked by Inventor Pro 7 years ago
Asked by arbp 7 years ago
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. I want to use it in my first project using LEDs but I don't know how to use them, or are they RGB LEDs. I also cannot test it because I haven't bought a soldering iron to melt the solder and remove the LED. Please help me. Thanks in advance. I have pictures to show the LEDs I'm referring to.
Asked by CarlGemarino 3 years ago
Dim LEDs over 100 ft 12v source through 12/2 mc
I wanted to do some cool things with LEDs but i want to diffuse the LED's light in order to light up the biggest amount of area while using the least possible amount of LEDs and electricity.
Asked by Mrpnut 9 years ago
I need to drive 112 LED's from this chasing circuit and it is limited to 48 LED's. I'm hoping some minor changes to the circuit will allow for this. I would appreciate any help since I am a novice in this area. Attached is the link to the chasing kit and the manual with circuit diagrams. Thank you in advance for any assistance. http://www.rainbowkits.com/kits/cl-1p.html http://www.rainbowkits.com/kits/instructions/CL-2.pdf
Asked by GrimaC 2 years ago
1) can i use 9V battery to it? 2} Its a long strip that written 12v every 2 led's, so if i cut, How much Voltage should i apply to it?
Asked by miraheng 1 year ago
Asked by Keatingl 7 years ago
Asked by achanta 7 years ago
So i picked up an RGB led at radioshack and when i got home, instead of having 2 pins like normal leds, or 4 like some RGB leds, it had 3 pins, and im not sure what to do. I mixed and matched the pins with ground and positive wires until it lit up, but it just ran through a cycle of changing colors then stopped and doesnt light up again unless i disconnect the led and connect it again. And as far as i know, the one pin not used in this cycle doesnt do anything. So is this all the led does or is there more? P.S. i wasnt using a potentiometer or anything, just connecting it to power.
Asked by texpert 6 years ago
Asked by coolbeansbaby68 6 years ago
Hi, I want to make a circuit where I can connect 5-10 LEDs. When I turn it on first LED should turn on for a moment and then turn off, after that the next LED does the same and so on. So that it has an appearance of 'flowing light' throughout the circuit. The problem is that I don't know the name of this circuit or anything so I am unable to search anything on the internet regarding it. Any help would be much appreciated. Regards Tehreem
Asked by tfatima1 4 years ago
Leds on ebay,at different online shops and,found in old electronics.can any led work with say, 12 volt car power,[dc, with the appropiate resistors]disconnect it and hook it up to ac house[again,with the appropiate resistors]current?should i look for certain voltages sources when buying or just strive for the voltage the led calls for?also,is 12 volt dc car power the same as 12 volt computer power?the fans and such on computers [as far as i can tell]run on 12 volts.might seem like a silly question,but then i'm REALLY not very conversant with all this led tech.in other words,can i run an led off any[ac or dc]current as long as i use the correct resistor?thanks for schooling me on this.i'll be forever gratefull
Asked by frankentrike 7 years ago
Making a wooden rangehood for my wife for our annivesary, and I want to use LEDs for the light source. I wan to use 3 banks of 30 lights in each 4X8" oval space, and from what I have read it would seem to better to wire each set in parallel. My question is, do I need to put a resistor on each LED to adjust the voltage to the proper amount, or (since it is wired parallel) will one work for all?
Asked by Billwelder 7 years ago
Asked by AmenolaS 4 months ago
Ok one set reads current: 20mA suppply: 3.2V and the other reads current: 25mA supply: 3.3V
Asked by guy86 8 years ago
I want to make a sign for a play that can be turned off for other scenes. I want to wire led's together in one circuit with one power source. (how much power and what type would I need?)
Asked by bluefly1215 9 years ago
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: email@example.com Skype: luckylightled E-mail: firstname.lastname@example.org Tel: +86 755 8461 3005 Fax:+86 755 8461 3126 Website: www.luckylightled.com
Posted by cindy2819 7 years ago
Ok... i have been looking into this for the past month tried to use a TIP31 transistor to make my led light strips flash to music in my car by using my sub amplifier as an audio out source...... and it would not work so i was wondering if you someone could help me out to make a box that would allow for audio in from my amplifier that would have a circuit that would perform the task of making my led light strips flash to my music. thanks.
Asked by dallyski 5 years ago
I'm working on building a lamp out of a guitar I'm using fiber optic cable as the strings and want to put leds under them to make them light up the lamps going to be plugged into a wall socket. what is the best way to do this.
Asked by rabbitflinger 8 years ago
Possibly with around 100 bulbs. Maybe using those 4 pin RGB leds? Could someone build something like this? I want to be able to change from vegetative cycle to flowering cycle using just the one lamp setup.
Hello from Scotland Being costume and armour builder but being new to the electronics world I noticed this build using 41 led lights this would be perfect to compliment a build i'm currently working on my question is this do you have some sort of step by step guide to this build as I really think this will work my understanding of electronics is very very basic I can rig some leds together that's about it Any help would be fantastic
Asked by TattooedJudge 1 year ago
I want to create a discharge indicator for a capacitor bank. I planned to do this with a simple switch-resistor-LED setup. My LED has a forward voltage rating (as well as max reverse), and it has a max current rating. My capacitor bank is 330V, so once I calculated the resistance I needed for the 20mA I plan to use, I created a board of resistors that will give the required current and dissipate >10W. My 20mA is 10mA less than my LED's max current rating. Its forward voltage is 2.8V. Even though I have proper current levels and power dissipation, will the 330V burn out the LED? I didn't think it would, but I wanted to look around and make sure. I couldn't find any definite answers. Thanks!
Asked by TheMike25 5 years ago
would appreciate some info regarding the 1/2 W 5mm "pirahna" superflux leds. started using them and think they are great. do they need any other regulating component other than a resistor to keep them running safely? how do they hold up over time? i just need to use one or two in my projects (powered by a 9v unregulated wall wart). thanks!
Asked by lightartist1 7 years ago
I want to learn basic circuits, soldering etc. to make LED toys and whatnots for my boys. This would be a fun thing to learn and share in the coming winter months when we're stuck indoors. Can someone recommend a good book or guide? Thanks in advance!
Asked by FyreAntz 7 years ago
Inside the little box that lights up the balloon are 2 watch batteries and an LED with two prongs, the 2 batteries are stacked so the negative terminal is on 1 prong, and the positive terminal is on the other i tried to use a bigger battery but it still won't light up. Anyone know why? or if there is another way to make it light up with a bigger battery?
Asked by IamGOD Biotches 5 years ago