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


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


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


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


Can I connect 20 leds together on 110V tension so they won't fuck up in some time? If so, how?

Posted by guilerms 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 2 years ago

help to build a led light sheet with 100 3mm leds

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 10 years ago

LEDs strips

who can help me, i need to make a very long LED strip, and i dont know how to do it, thnx for yor help :)

Posted by eyoung1 7 years ago

12 volt leds

I work at a custom motorcycle shop and use led lights in our fenders. I'm having trouble finding a constant supplier of 1,2,3, sequenced led lights for run light,turn,and brake. Any one can help that would be awesome!

Posted by cbarr600 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

Posted by cindy2819 8 years ago

Game turn indicator - how to build?

My family likes to play a particular card game called Phase 10. The way it works is that after each hand, the deck is handed to the next person to deal from.  We're often so busy chatting/having fun we forget exactly whose turn it is to deal. Not a big deal of course, but all our attempts to keep track have failed.  I thought it would be cute to set up a little strip of LEDs and have them be controlled by a button. Push button, next LED lights up, with each LED assigned to a player so we know whose turn it is to deal next.  There's nothing commercial I could find, and I don't know enough about LEDs, controllers, etc, to do so - so I'm looking for someone who can explain what has to be done (and the materials) so I can build it... or if someone wants to take on the project and get paid for it too, that works.  It's meant to be a christmas present for my father (who's the worst one of all about remembering whose turn it is) so - that's the estimated deadline. Anyone got info for me on how to set this up?

Posted by sevendaysky 5 years ago

Near-IR LEDs

Does anyone know of a good Near-IR LED that emits at about 775nm? Looking for a compact, high output package. Thanks

Posted by scaylos 9 years ago


Im looking for ideas and ways for LED light up costume for halloween i know its a little early for it but i want to plan and design my costume. Note: it has to be a horror movie character.

Posted by reusesave 9 years ago

Soooo... What can IR LEDs be used for?

I have three of them that I found in a Furby. What can I do with them and the rest of the Furby?

Posted by Sunbanks 10 years ago

wiring a lot of LEDs, don't know the math. please help

I'm trying to figure out the best way to wire up 187 LEDs on a panel. They will probably be 3.4~3.8V, I'n not sure how the math works to determine what kind of power I'll need or what the best way to wire them would be. Help would be greatly appreciated. Thanks in advance!

Posted by aintMichael 10 years ago

Build Night LEDs at Numurkah Secondary College

Numurkah Secondary College hosted is first ever Instructables build Night, featuring LEDs. A fun night was had by all, making different projects, playing with the laser cutter, 3d printer, vinyl cutter and attaching LEDs to everything including small children. Throwies were a very popular project, also a couple of sound modulators were build on the night, and a chaser that was designed for florescent tubes was converted to LEDs.  The monkey Light, and blinking faux neon signs were a hit will the little kids, and big kids alike. Thanks to Instructables for supplying the LEDs and batterys and also to Instructables member 'motoring'  for organising the night.

Posted by liquidhandwash 4 years ago

LEDs on eBay?

My brother and I recently made an eBay account, and we were just browsing through everything and we came across many LEDs. Most of the LEDs in bulk that I saw were from China or Hong Kong. I am just curious if anyone knows how reliable, safe, and if I would be getting my money's worth. I did buy some from besthongkong.com, and those came, but I am a little skeptical about these guys on eBay. Any suggestions?

Posted by Brennn10 10 years ago

Smiley with leds

Hi, I want to create a simple toy for children that can respond to a child's actions. I want the toy to look like a character with emotions : it can be happy, sad, etc.. I'm looking for a way to show the emotions through the 3D printed shell. I like the way the object in the picture does that. I was wondering if they use leds or lcd screen or anything else. Do you have any idea ?  Thanks Catherine

Posted by Catherine Dupont 1 year ago

LED Gloves

I was in a bar tonight and there were these guys with these weird LED gloves and were doing this little show where they wave their hands arounds and it looked really awesome. Seems pretty simple. They have 16 watch size batteries linked up to super bright LEDs. I kinda thought that was a good project to try instead of buying a pair for 100 dollars that are considered quality.  I really don't even know how to go about this.  They're called Light Show Rave Gloves. Here's a video of what they look like afterwords. http://www.youtube.com/watch?v=gwNCnMNs6ww&feature;=player_embedded

Posted by bofthe951 8 years ago

making a IR Light

Im planning to build a IR light using 10 IR leds in parallel with a forward voltage of 1.2 and a forward current of 100mA and five 6.8 Ohms resistors. Will 2 AA batteries be enough for this Thanks

Posted by specializedrider 9 years ago

Question regarding Music to LEDs performance improvement.

I recently built the simple circuit that everyone has seen on Instructables on how to sync LEDs to music using the 3.5 audio jack from your computer. I had a couple question on how to improve the performance. The lights bump to the music accordingly, but it has to be a profound change in sound for the lights to really look cool. (Like from silence to a bass hit) Is there a way to improve upon this? To make the lights respond in a clearer way when there is a lot of stuff going on in the song? Perhaps a different voltage? (Currently using a 9v battery to power the system) The sound on my computer has to be turned up quite high for the circuit to respond. Is this normal? Thanks in advance.

Posted by L3fty 6 years ago

What kind of power supply for this LED array?

Hi, My grow light failed on me recently. It's a series circuit of perhaps 3W diodes.  LED array pic: http://i.imgur.com/YQfJSrZ.jpg There are 18 diodes, and the colors are:  10 x 660nm (red), 3 x 630nm (red), 1 x 610nm (orange), 1 x 520nm (green), 1 x 430nm(blue), 2 x 450nm (blue), Total: 18 pieces Driver: http://i.imgur.com/Fpt2x4q.jpg I'm not really that knowledgeable about electronics, so what specs should I look for when buying a replacement driver? Is it as simple as getting something that is 8-12W like in the image, or is there more to it than that? Thanks.     

Posted by horsebones 1 year ago

Got a shopping list but where to buy????

Is there any one place that i can buy LEDs ,resistor , and other components.I have found many company's ,but no all-in-one is there even such a place. Seams to me like there should be any help will be very appreciated thank you.    

Posted by modzero556 7 years ago

Velleman Sound to Light module LEDs always on.

I  have made the velleman sound to light project: http://www.vellemanusa.com/downloads/0/minikits/manuals/manual_mk103_rev1.pdf the LEDs are supposed to turn off when there is no sound and go bright when there are loud sounds. Mine are bright all the time. I first tried the kit using my own blue LEDs instead of the red ones supplied, these worked for a time then they just stated to give a VERY small amount of light. I switched to the red ones and now they are on high all the time. I also accidentaly connected R3 with C4 (see PDF). C1 and R2 are also connected by solder, im not sure if it should be like that, I also kinda damaged the C1 connection hole as I partially burnt it with my soldering iron D:.  Could any of these issues be the reason why my kit inst working? I have attached pictures of my board Many thanks, Rushmoore :)

Posted by Rushmoore 3 years ago

Please Help Me with a Project

Hi:) So I'm pretty new to all the electronics stuff.  The extent of my training includes the Flashing LED heart kit from Radio Shack (I did have to solder some stuff). I have also done one other project with LEDs. Anyways, I'm trying to make this without my boyfriend's help.  He has had to help me with the others because this stuff goes over my head.. Anyways, I want to take a wooden box (like from Hobby Lobby) and put LEDs in it.  Initially I wanted it to work just by opening the lid, but since that seems kind of difficult, I would also accept a switch... SO, how do I do it? What kind of power would I need? Say I use 10 LEDs? Is that too many or what? I know I didn't mention the size of the box but I haven't bought one yet.  I don't want to start a fire, therefore, I'm not sure if the wall outlet (AC?) power is right or not. I appreciate your help in advance.

Posted by anagy6 6 years ago

battery life

Any one know about how long 4 double a's wired in series will last with a 200 milliamp load, here is what the online LED calculator said, I'm working on putting this in a small flashlight:Solution 0: 1 x 2 array uses 2 LEDs exactly +----|>|---/\/\/----+ R = 27 ohms +----|>|---/\/\/----+ R = 27 ohmsThe wizard says: In solution 0: each 27 ohm resistor dissipates 270 mW the wizard says the color code for 27 is red violet black the wizard thinks ½W resistors are needed for your application together, all resistors dissipate 540 mW together, the diodes dissipate 700 mW total power dissipated by the array is 1240 mW the array draws current of 200 mA from the source.-thanks

Posted by firemanfu 10 years ago

Getting started with LEDs

Hey Everybody, This is crazy but I ran into this website through a random link in Lifehacker and after what I saw here, I quickly made an account and I bought PRO just to support the site. I am a big fan of communities that exist to enlighten the average brain and to evolve us as beings in creating new things and getting out that genius in ya. Anyway, my current huge curiosity is LEDs. I love them, I don't know much about them except that they are little plastic bubbles that take very little electrical power to get them going. I want to learn more however, I have a project which is to light up my computer desk's edges in my room. Problem is, I don't know where to start. I tried reading a bunch of instructables here already but most of them do not really explain the wiring process. I am a graphics designer and I have had a minor in computer science but never got into electrical engineering. I understand the simple things that go behind an electrical cricuit (like power sources and positives and negatives) but thats the extent of how much I know. I need somebody to help me and get me going so I can start evolving. Could anybody here help me get started? A few explanations, guides, tutorials? Thank you very much in advance.

Posted by shazameister 9 years ago

Temperature LED lights for motorcycle

Hi I would like to build a temperature sensing leds for my rid to work on my motor cycle to check for black ice!. I want have this circuit as small as possible (fit in a bike light so can mount on handle bars of my motor bike) I have been able to do this via a Arduino board but when I convert this to work on a Attiny85 it will not read the same results. I think this could be due to the way the Attiny85 converts the elec signal. I use a 4.5 volt battery (3 * 1.5) could this be the problem? Here is the code I have used for both the Arduino (which works great) and also the Attiny85 (not working as should) /* temp lights using Uno & LM35 Arduino */ const int tempPin = A0; const int Temperature= 0; // declare the led pins  const int led01 = 9;   const int led02 = 10;   const int led03 = 11;  //declare the variable for the temp int temp=0;//changed to = 0? int AjustTheTemp= 0; //Declare the leds as outputs void setup() {    Serial.begin(9600);      pinMode (led01, OUTPUT);   pinMode (led02, OUTPUT);   pinMode (led03, OUTPUT); }     // Main Program     void loop() {         // read the voltage from the temp sensor     // and change it to celsius     int reading = analogRead(Temperature); float voltage = reading *5; voltage /= 10; float TemperatureC = (voltage - 0.5) ; //show temp in monitor so can make changes        Serial.print("TEMPRATURE = ");   Serial.print(TemperatureC );   Serial.print("*C");   Serial.println();     delay (1000);//delays the print to monitor                // by 1 sec   if (TemperatureC<(1-AjustTheTemp)) {   digitalWrite(led01, HIGH);   digitalWrite(led02, LOW);   digitalWrite(led03, LOW);   } else if(TemperatureC<(4-AjustTheTemp)){   digitalWrite(led01, LOW);   digitalWrite(led02, LOW);   digitalWrite(led03, HIGH);  }    else if(TemperatureC<(10-AjustTheTemp)){   digitalWrite(led01, LOW);   digitalWrite(led02, HIGH);   digitalWrite(led03, LOW);      }      } /* temp lights using Attiny & LM35 */ //const int tempPin = 0; const int Temperature= 3; // declare the led pins (attiny) const int led01 = 2;   const int led02 = 1;   const int led03 = 4;  //declare the variable for the temp int temp=0;//changed to = 0? int AjustTheTemp= 0; //Declare the leds as outputs void setup() { //  Serial.begin(9600);      pinMode (led01, OUTPUT);   pinMode (led02, OUTPUT);   pinMode (led03, OUTPUT);   pinMode (Temperature, INPUT); }     // Main Program     void loop() {         // read the voltage from the temp sensor     // and change it to celsius     // temp = analogRead(Temperature);     // temp = temp * 0.48828125;        int reading = analogRead(Temperature); float voltage = reading *5; voltage /= 10; float TemperatureC = (voltage - 0.5) ; //show temp in monitor so can make changes        // Serial.print("TEMPRATURE = ");   //Serial.print(TemperatureC );   // Serial.print("*C");   // Serial.println();     //delay (1000);//delays the print to monitor                // by 1 sec   if (TemperatureC<(27-AjustTheTemp)) {   digitalWrite(led01, LOW);   digitalWrite(led02, HIGH);   digitalWrite(led03, LOW);   } else if(TemperatureC<(29-AjustTheTemp)){   digitalWrite(led01, LOW);   digitalWrite(led02, LOW);   digitalWrite(led03, HIGH);  }    else if(TemperatureC<(31-AjustTheTemp)){   digitalWrite(led01, LOW);   digitalWrite(led02, HIGH);   digitalWrite(led03, LOW);      }      }

Posted by minimadmalc 3 years ago

Vertigo Lights

A few years ago I was attending a Halloween attraction where a conversation started about seeing a red skull.  We asked a few of the actors and I got the name of the attraction's special effects person.  What we were seeing was a programmable sheet of red LEDs that would flash so fast that you could only see the after image.  The F/X guy called it Vertigo Lights.  I understand the concept, but wondered if anyone has come across anything like this.  Could this be controlled by an arduino, or would a program need to be written to control all of the lights simultaneously?  I haven't been able to find anything like it in any of my searches. Any clues would be great!

Posted by ThePolrBear 6 years ago

LEDs Remotes...ideas and possibilities

Ive seen diffrent examples and ideas on what i want to do but well...not exactly. first off i want to do a simple blue ambent light system with a simple on and off remote...big room dont want to have to git up and cut them off...second i really like the light bar system that syncs to music...id like do use that same light system and include a sound jack or something so that same light system will blink along with my music...now ive scene them done individualy but not together...if it comes down to it there could be a switch to change between light and music modes....also my biggest problem is size....i have a large room with a almost 2 story celing in one part i want to install this whole thing along where the entire length of where the celing and walls meet...its gona be hugh.....btw i relize how bright this is gona be and i really want to build it just to open my windows and stand outside and watch it!!!!! :-) so any help would be nice......Thanks

Posted by hvac2010 10 years ago

Just picked up a strip of LEDs...need a power supply for them

I just bought these http://amzn.to/1HgdTOC by accident (One-Click buying...lol) and I figured instead of returning them and getting my money back, I could actually use them around my room. The only problem is, I'm not too sure how to actually power them. From what I understand, they require a 12V 5A power supply. Is there anything common I might have in my house that I could use to power these? If not, where can I pick one up cheap-ish and with fast shipping? Edit: forgot to mention I own a Dioder kit from IKEA, would it be possible to use the power supply from that? The label on it says 12V, but only .42A so I doubt it.

Posted by ZachI1 3 years ago

Help me build stadium lighting for my foosball table

I work at a little marketing/web agency.  The job is sweet, but the foosball is epic.  We have internal league games among the 15 of us, but we're going to go intercollegiate this winter and the foosball table need some polish.  I think some epic stadium lights would fit the bill nicely.   Here's some parameters I'd like to work within:  * They should look as close to the real thing as possible - no shortcuts when it comes to the aesthetics (Google images here). * They will probably have to hang from the ceiling. * They should be bright.  Not necessarily blinding, but brighter than average.  Definitely not feeble. * I'm thinking 2 sets hanging above either end of the table and safely above head-height.  That probably puts them about 4-6' away from the surface I want to illuminate. * We can probably spend $40-80 on materials.   * I doubt we will be doing any electrical work to accommodate these, so each one needs to run off a single, probably very long, cord.   The real crux for me here is the lighting - I'm really not familiar with lighting.  I'm sure I'm looking at LED lighting, given that I want to have many lights working from a single power source, but I'm worried that after I spread the available watts out over a large number of lights I won't be able to get the kind of intensity I'm looking for.  And I'm wondering how much I would need to spend on the kind of light that I need for this project.   I'm imagining that the frame of the light will be some kind of small diameter metal conduit.  I'm not sure what the best way of linking the conduit together would be though.. Ideas are warmly welcomed   : )  Cheers, Micah

Posted by sing1ejack 5 years ago

Where to get LEDs in the USA for low cost per led???

Hey everyone, where can i get some LEDs in the USA from a manufacturer? max price per led is 11 cent! please help. kingbright is a little o the higher side. :(

Posted by led235 9 years ago

Suggestion: LED flyies

I've seen LED throwies, LED floaties but not LED flyies. Since I don't yet have my camera and I don't have an interest in throwies but I know a lot of people do... Anyone fancy making an LED flyies instructable? LEDs and button batteries, taped together and taped to the bottom of helium filled balloons. The balloons then tied together with cotton thread to make a mat of flying LEDs! Any takers?

Posted by Jayefuu 9 years ago

Leds To Ac Main 220v ?

Hello i want to build leds that work with ac main 220v i am fond of the leds . i want to glow up one led  with few components with full brightness ? sorry for my english . thanks in advance ?

Posted by malik8801 4 years ago

phenoptix - LEDs, 3mm, 5mm, 10mm, SMD and Superflux

Www.phenoptix.comLEDs, resistors, Kynar wire and many new products coming soon.UK based with fast and low priced shipping worldwide.

Posted by phenoptix 9 years ago

LED Build Night at RevAmp

After having a huge success at our first Build Night at RevAmp and having many people turn up with great projects. The best out of which we found to be LED costumes as many people worked on it. We had two build nights The first day we had projects like LED Cube, LED lamps, LED flashers... and the next day we came up with an idea of making LED costumes and brought arduino into the  picture. The costumes were Bluetooth controlled and we later had a special android app developed to control the led. We had made 3 LED costumes at the end of the day. And we also practiced some cool led dance moves as the LEDs looked quite cool in the dark. After 2 days we all learnt new things and had fun with the LEDs.

Posted by ThisIsSteve 3 years ago

First U.S City To Be Lit With 100% LEDs

"Ann Arbor is on its way to being the first U.S. city to light up its downtown with 100% LED-based streetlights. The city expects to install more than 1,000 LED streetlights beginning next month. The city anticipates a 3.8-year payback on its initial investment."Read More...Kudos to you, Ann Arbor!

Posted by Weissensteinburg 10 years ago

Powering LEDS with mains power.

The idea is to use a voltage divider with high value resistors and then rectify the signal.  Is this dangerous?

Posted by flagrantfouler 8 years ago

LED's on helmet

I was thinking on building a helmet like the ones that are on this video: https://www.youtube.com/watch?v=BgfcToAjfdc I can do the electronics, but I have no idea on where or how to get a helmet similar to the one on the video that has a visor large enough for an LED matrix. If anyone has any ideas, please let me know. Thanks

Posted by Aktzin 3 years ago

100 watt LEDs

Hi there I am wanting to drive 5 100 watt Cool white LEDs at half power total of 250 watts. Each LED spec is 32-34 volts DC @ 3.5 amps. Ideally I would like to drive from one power supply. or 2 at most, any advice would be welcome. please email me at tn21@live.co.uk

Posted by JohnT10 3 years ago

Help with wiring several LEDs and power needed

So I am trying to set up a table with several LEDs (upwards of 50-75) that will almost all be wired with a switch individually, so that patterns can be created by switching on and off each of the LEDs. I know enough as to set up the switches and LEDs, but I am not sure the best way to go about powering it. I want to be able to plug it in to a wall and not use batteries. but what kind of converter/board would I need to power everthing? Thanks

Posted by PUR3insyte 5 years ago


Well, okay... I'm not really desperate but I am in (slight) distress-- needing someone to storm the castle of knowledge to save me from pounding my head against the walls of google-search any longer. Looking for some specific LED information. I have looked through several LED-throw-y Instructables but so far I haven't found the information I need. I am mostly electronics-retarded and so if anyone can give me the correct info I would sincerely appreciate the assistance. I just need to know the batteries/battery power/models needed to power smaller than 10mm LEDs. My project involves a very small space-- 1.8mm-3mm-5mm sized LEDs would probably be best-- I would need to know the kind of batteries I would need (least bulky and least number of batteries I could utilize for each size 1.8mm-3mm-5mm) and how many I would need for each single LED to operate effectively. Also-- is there any real concern of a fire hazard with such LEDs housed in an acrylic/urethane and resin container or would the output of the LED be such that I wouldn't have to have concerns of fire (or melting in the case or urethane/acrylic/resin) ? (Sorry if this question seems dumb, but again I stress how electronics-retarded I really am lol). Furthermore, if the LEDs had vellum or translucent paper covering them to diffuse the light-- would this additionally create any fire-hazard? The housing will probably vary between 14mm-20mm  for the LED with the batteries able to sit outside the LED-housing. I appreciate any assistance in getting the information I need and offer many thanks in advance for any helpful replies!

Posted by pneumadragonfly 8 years ago

What 4.5 million LEDs looks like

Over in Japan, 4.5 millions LEDs have been lit up for a holiday fantasia that runs through March 8. To see all these LEDs color cycling must be amazing to see in person.As a matter of fact, I'll probably be out in Japan next year, but not early enough to catch this.An estimated 4.5 million light-emitting diodes offer an amazing spectacle at the Nabana no Sato theme park in Kuwana, Mie Prefecture, on Saturday. The annual winter light show is scheduled to run until March 8. Kyodo. This year’s theme is flowers. The water illumination is out of this world. Here the beautiful sound of the river with vivid color changing-the-art LED technology enables a production of 64 billion colors. The rapidly changing colors actually look more like the flow of the river in front of our eyes. The pond is located in the heart of the Village but can be seen from all over the place. Link via Gizmodo

Posted by fungus amungus 9 years ago

Rave Helmet Led delima

Okay, so I just finished making my custom rave helmet made of a really sturdy form of geometric origami made out of triangles. kinda hart to explain but I'll post pictures if need be. What I want to do now is wire up Leds to the helmet all over it. My problem is: A: the spacing of the leds would make it impossible  to use a solid led board, I would need to have them wired in some sort of series B: I'm terrible with diy electronics and have never done anything with arduino. I really want to be able to set up the leds in a way that they can be programmed to flash, or light up in a cool way, or react to music. So i figure my best bet is to have some kind of premade Arduino board and power supply that I can buy pre made without having to make my own arduino board because its way too advanced for me. Thats where I fall off, I'm capable of wiring the leds, but anything more advanced than that I'm pretty lost on. Do you guys have any suggestions for products or tutorials to help me out?

Posted by pnkpanther 6 years ago

Arduino on off switch for LEDS

Hi All, I'm about to do a project that involves using Arduino to create an LED 'chase' effect. However I want the 'chase' to be triggered when someone removes an object from the switch. For example the lights would be on and running with a small rock (or similar) holding down a switch which then goes into the off position when the weight is removed. I can create a chase and I can operate the switch but I need help in writing the code that will combine these two features in to one event. Any suggestions, esp help with code will be warmly welcomed. Regards, Frank

Posted by frankhiggins 7 years ago

how to convert to solar?

I recently purchased a normal set of white LED christmas lights for my apartment. But recently I saw similar units that run on solar energy. I was wondering if there was a way to convert the sets that I have into either battery powered or solar powered.

Posted by mrshow555 10 years ago

i need help putting a circut together :P *im some what pathetic*

Ok so i know how every thing works for this. i will play a song and it will be split into 1 a speaker and the other a op amp to get rid of the negitave voltage whitch i feed into a micro controler to tell it what to change the colors of the RBG LED to change to with sertain parts of the song " i will do this cauze electrity gose up and down  so whe  its in middle i could have it green top red bottem blue" and then i will have the micro controler open sertain ground conections to light up the right color the RBG led eill contantly be powered. "im bad with remebering names so sry if icant tell you the name"

Posted by -Tykora- 5 years ago

The Weekly Challenge: LEDs Official Rules

OFFICIAL RULES PLEASE REVIEW THESE OFFICIAL RULES BEFORE ENTERING THE CONTEST. ENTRANTS WHO ARE MINORS: YOU MUST OBTAIN THE CONSENT OF YOUR PARENT OR LEGAL GUARDIAN BEFORE ENTERING THE CONTEST. ENTRY TO THE CONTEST IS FREE AND NO PAYMENT OR PURCHASE IS NECESSARY TO ENTER OR WIN. A PAYMENT OR PURCHASE WILL NOT IMPROVE YOUR CHANCES OF WINNING. VOID WHERE PROHIBITED BY LAW. PLEASE SEE THE INSTRUCTABLES TERMS OF SERVICE AND PRIVACY POLICY SECTION A - SPECIFIC TERMS FOR THIS CONTEST Sponsor. The Instructables The Weekly Challenge: LEDs (the "Contest") is a skill-based contest sponsored by Instructables, Inc., a Delaware corporation ("Sponsor"), in connection with the Instructables.com website (the "Sponsor Site"). The Contest is co-sponsored by the company or companies listed here, if any (each, a "Co-Sponsor"): none. The Contest is governed by these Official Rules (these "Rules"). Overview. The object of the Contest is to make anything using LEDs and share it as an Instructable as specified on the contest page. Eligibility. 1.THE CONTEST IS OPEN ONLY TO NATURAL PERSONS WHO, AT THE TIME OF ENTRY, ARE REGISTERED MEMBERS OF THE SPONSOR SITE, WHO ARE AT LEAST THIRTEEN (13) YEARS OLD, AND ARE LEGAL RESIDENTS OF THE 50 UNITED STATES (INCLUDING THE DISTRICT OF COLUMBIA BUT EXCLUDING PUERTO RICO),  CANADA (EXCLUDING THE PROVINCE OF QUEBEC, CANADA), UNITED KINGDOM, OR AUSTRALIA. 1.If you are a minor, meaning that you are under the age of majority in your jurisdiction (currently 18 or 19 in most U.S. states and provinces of Canada and Australia, and, for the UK, 16 in Scotland and 18 in most other parts of the United Kingdom), you must obtain permission from your parent or legal guardian, and your parent or legal guardian must consent to these Rules as if he or she were an entrant, before you submit an entry.  Sponsor reserves the right to require minors to submit proof of parental/guardian permission and consent to these Rules at any time, without which they may be immediately disqualified from the Contest. Certain individuals are excluded from eligibility to enter or win, as described in Section B below.  No purchase is necessary to enter the Contest. Deadline. The Contest begins at 12:00 a.m. Pacific Time (PT)/8AM GMT on December 5th, 2011 (the "Start Date"). Entries for the Contest must be received by Sponsor by 11:59 p.m. PT on December 11th, 2011 /7:59am GMT on December 12th, 2011 (the "Deadline"). How to Enter. All entries must comply with the entry requirements identified in these Rules (including in this Section and in Section B below), as well as with any specific formatting or content requirements identified in Section A.2 above or on the "How to Enter" page https://www.instructables.com/The-Weekly-Challenge-LEDs/ for the Contest on the Sponsor Site. It is each entrant's responsibility to ensure compliance with those requirements. To enter a new project in the Contest, follow these steps: First document your project in the step-by-step or photo,Instructables format. When your project is ready to be published to the Sponsor Site, visit the Sponsor Site and follow the instructions for publishing your project to the Sponsor Site.  You must be a registered user of the Sponsor Site in order to publish a project to the Sponsor Site. If you are not already a registered user of the Sponsor Site, you will be prompted to create an account on the Sponsor Site during the publication process. Please note: in some jurisdictions, the publication of your project on the Sponsor Site could materially affect rights (e.g., adversely affect patent rights), you may own in the project.  You should make your own inquiries and seek your own advice on this issue. When you have published your project to the Sponsor Site, if you have reviewed the entry requirements for the Contest, believe your project qualifies for entry, and want to enter it in the Contest, leave a comment on the Contest page, and include a link to your published Instructable. Instructable must be published during the Contest period. You may not enter the same Instructables project in more than three (3) Instructables contests in total. Projects published prior to the Start Date are not eligible for entry.  You may not register the same Instructables project in more than three (3) Instructables contests in total. Further information about entry can be found in Section B below. Winner Selection. There can be up to 11 possible winning entries, depending on the number of eligible entries. The winning entries will be selected on or around December 12th, 2011, and Sponsor will announce the winner(s) on or around December 12th, 2011. There must be a minimum of the number of eligible entrants described for each tier listed below for it to be awarded.  Each winner will be awarded only the applicable prize according to the following: Prize(s). Tier #1: If there are at least 5 but no more than 9 eligible entries, the winner will be awarded a prize package including a 1-year Instructables Pro membership, and a Sugru sample pack.  Approximate retail value: $50, £ 32.31; or Tier #2: If there are at least 10 but no more than 24 entries, the winner will be awarded a prize package including a 1-year Instructables Pro membership, a Sugru sample pack, and an Instructables robot t-shirt.  Approximate retail value: $65, £ 42; or Tier #3: If there are at least 25 but no more than 49 entries, the entrant with the highest judges’ score will be awarded a prize package including a Leatherman Juice, a 1-year Instructables Pro membership, a Sugru sample pack, and an Instructables robot t-shirt.  Approximate retail value: $105, £ 67.86.  The entrants with the next 3 highest judges’ scores will each be awarded a prize package including a 1-year Instructables Pro membership, a Sugru sample pack, and an Instructables robot t-shirt.  Approximate retail value of each prize package: $65, £ 42; or Tier #4: If there are at least 50 but no more than 99 entries, the entrant with the highest judges’ score will be awarded a prize package including a Dremel rotary took kit, a 1-year Instructables Pro membership, a Sugru sample pack, and an Instructables robot t-shirt.  Approximate retail value: $165, £ 106.64.  The entrants with the next 5 highest judges’ scores will each be awarded a prize package including a 1-year Instructables Pro membership, a Sugru sample pack, and an Instructables robot t-shirt.  Approximate retail value of each prize package: $65, £ 42; or Tier #5: If there are 100 or more eligible entries, the entrant with the highest judges’ score will be awarded a prize package including an iPad 2, a 1-year Instructables Pro membership, a Sugru sample pack, and an Instructables robot t-shirt.    Approximate retail value: $565, £ 365.15. The entrants with the next 10 highest judges’ scores will each be awarded a prize package including a 1-year Instructables Pro membership, a Sugru sample pack, and an Instructables robot t-shirt.  Approximate retail value of each prize package: $65, £ 42. With respect to any prizes that include any gift cards, pre-paid debit cards,  similar cards, or any other items or services that are subject to third party terms and conditions or restrictions, acceptance and use of the prizes are subject to all eligibility criteria, expiration dates, service or dormancy fees, and all other terms and conditions (if any) imposed by the issuer of such cards, items or services. Neither Sponsor, nor any Co-Sponsor, nor any of their affiliates is the issuer of any such cards, items or services, and none of them are responsible for establishing those terms and conditions, for disclosing or explaining any of those terms and conditions to entrants, or for any winner's failure to comply with any of them.  If a winner does not comply with all of those terms and conditions, the winner may not be able to obtain the maximum value, or any value, from his or her prize. The estimated retail value of all prizes to be awarded in the Contest depends on the number of eligible entries and is between: $50 - $1,215, £ 33.21 - £ 785.24. Judging. 1.Entries will be judged on the basis of the following criteria (the "Criteria"):  relevance, originality, usefulness, simplicity, and clarity of instructions, each of which will be given equal weight.  Entrants will be judged by the Randy Sarafan. Further information on the steps and process of voting and judging can be found in Section B below. Odds of Winning. The odds of winning a prize depend on the number of eligible entries received between the Start Date and the Deadline and the quality of each entry as evaluated by the Judge in the manner described above.  The number of entries received, and the number of winners chosen, in prior contests of Sponsor, including the three (3) most recently completed contests, can be found through the "Contests" page of the Sponsor Site, which can be found here instructables.com/contest.  The number of eligible entries for Sponsor's recently completed contests generally has ranged from approximately two (2) to approximately eighty-three (83), and generally has averaged approximately forty (40), but Sponsor cannot predict or guarantee any specific number of eligible entries for the Contest.   SECTION B - ADDITIONAL TERMS FOR THIS CONTEST General Conditions. By entering the Contest, each entrant agrees to abide by the terms of these Rules and by the decisions of Sponsor and the Judges, which shall be made in all cases in their sole and absolute discretion and are final and binding on all matters relating to the Contest. The Contest is governed by the laws of the State of California and applicable United States federal law, without regard to any conflicts of laws principles. The Contest is void where prohibited by law. The Contest is also governed by Sponsor's Terms of Use, Privacy Policy, and other policies (collectively, the "Policies") pertaining to the Sponsor Site, although the Rules will govern any conflict between the Privacy Policy and the Rules. Exclusions from Eligibility. Employees of Sponsor, any  Co-Sponsor, or their respective parents, subsidiaries, affiliates, partners, suppliers, or advertising or promotional agencies (including without limitation any Judges who are employees of Sponsor, any Co-Sponsor or any of their respective parents,     subsidiaries, or affiliates), as well as members of their households or their immediate families, may submit entries in the Contest, but any such entries are for information and entertainment purposes only and are not eligible to be considered for the purpose of selecting finalists or winners.  Judges who are not employees of Sponsor, any Co-Sponsor or any of their respective parents, subsidiaries, or affiliates, are not eligible to enter or win, nor are members of their households or their immediate families.   Entry. 1.Multiple entries are permitted, but only one entry per entrant can win a prize in the Contest.  Entrants must be registered users of the Sponsor Site to enter the Contest.  Registering for an account with the Sponsor Site may require each entrant to submit entrant's name, e-mail address, age or date of birth, and other details, and in the case of a minor, contact details for a parent or legal guardian for purposes of obtaining proof of parental consent, if Sponsor elects to do so.  Entries can be the work of more than one person, but for purposes of the Contest, each entry will belong to the "Primary Author" named in the entry, regardless of the number of contributors to that entry.  For winning entries, Sponsor will award the applicable prize to the named entrant only, and will not be responsible or liable for apportioning any prize among contributors to a winning entry.  Upon submission, all entries become subject to the Policies (including without limitation the provisions regarding ownership and use of user submissions as stated in the Terms of Use https://www.instructables.com/tos.html).  Entries will not be acknowledged or returned.  Entrants are permitted to modify or update an entry after submission, but are not permitted to do so after the Deadline.  Entries may remain posted on the Contest page of the Sponsor Site indefinitely following the Deadline, but Sponsor reserves the right to delete entries from the Contest page after the Contest ends, in its discretion.  Entries may not be created or submitted through any software-generated, robotic, programmed, script, macro, or other automated method.  Sponsor and Co-Sponsor will have no responsibility for, and will have the right to refuse in its discretion, any entries that have been tampered with, or entries that are misdirected, incomplete, non-conforming, corrupt, lost, late, or ineligible, whether due to Internet or e-mail server failure or otherwise.  Proof of transmission of an entry shall not constitute proof of receipt.  It is each entrant's responsibility to keep Sponsor informed of any changes to entrant's contact or other information during the Contest. Additional Entry Requirements. Each entry must comply in all respects with the Policies, including without limitation all requirements for user submissions, as stated in the Terms of Use https://www.instructables.com/tos.html for the Sponsor Site. Without limiting that requirement, each entry also must comply with the following: Each entry must be entirely the original work of the persons identified in the entry; If persons other than the entrant have contributed to an entry, the entrant must have the permission from each contributor prior to submitting the entry; Entries must not have been published prior to the Start Date; Entries must not have been entered in more than two other previous contests of Sponsor; Entries must not contain anything that is or may be: (i) threatening, harassing, degrading or hateful; (ii) defamatory; (iii) fraudulent or tortious; (iv) obscene, indecent or otherwise objectionable; or (v) protected by copyright, trademark or other proprietary right without the express prior consent of the owner of such right; and Entries must not contain any material that would give rise to criminal or civil liability or that encourages conduct that constitutes a criminal offense. Judging Process. The winner(s) will be determined by the Judges, who will apply the Criteria to evaluate entries. The entries with the highest score(s) will be selected as the winner(s), and the number and type of winners will be as identified in Section A above. The Judges have the right to disqualify any entry that is not in compliance with these Rules, in the Judges' discretion. In the event that a winning entry is disqualified, the next-highest scoring entry will be selected as the alternate winner.  In the event that one or more of the identified Judges is unavailable, Sponsor reserves the right to substitute Judges of comparable qualification, to be determined by Sponsor in its discretion. Prize Terms All values are stated in United States dollars or British Pound Sterling as indicated.  If a stated  prize is unavailable, Sponsor has the right to substitute one or more items of equal or greater value, in its discretion.  No prize is exchangeable, transferable, or redeemable for cash.  The winner(s) will be solely responsible for complying with any and all     applicable statutes, laws (including, without limitation, common law), rules and regulations and for bearing any personal income, VAT, withholding taxes, customs duties, or other taxes, fees,     insurance, surcharges or other costs relating to any prize. THE PRIZE(S) WILL BE GIVEN AWAY BY SPONSOR AND ANY CO-SPONSOR(S) "AS IS."  SPONSOR AND ANY CO-SPONSORS DO NOT MAKE, AND EXPRESSLY DISCLAIM, ANY WARRANTY, WHETHER EXPRESS, IMPLIED, OR STATUTORY, REGARDING ANY PRIZE OR PORTION THEREOF, INCLUDING WITHOUT LIMITATION ANY IMPLIED OR STATUTORY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, OR NON-INFRINGEMENT.  SOME JURISDICTIONS MAY NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES, CONSUMER GUARANTEES AND SIMILAR RIGHTS, IN WHICH CASE SUCH EXCLUSION SHALL APPLY ONLY TO THE EXTENT PERMITTED BY APPLICABLE LAW IN THE RELEVANT JURISDICTION. WITHOUT LIMITATION, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ALL WARRANTIES AND REPRESENTATIONS, IN RELATION TO THE PRIZES, WHETHER EXPRESS OR IMPLIED BY STATUTE, LAW (INCLUDING, WITHOUT LIMITATION, COMMON LAW), RULE, REGULATION OR OTHERWISE, ARE HEREBY EXCLUDED.   Announcement; Award of Prize(s). 1. The winner(s) will be notified by e-mail within seven (7) days of selection.  The winner(s) (and, if a winner is a minor, the winner's parent or legal guardian) may be required to sign a declaration of eligibility and/or publicity and/or liability release form, to the extent not prohibited by law, prior to receipt of a prize.  The winner(s) must take possession of the prize(s) as directed by Sponsor.  The winner(s) may be required to provide Sponsor with a social security or taxpayer identification number for tax purposes.  The winner(s) also may be required to provide Sponsor with proof that he or she is the Authorized Account Holder of the e-mail address associated with the winning entry.  An "Authorized Account Holder" is the natural person who is assigned to an e-mail address by an Internet access provider or other organization responsible for assigning e-mail addresses to the domain associated with an e-mail address.  In the event of a dispute, an entry will be deemed to have been submitted by the Authorized Account Holder of the e-mail address submitted at the time of entry.  Failure to respond to a winner announcement, or return any required declarations or releases within seven (7) days (or any longer time specified by Sponsor) or to comply with any of the foregoing may result in disqualification and the selection of an alternate winner.  It is Sponsor's policy to assist government employees in meeting their obligations under their Standards of Ethical Conduct; any prize(s) won in violation of those Standards should not be accepted and should be returned at Sponsor's expense or destroyed. Representations. 1.By entering the Contest, each entrant represents and warrants that: (a) the entrant meets all eligibility requirements of the Contest; (b) in entering and participating in the Contest, the entrant has complied and will comply in all respects with these Rules and all applicable statutes, laws (including, without limitation, common law), rules and regulations; and (c) the information provided in the entrant's entry, including without limitation all contact information, is true, accurate, and complete in all respects.   Assumption of Risk.  By taking any action to create an entry for the Contest, each entrant, on his or her own behalf and on behalf of his or her personal representatives, heirs, executors, and assigns, acknowledges and agrees that: (a) THERE MAY BE DANGER     AND RISK OF BODILY INJURY, DEATH, OR PROPERTY DAMAGE INVOLVED IN CREATING AN ENTRY; (b) THESE RISKS AND DANGERS MAY ARISE FROM FORESEEABLE OR UNFORESEEABLE CAUSES; (c) SUCH ENTRANT AND HIS OR HER PERSONAL REPRESENTATIVES, HEIRS, EXECUTORS, AND ASSIGNS ASSUME ALL RISKS AND RESPONSIBILITY FOR ANY PERSONAL INJURY, DEATH, PROPERTY DAMAGE, OR OTHER LOSS ARISING OUT OF THE CREATION OF ANY ENTRY, WHETHER CAUSED BY NEGLIGENCE OR ANY OTHER CAUSE; and (d) such entrant and his or her personal representatives, heirs, executors, and assigns are relinquishing any and all rights he, she, or they now have or may have in the future to sue or take any other action against Sponsor, any Co-Sponsor, the prize manufacturers, any other entities involved in the administration of the Contest, each of their respective parents, subsidiaries, and affiliates, and each of their respective officers, directors, employees, agents, and representatives (the “Sponsor Parties”) on the basis of any injury, death, damage, or other loss that may be suffered arising from any action taken in the creation of any entry,     including but not limited to claims based on allegations of negligence by any of the Sponsor Parties.       Release. To the maximum extent permitted by law, by entering the Contest, each entrant releases and holds harmless the Sponsor Parties from any and all responsibility,     liability, damages  (including, without limitation, direct, indirect, incidental, consequential, punitive, statutory, and other damages), losses, costs, or expenses of any kind arising out of or     relating to: (a) entry or participation in the Contest, including but not limited to disputes among individuals claiming to have contributed to any winning entry; (b) any violation by the entrant     of these Rules, the Policies, or applicable laws; (c) misappropriation, infringement, or other violation of any copyright, trademark, patent, trade secret, right of publicity, privacy, or other legal or contractual right of any person attributable to entrant or any entry submitted by entrant; (d) the acceptance, possession, receipt, or use of any prize or any item purchased with any prize (e.g., if the prize includes a gift card); (e) any entries or votes that have been tampered with or that are misdirected, incomplete, non-conforming, corrupt, lost, late, or ineligible; (f)     any problems or technical malfunctions (including but not limited to errors, omissions, interruptions, deletions, defects, or delays in operation or transmission) of any computer, telephone, modem, cable, satellite, network, hardware, online system, server, software, or     other equipment or provider, including any incorrect, incomplete, garbled or jumbled information resulting therefrom; (g) any Internet traffic congestion or website accessibility or delays; (h) printing or typographical errors in any Contest-related materials; or (i) any other technical or human error that may occur in connection with the Contest (the “Causes”).  If anyone makes any claim against any of the Sponsor Parties arising out of or relating to any of the Causes attributable to the entrant, the entrant will pay for any damages, losses, liabilities, costs, penalties, and expenses, including without limitation attorneys’ and experts’ fees and costs, incurred in connection with such claim. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, THE SPONSOR PARTIES SHALL NOT BE LIABLE FOR ANY LOST PROFITS OR ANY SPECIAL, INCIDENTAL, INDIRECT, PUNITIVE, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE CONTEST, HOWSOEVER CAUSED, WHETHER ARISING IN STATUTE, TORT, CONTRACT, OTHER LEGAL THEORY OR OTHERWISE, AND ALL SUCH DAMAGES ARE HEREBY DISCLAIMED AND EXCLUDED.  SOME JURISDICTIONS MAY NOT ALLOW THE LIMITATION OR EXCLUSION OF LIABILITY FOR DAMAGES AND OTHER     LIABILITY (INCLUDING INCIDENTAL OR CONSEQUENTIAL DAMAGES) IN WHICH CASE SUCH LIMITATION OR EXCLUSION SHALL APPLY ONLY TO THE  FULLEST EXTENT PERMITTED BY APPLICABLE LAW, RULE, STATUTE OR REGULATION IN THE RELEVANT JURISDICTION. NOTHING IN THESE TERMS EXCLUDE LIABILITY FOR FRAUD, OR FOR PERSONAL INJURY OR DEATH CAUSED BY NEGLIGENCE TO THE EXTENT SUCH EXCLUSION IS PROHIBITED BY     APPLICABLE LAW.       Misconduct. Sponsor reserves the right, in its discretion, to disqualify any entrant who: (a) tampers with the entry or voting process, the operation of the Contest, the Sponsor     Site, or affiliated websites; (b) acts in an unsporting or disruptive manner, or with intent to annoy or harass another person; (c) is otherwise in violation of these Rules, the Policies, or any     applicable laws; or (d) attempts to subvert the letter and/or spirit of these Rules. SPONSOR RESERVES THE RIGHT TO SEEK DAMAGES FROM ANY SUCH PERSON TO THE FULLEST EXTENT PERMITTED BY LAW.   Termination. 1.Sponsor reserves the right to suspend, modify, or terminate the Contest at any time for any reason, in its discretion, including without limitation in the event of fraud, abuse, tampering, technical, administrative, financial, or other difficulties.  In such cases, Sponsor will post a notice on the Contest page of the Sponsor Site.  Should the Contest terminate prior to selection of the winner, Sponsor will announce an alternate means of awarding the prize on the Contest page of the Sponsor Site.   Advertising. By entering the Contest, each entrant grants to Sponsor the rights to use his or her entry as provided in the Policies, including without limitation the provisions of the Terms of Use https://www.instructables.com/tos.html regarding ownership and use of user submissions.WITHOUT LIMITING THE FOREGOING, TO THE MAXIMUM EXTENT PERMITTED BY LAW, BY ENTERING THE CONTEST, EACH ENTRANT CONSENTS, AND WARRANTS THAT IT HAS OBTAINED THE WRITTEN CONSENT OF EVERY CONTRIBUTOR TO THE ENTRY,  TO THE USE BY SPONSOR, ANY CO-SPONSOR, OR ANY THIRD PARTY CHOSEN BY SPONSOR OR ANY CO-SPONSOR, OF ANY AND ALL INFORMATION, DRAWINGS, TEXT, PHOTOS, VIDEOS, OR OTHER MATERIAL CONTAINED IN AN ENTRY OR OTHERWISE  PROVIDED BY SUCH ENTRANT RELATED TO THE CONTEST, INCLUDING ANY PERSONAL INFORMATION OBTAINED THROUGH THE CONTEST, FOR ADVERTISING, MARKETING OR ANY OTHER PURPOSES NOT PROHIBITED BY LAW. Otherwise, each entrant retains whatever rights it may have in each entry to the extent provided in the Policies.  To the maximum extent permitted by law, by accepting a prize, a winner consents on his or her own behalf and on behalf of any contributor to the entry, to the print and online publication of the winner’s user name, first and last name, address, and winning entry as part of the official winner's list and also to the use of his or her winning entry, first and last name, user name, voice, photograph, biographical material, and likeness by Sponsor, any Co-Sponsor, or any third party chosen by Sponsor or any Co-Sponsor, for advertising,     marketing, and other purposes without additional compensation.      Other than as set forth herein, Sponsor will treat any personal     information supplied by entrants in connection with the Contest in     accordance with Sponsor's Privacy Policy   https://www.instructables.com/about/privacy.jsp. Miscellaneous. 1.Other than for entrants who are U.K. residents, Sponsor, any Co-Sponsor, and each entrant agree to the non-exclusive jurisdiction of an appropriate state court in Marin County, California, or an appropriate federal court located in San Francisco, for any action or proceeding arising out of or related to these Rules, the Contest, or any prize.  For U.K. residents: these Rules are governed by the Laws of England and Wales, and Sponsor, any Co-Sponsor, and each entrant agree to the non-exclusive jurisdiction of the courts in England in connection with any action or proceeding arising out of or related to these Rules, the Contest, or any prize.  By entering the Contest, each entrant submits to the jurisdiction of those courts and waives any objection to those courts, whether on the basis of jurisdiction, venue, inconvenience of the forum, or otherwise.  If any part of these Rules is held by a court of competent jurisdiction to be invalid, illegal, or otherwise unenforceable, such part will be modified by such court to the minimum extent necessary to make it enforceable while preserving to the maximum extent possible the original intent of Sponsor, and the remaining parts of these Rules will remain in full force and effect.  Nothing contained herein or in any of the Contest related materials should be construed as an endorsement by Sponsor of any Co-Sponsor, or of Sponsor or any Co-Sponsor of any third party, product, or service. Winner's List; Mailing List. The user name(s) and entries of the Contest winner(s) will be posted on the Contest page of the Sponsor Site, within thirty (30) days of awarding of all prizes.  In addition, the names of the winner(s) may be obtained by sending a written request and a self-addressed, stamped envelope to the below address (requests must include the words "WINNER'S LIST" and the full name of the Contest prominently in the first line of the address): Instructables 82 2nd St.   San Francisco, California 94105 USA All such requests must be received within six (6) months of the Deadline.  Sponsor's telephone number for Contest purposes is (01-510-473-7626).  Entrants who opt to join Sponsor's electronic mailing list agree to be contacted by email by Sponsor.  Requests for removal from Sponsor's mailing list may be made as instructed in any such email, or by sending a written request and a self-addressed, stamped envelope to "Instructables Mailing List" at the above address, by calling the above telephone number, or as otherwise indicated on the Sponsor Site.  Residents of Vermont may omit return postage on winner's list and mailing list requests.    © 2011 Instructables, Inc. All rights reserved. INSTRUCTABLES is a registered trademark of Instructables, Inc. Other brands may be trademarks of their respective owners.

Posted by randofo 6 years ago

Simple Resistance Question

I am wiring some LEDs in series-parallel using a 9v battery. The schematic I've been looking at online as a reference shows resistors being used but doesn't say what size. Here is the layout: |-- LED -- LED -- LED -- resistor?--| |-- LED -- LED -- LED -- resistor?--| |-- LED -- LED -- LED -- resistor?--| |--9v-----------------------------------------| I assume it's a simple calculation but I haven't worked with this stuff in a few years. Thanks in advance.

Posted by L3fty 6 years ago