Added: 3 years ago
From: oskay
Views: 583,359
Sort by time | Sort by thread (beta)

Link to this comment:

Share to:
see all

All Comments (249)

Sign In or Sign Up now to post a comment!
  • We put L.E.D. LIGHTS on our HexBugs. Have a look

  • @HexB2012 We are *really* not interested in hexbugs.

  • I wish you didn't have the annoying background music on your video!

  • How long will this run before draining the battery?

  • i think i need sunglasses. Too bright :D thoo its good

  • OMG is that simple!! :D

    

  • Comment removed

  • nice one

  • show de  bola..........................­.

  • At first, i have to admit, i didnt think it would work very well. But WOW, that's quite good!

  • are you in finland someking news sound on background?

  • "Tony Stark built this IN A CAVE!"

  • @Lomotilian yea

  • @Lomotilian I'm not Tony Stark...

    

  • stupid, this can make a children!

  • @tasicss how you can do a children with High-power LED blinking circuit, D. thats sick xD

  • I think you have gone too far with your evil plan this time. You will never get away with it.

  • and this is usefull for...?

  • I bought a heater and plugged it in my power cable. The power cable's led light suddenly started blinking like crazy and then just faded away. I turned the thing off and unplugged it. What did the flickering mean? Help somebody!

  • This is the idiot's way to flash an LED. It's used by those that don't know enough about electronics.

    This is a really bad way to flash an LED: one of the key advantages of LEDs is their low power, yet here you are using an incandescent bulb so you've lost that energy saving benefit! Totally mad way to do it.

  • @HHRich O RLY? You have no idea how much I do or don't know about electronics. And, I don't think that anyone "uses" this circuit-- it's just a demo of a really cheap way to blink a high power LED.

    I've got an exercise for you: Calculate exactly how much energy you save in this circuit by using a fixed load resistor instead of the light bulb. Gee, zero? Do you need me to call you an idiot too?

  • @oskay

    You measure the voltage across the LED when it's on, and measure the voltage across the bulb when the LED is on, then break the circuit and measure the current when the LED is on, and I'll calculate the energy lost by using the filament bulb instead of a resistor.

    Then I'll carry out a Fourier Transform of the voltage waveform over a full cycle and plot a frequency spectrum of the waveform.

    Did I forget to tell you I have a BEng(hons) in Electronic Engineering?

  • @HHRich You're dodging the question. Energy lost is energy lost, whether it's to heat or light. I'm glad that your degree is in EE. I was guessing that it was in watching fetish videos. :P

  • @oskay

    How dare you be so crass. You asked me how to calculate the energy lost by the light bulb. I answered your question by telling you to provide me with the actual voltages and currents and I can work it out! What other way is there to calculate the energy lost?

    Energy is lost in two ways: by heating effect and by emission of light.

    If you want me to start throwing equations for you as to how LEDs work, I bloody well will. Don't challenge me on this man!

  • @HHRich It doesn't matter what the mechanism for loss is; if you drop that voltage w/o using a switcher, there's still energy lost there. You were calling me -- or maybe this -- idiotic in the same breath as telling someone else to use a resistor but to watch the power rating. You know perfectly well that there's no difference.

    You had no need to pull rank (er, degree) with me-- I know as much about radiative recombination as the next guy.

  • @oskay

    In incandescent bulbs most of the electrical energy is converted into light, the filament has to get white hot in order to glow and radiate light. The production of heat is a fundamental part of generating light in a tungsten bulb.

    In LEDs, most of the energy is converted into light, they are far more efficient at converting the electrical energy into light.

    In LEDs light is generated by the extrinsic carrier recombination as the electrons fall through various energy levels

  • @HHRich

    In the case of silicon based devices (which LEDs generally are not, they tend to use 3-5 semi-conductor compounds), the band gap between the conduction band and valence band is 1.1 electron volts, and it is this by the formula E=hf where h is planks constant, which determnines the wavelength of light emitted.

    The recombination of electrons as they fall from the conduction band and combine with holes in the valence band leads to the emission of a photo of light.

  • @HHRich "The recombination of electrons as they fall from the conduction band and combine with holes in the valence band leads to the emission of a photo of light."

    Geez, what's next-- gonna tell me how a BJT works?

  • @HHRich

    I misread what you typed. There is a bit of a difference. In principle I agree with what you are saying. The energy needs to be disipated, I agree.

    but, in the bulbs case you have no control and probably do not even know what the resistance is. If you design the circuit properly using Ohms law, which you haven't done, then you set the resistance.

    I agree, there is no difference if a light bulb has a resistance of X ohms, and a resistor of X ohms,

  • @HHRich

    >If you design the circuit properly using Ohms law, which you haven't done, then you set the resistance.

    Yup. Not too critical here-- just wanted to run the fat LED from 3 AAAs. As you said, it's not like lightbulbs are anywhere near ohmic anyway.

  • @HHRich I'd say "yes and *duh*" but I think it's more correct to describe the majority of energy dissipated by an incandescent bulb as heat rather than "light."

    My point is that a light bulb is another kind of lossy load resistor.

    Your point is that my load resistor puts out fewer lumen/watt than an LED? This is supposed to be news?

  • @HHRich i know you meant HEAT not light with tungsten..lol

  • @oskay

    And I didn't call you an idiot, I said it was an idiots way to flash an LED bulb, and it is.

    It's ok to flash an LED like this purely as a bit of fun, but for real practical use, forget it.

  • @oskay

    The problem with this 'design' is that you have no control over the resistance, in fact, the resistance of the light bulb will change as it goes from cold to hot, so the current being pushed through the LED will vary, how can you be sure that you're not exceeding the maximum current for the LED and thus not shortening its life?

    As I said, this method is ok for a bit of fun, but that's all.

  • i did a blinking one in my electronics class for MUCH less. My own parts too. Was pretty complex though.

  • @runforcoverfire For MUCH less? Really? One of these bulbs costs about ten cents. Did you save a whole nine cents or something?

  • @oskay Well, when you get a lot of computer stuff for free....

  • @runforcoverfire And it was much bigger. All my own parts, from stuff i took apart.

  • is that an ultra bright led there?

    Q: i have a 3mm 3v led, what resistor would i need to connect to a 12vdc?

  • @saschiver around a 470 to a 1k would work fine. 12v with a 3v drop leaves 9v. I=V/R. 9/470= 19mA. 9/1k= 9mA.

  • @saschiver

    To answer that question you need to know how much current you can, how much you want to push through the LED. Each LED has it's own maximum current rating which you should not exceed.

    If you can find out the current, the calculation is simple:

    R= (12-3)/ Current

    so the resistor you need is: 9 divided by the current value.

    You also need to take into consideration the power rating of the resistor, chose the right power rating otherwise it will get hot and burn out.

  • Those are good for bikes lol

  • iv done simpler cell phone battery and blinking led :^P well i think you way is better the led i found was small and i think it wasn't supposed to blink to little power to much power or something about the cell phone battery lol good job

  • Thank You For Supporting Our Product The Accu-Text ™

  • Your vids are amazing, I just subscribed!

  • stupid circuit man

  • Very simple and effective. Job well done.

    Thanks for posting.

  • why do we see that line across the screen when the light is on?

    Anyone knows?

  • So awesome.. I'm gonna steal all my dad's stuff and make this!

    And yeah woah was it painfully bright! Even through the screen :|

  • i have the same led these are fuckin awesome leds

  • bulb! :D

  • That's mega cool. Love the super-simple idea!

  • how does this thing u attached the led called?

  • im guessing it's a bread board, but i could be wrong.

  • Prototype Board

  • i personaly think that a astable multivibrator with powertransistors is simpler and more reliable, partialy because of the more common components but anyways good vid, 5*

  • Multivibrator based completly on rezistivity? I dont really think that christmas bulb turn off when its overheated... I agree with tHaH4x0r, there is clasic multivibrator hiden among batteries or so.

  • @S0RREN

    If you really want sophistication, and possibly even fewer component count, use a PIC microcontroller and then you can have multiple LEDs and flash them in whatever sequence you want

  • That was the cylon pumpkin; Youtube video o5nkDPBOp2k

  • you are an imitation of KIPKAY???

  • Kip is a friend of mine, and has even done a video for Make showing one of my projects. I don't think that either of us is imitating the other.

  • ok i´m so sorry...

  • NE555....

  • > NE555

    Missing the point? Yes, you *can* use a 555, two resistors, a capacitor, a transistor, and a load resistor, or you can just use one light bulb.

  • @oskay

    i think an ne555, two resistors..... are easier to buy than a blinking light bulb, they need less space, less energy ;D, oscilate more excatly, live longer....

  • About half right. Easier to buy? No. Any grocery store has blinking light bulbs at christmastime. Less space? No, the 555 and its components are larger. Less energy? No, the 555 is an energy hog. Even if it were perfectly efficient, you'd still drop the same voltage across a resistor and/or transistor to drive the LED (depending on your chosen operating point), so it would never use *less* energy. Oscillate more exactly and live longer? Yes on those two.

  • @oskay go to radioshack

  • @zker666 I've been to radio shack. What a worthless place it's become.

  • @oskay It's called The Source here in Canada now. The entire franchise has gone to shit since the early 2000s.

  • @oskay radio shack was so cool when it first came out, but now its just a commercail garbage store

  • @oskay agreed! I just bought leds from china.

  • @oskay The actual store's worthless, but not the website. You can get anything you need there.

  • too super!!! my project ->youtube.com/watch?v=y3dfc3ob­Jo8

  • @oskay It went bankrupt in the UK about 10 years ago. It was called TANDY over here as Radio Shack is already a UK registered company name, so they were not allowed to use it. Carphone Warehouse bought all their shops and now use them. TANDY is no more! another way to flash the LED is with a car electronic flasher unit driving a relay, or a 555 timer driving a suitable transistor.

  • @oskay It went bankrupt in the UK some years ago, it traded under the name TANDY as there was also a Radio Shack registered as a company in the UK at the time during the late 70's. They were overpriced towards the end and customers avoided them, so all the shops were sold to Carphone Warehouse for £1, including the company debts that had to be paid off. It's a shame Tandy/RadioShack lost their way and didn't sell what the customer wanted. They got greedy and paid the price in the end...

  • ....Or a flip-flop, though true that this one is really simple.

  • @oskay

    When I was around 10 years old, I used an LM3909 chip, but it wouldn't have the drive capability for high brightness LEDs, not directly anyway.

  • @HHRich Too bad those went away. Still more than ten cents, though. I haven't used those "self blinking" LEDs. I wonder if you could use this kind of trick with them to blink other LEDs in series.

  • i dont know whats that but i like that stuff

  • lol i understood but i dont hav the right things to make

  • you can buy led's with blinking feature already built into them.

  • thats good yaar! very simple, but little hard to make it!..... good :)

  • nice!

  • don't most LED's need some sort of resistor, to adjust the current? or does the light bulb do this job?

  • @ekstc

    In the video, the current limiting is being provided by the light bulb, it has a filament which has resistance. It's a really naff way to do it.

    Yes, you are correct, you set the current through an LED by using the appropriate value resistor.

  • Noob, Learn to IC-555 timer chip

  • Why? This is much easier to build, and illustrates the point of a relaxation oscillator perfectly well.

  • Noob, l2 use no timer.

  • @preempted your the noob real moders know u dont need the fancy stuff to make a curcuit

  • good idea

  • what are u using can u like give me the list? thanks

  • have you played with a gravity emitting diode yet

  • i would like to put an LED green light in my basketball shoes, like on the bottom where you see that clear stuff

    would you know how to do this?

  • ey what the gold thing not the board that the eld is connected to that?? and is that that is making the eld es on and off? thanks

  • The Christmas light bulb is making the LED turn on and off. It's the bulb that you put into a string of Christmas lights to make the whole set blink.

  • heatsink

    it cools down the led

  • What would I use it for?

  • absolutely anything you want to blink XD

  • wow....look at the lens flare...omg so powerful led

  • cool

  • How much time it keeps blinking until the batteries run out of charge? Thanks

  • use a wallwart, then the answer is never! LOL

  • nice

  • GOD! That hurt through the screen! Nice video!

  • i so agree

  • Ahhh.... its burning into my brain...

    i love it

  • Saw that again but im still alive..wtf:S? Change some options doesnt works fine to me:(

  • If you get enough Luxeun K2 LED boards, you can easily create a car NEON lol

  • what for?to enlight your bedroom?that would be roamantic as fuck!

  • Haha YEAH!! XD

  • dont you just love 555 chips and transistors!

  • lol xD

  • It's not a 555 chip. ;)

  • lol

  • thanks

  • hey even mexicans have chain mail

  • only 2 videos? that's pretty lame!

  • OK, I have now made the high powered Blue light LED blinking gismo...........

    what do I now use it for ....?

  • if you connect like five 9 volt batteries to a single LED it spays shards of molten plastic everywhere lol

  • Or 100000V vaporising a spanner!

  • its a fun age we live in lol

  • wrong!

    it will transfer you directly to the future!

  • reading your name i dont belive you

  • something wrong with my name?should i nickname myself with something like "Einstein", or so?or don´t you just understand this single german word?

  • I is got some chronological researchins to do lol

  • now thats my kinda experiment..;O

  • This rocks! I have been wondering how to make simple blinking lights for my RC helicopter and this will work very well. Now I just need to buy a blinking LED and hook it up with my other LED in series. No trying to figure out what resistors to get and all that. THANKS!

  • dude im a real novice who needs help i just bought some leds 2 try 2 make somethin like what u got there but dont know how all i have is the 3.v leds and aa batteries help needed

  • Get a resistor first, about 100Ohms at least, Brown Black brown are the stripe colors of it, that will ensure that you do not burn out the LEDs

  • cool

  • This is NOT the simplest blinking led circut.

    Just use a blinking LED and battery.

  • Makes sense.

  • those stupid blinking bulbs burn out in 1/1000th the time of led does.

  • THEY SELL BLINKING LEDS?

  • it`s not a blinking led, this led is triggered on when the copper cools down and off when it heats up.

  • yes, but this isn't one of them.

  • it is coz he even says this

  • How do you limit the current to prevent the LED from burning?

  • Isn't it prevented by the christmaslight bulb?

  • The chrismas lightbulb acts as a resistor in this circuit, as it is a simple thin tungsten wire with its own resistance

  • Thats hella bright. Where can i buy these leds

  • ebay

  • where can be use this thing????

  • The easiest way is byu blinking LED :P

  • pretty funny Only that they climb up walls and are able to get to that roof...

  • Good Video, FYI. I am useing this to demonstate how Red light cameras are issueing bogus ticket when the city mantainace crews replace only the red and green bulbs which burn out more quickly. The net effect is a shortening of the yellow cycle. The majority of tickets now being issued are in fact within that delay!

  • nice idea, not realy efficient (around 55%), but very simple and cheap! u use your brain!

    Thanks for the idea

    5/5 stars

  • Agreed, I never thought of doin it that way :)

  • i don't see a resister. are you running that LED at 6 volts? that should have at least 1.5 ohm 5 watt resister on there ^^ unless that is acquired though the xmas light

  • The bulb is the resistOr, which has a smaller resistance when it is cold. When the filament gets hot, its resistance is high enough to swich off the LED. Since now there is no current in the circuit, the filament will cool down, until the LED will switch on again.

  • No.

  • power +

    condensator

    LED

    relay

    power -

    , makes it flash on instant ;)

  • Yeah, much easier!

    Condensator? Capacitor!

  • Oh sorry, i mean the battery like thing that has some sort of filler -as soon as the power goes down, it releases all the current held-

    I dont know the english name for it o.O

  • is that UV?

  • its called a capicitor

  • can i use a regular LED?

  • definitly other ways to make an LED flash but thats one ive naver seen befor!

  • Just use a relais, mutch easyer

  • These comments are ridiculous. Where did this guy ever say this was the most practical way to flash an LED in any possible application? Can't you just appreciate it for what it is? I like it just because I've never seen it done before.

  • nice Gb music hehe

  • sortalike a 555 timer curcuit

  • lol. no. not really.

  • Hmm, thats a clever way to exploit the x-mas bulb =D