Resource for LEDs
Can someone please give me a resource to a place to buy LEDs? I really want some to learn how to work with them.
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Here is a good place to buy leds from. They arent overly bright but they are cheap.
Jun 21, 2009. 12:28 AMatx512
says:
Hi there Guys, I have a project that i like to do , i kinda have a clue ..
but i need help in understanding how it works ,
i,m trying to find a power supply for a 800 or 500 led
that i want to make i believe it going to be in parallel
this is the spec for the led
5mm (T1-3/4) LED. Transparent, Non diffused case. 660nM, 690mCd Min. output. Max forward current 20mA continuous. Max Forward Drop: 2.0V, Max reverse Voltage =5VDC.
1" leads
and the next is find the right resistors , does all the led need a resistor parallel?
thanks for your help ..
but i need help in understanding how it works ,
i,m trying to find a power supply for a 800 or 500 led
that i want to make i believe it going to be in parallel
this is the spec for the led
5mm (T1-3/4) LED. Transparent, Non diffused case. 660nM, 690mCd Min. output. Max forward current 20mA continuous. Max Forward Drop: 2.0V, Max reverse Voltage =5VDC.
1" leads
and the next is find the right resistors , does all the led need a resistor parallel?
thanks for your help ..
Jun 30, 2009. 8:07 PMalex-sharetskiy
says:
Jun 9, 2009. 2:54 PMmegatechnical
says:
Hi all, I'm working on some LED projects thanks to all the great instructables found here. One i'm working on now is a simple sign. But i'm wondering about the design and colors. Can anyone recommend software to help me visualize my design? Or do i just need to use photoshop or something like it.
Although Irfanview is a little more basic, I have used it also along with Gimp for quick changes.
Jun 10, 2009. 7:25 AMphenoptix
says:
Google sketchup is pretty useful, it's free too. You can find it here http://sketchup.google.com/
WOW! thanks guys/girls that all replied that is amazing! (especially how many people replied!)
May 21, 2009. 12:10 PMblard
says:
you can get them for 86 cents at http://www.maplin.co.uk/free_uk_delivery/5mm_Yellow_LED_-11201/5mm_Yellow_LED_-11201.htm
Jun 19, 2009. 3:59 PMjunits15
says:
well if you only need like 1 or 2 then radioshack, but if you need mor an online supplier is best.
Jun 16, 2009. 2:12 AMght-LEDdisplay
says:
wow,LED are rapidly use in many fields recently. But different parameters has different usage. So you need make clear that which parameter do you want? Basic parameters Chip:cree,silan,AXT,taiwan etc Type: round,oval,hat,square,etc Color:Red,blue,gree,yellow,etc Wave length: it depends on the color,or it decide the color you want; etc. Wish you good luck
Check ebay - http://tinyurl.com/ou34pc.
I found packs of 100, any color - $5.99 shipping included. Some even include resistors as well.
I've ordered from one of these dealers before and was not disappointed.
I found packs of 100, any color - $5.99 shipping included. Some even include resistors as well.
I've ordered from one of these dealers before and was not disappointed.
May 21, 2009. 12:08 PMblard
says:
I no were you can get them at for only 86 cents if you want them thin I will give you the website
Jun 4, 2009. 8:59 AMnodnodwinkwink
says:
if you dont want to pay take apart dead electronic equiment and rip the leds out of them, since the stuff is broken, theres no need to be gentle!
Jun 1, 2009. 10:06 PMtjt_1978
says:
Awesomeness...I've been looking for a place to get stuff like this from for a while. Thanks to everyone who posted information and thanks to the person who started this thread.
For a supplier, we have our very own - Phenoptix runs a business supplying LEDs from his garden shed.
May 30, 2009. 8:22 AMphenoptix
says:
Thanks for the plug! It's all about the sheds by the way...
When I got my shed, and started using it properly, I invented a new term - shedly. I go outside to do shedly things.
May 18, 2009. 4:22 AMsolo.card
says:
Thanks Kiteman, I've been after a UK supplier that isn't Maplin! The problem with most of these is you need to buy in larger quantities! I only want 5 LEDS!!!
Jun 9, 2009. 2:13 PMthecookiemonster
says:
rapid eletronics are in the uk as well and are very cheap!!! you can buy them in any quantity you want and my orders arrived in 2 days!!! ( btw i do not work for rapid) i personally think maplin is a ripoff and they dont have such a great selection!!!!
May 26, 2009. 9:50 AMMr. Thumbs
says:
A partial list from Model Railroader Magazine. All but one are in the United States. Prices vary. Many carry more than LEDs. Company name then address. All Electronics - www.allelectronics.com Circuitron - www.circuitron.com Evan Designs - www.modeltrainsoftware.com Gebr. Faller GmbH - www.faller.de Ngineering - www.ngineering.com Parts Express - www.parts-express.com Ram Track - www.ramrcandramtrack.com Scale Shops - scaleshops.com
May 23, 2009. 11:49 PMGizmoGuy
says:
Another place to get LED's in the states is http://www.SurplusGizmos.com
Lots of other nifty stuff as well from ultrasonic sensors to industrial parts and everything in between.
Mike <><
Lots of other nifty stuff as well from ultrasonic sensors to industrial parts and everything in between.
Mike <><
May 22, 2009. 10:00 AMptacnik
says:
8000mcd 5mm Red LED Quantity : 1000pcs price: $25.00 from the LEDsoppe.com
I got a nice assortment of red, yellow, orange, green and even 4 ir ones from http://www.jameco.com it was one of their student grab bags they sell, 100 assorted for $7.95 US, they have a nice grab bag for LED displays also. I now have more LEDs than I have projects for em, though I did buy 100 bright white from an ebay store so I can make some solar garden lights all one color.
May 15, 2009. 6:47 PMRadioactive_Legos
says:
Yes! Jameco is a great place to get LEDs if you know what you want.
15 Crazy Bucks for a 5 Pack,Thats Insane Madness.Big Time.
May 19, 2009. 6:36 AMC7mb
says:
LEDshoppe is cheap for getting 100 or more LEDs. But I use Oznium.com for just a few (35 or so).
May 18, 2009. 1:26 PMRedfox888888
says:
the only thing that stinks about it is that your order has to be above $10, even if it's at $9.95.
Oh WOW! that really cheap! Its just I won't pay the shipping :(
Try ledshoppe.com. Cheap LEDs (100 for $6) and free shipping on all orders worldwide. Also use 5lsr as a promo code for a free laser.
May 16, 2009. 9:35 AM-henry-
says:
I second that! 100 of any color LEDs for $6 The shipping is free, but it's from Hong Kong. They also sell other things
May 17, 2009. 3:48 PMDoctor What
says:
I just checked out that site. It is amazing! Huzzah for poor website design and amazing deals! I'm placing an order tonight.
I just always get nervous buying from those sorts of sites. Any word on the speed of orders from there?
it takes a while, I just got my order 2 days ago and I ordered it on 4/30. But it's worth the free shipping and cheap prices.
May 17, 2009. 6:06 PM-henry-
says:
It's true, the shipping is incredibly slow, but it's from across the country, so that makes sense.
May 17, 2009. 6:39 PM-henry-
says:
Oops. I wrote that in a hurry, and no, I don't live in China (I live in California).
Yeah, I haven't found anywhere else that can match the prices.
May 17, 2009. 1:11 PMthetech101
says:
www.allelectronics.com Shipping is $7 US for any quantity of LEDs and resistors.
May 16, 2009. 8:05 PMPKTraceur
says:
Try getting them out of old disposable camera circuits. Then you get a enjoyable shock, if it's charged, and a capcitor, switch, etc...
-PKT
-PKT
Try Radio Shack, or get them out of a cheap toy, You'll need resistors too.
Resistors allow only the right voltage to enter the LED, if you have a 3v LED powered by 2 new AA Battery's then the LED will burn out, resistors stop that. (Remember that the resistor always goes on the positive terminal)
May 14, 2009. 11:20 PMtravis7s
says:
Specifically the resistor will limit the current going through the LED. You will need specific resistor values depending on your setup. There are some http://ledcalculator.net/ that can help you with that.
You can buy LEDs (radio shack) with resistors built in that usually run off 5 or 12v too if you want.
AllElectronics has a good selection of things for tinkerers too.
You can buy LEDs (radio shack) with resistors built in that usually run off 5 or 12v too if you want.
AllElectronics has a good selection of things for tinkerers too.
Jun 3, 2009. 10:12 AMEntropy512
says:
Batteries have a characteristic known as "internal impedance", which can be most simply described as a resistor internal to the battery. Battery internal impedance depends on battery size, physical construction, and chemistry. The size, physical construction, and chemistry of button cells leads to them having high internal resistance - i.e. the resistor you need for typical 5mm LEDs is basically built into typical 3V button cells. Larger batteries with different construction/chemistries will have much lower internal impedance and require a resistor.
Yeah when i use button cells i dont use resistors, works fine!
It depends upon the cell and the LED. It is usually best to limit current to preserve the LED for long service. Works well for an hour and the dies, is when you start thinking "maybe I should have?" L
May 15, 2009. 1:10 PMthepelton
says:
The power consumption of the led's or resistors has to equal the power coming out of the battery, or you will overburden your LED. Therefore, if the battery is 9 volt, and your LED uses 1.5, you have to either put 6 LED's in a row, or put in a resistor equal to those other five LED's.
Yes, I am familiar with these things. Not too sure what you're saying to me? L
May 16, 2009. 10:55 AMthepelton
says:
I was just trying to answer why resistors are needed in a circuit with a battery that has a larger output than that for which the LED is rated.
Sorry - you were adding to the discussion rather than telling me something specifically, yes I see it. Thanks L
Look up "light emitting diode" in Wikipedia, and read about them. Then look up "resistor".
May 17, 2009. 3:47 PMDoctor What
says:
But he is looking for a reliable site that has been tested from other makers. A question that only a person can answer.
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