cheap LEDs (even UV)

[Starfoxer]

the guy that sells all of the DIY CCFL's and LEDS over
at the.......[H] :rolleyes: has finally got himself a
website.

beats paying 10$ for an LED when you can have them for
50 pennies!

http://www.exabytesystems.com

oh, and shipping is only like $0.50 or $1.00 for LEDs
so it won't kill ya there.

peace!

[Serraph]

Nice find! I was just looking for a place to buy some too. Picking up some rocker switches, led holders, leds, and cable tie mounts for my dual CC's.

BTW what does reverse voltage and angle mean?

[Starfoxer]

i really have no idea, send an e-mail to the guy, he responds pretty quick

[macklin01]

reverse voltage is the voltage necessary for a diode to conduct electricty in the wrong direction. (and most likely damage the diode.) An LED is one such example.

An interesting variant is the Zener diode, which is designed to conduct at that reverse voltage.

As for angle, hmmmm , that's probably the largest angle from head-on that you can really see the LED light up in any appreciable way.

-- Paul

[Serraph]

Ok thanks. I e-mailed him asking what the operating voltage and current that the LED's are supposed to run at. I'll post them here once I get an answer.

[macklin01]

That's a really great question. Generally, the voltage depends upon the color, but as for current, that's another matter. Nice website, btw! -- Paul

[Serraph]

He replied but he said he doesn't know what the voltage/current is. :(

[macklin01]

Well, if he has units loose, he can use a diode checker on a multimeter to find the voltage drop, and that will be that figure. As for current, that's anybody's guess .... but usually, it's on the order of 10's of mA.

-- Paul

[WyrmMaster]

Very nice, thats a sweet deal.

[Miknow]

Do they have the leds for the digidoc mod?

[RobStyle]

The guy selling the led's is a good seller.
I bought 40 led's from him just a few months ago, shipping was $3.20 or less.

[rivercom9]

Does anyone know what size I have to get for replacing the LEDs on my Dragon case? Also, do I have to add resistors in order to keep them from burning out or anything?

[obliv]

without knowing the voltage/current u wont know what resistor to impliment, boo!

[macklin01]

You'll most probably need resistors. Do you have a multimeter? If so, you can do two things when you get your LED's:

1) Use the diode measurement tool to measure the voltage drop across the LED. This should be the minimal voltage that will be necessary to light it.

2) Apply that amount of voltage to the LED. (Say, if you measure 2.7V in part 1, then just use 2 AA batteries for 3V.) Splice in the multimeter to measure the current at that voltage level.

Calculation: Suppose that Vled was the voltage you measured in 1, and Iled was the current you measured. Suppose you want to hook your LED up to a voltage of value Vcc. (ex, Vcc = 12V or 5V)

Then you need to put a resistor before or after the LED, of value

R = (Vcc - Vled) / Iled.

If you want a greater current through the LED (to make it light up brighter), increase Iled. -- Paul

[WyrmMaster]

The blue ones are all 5v, so you can hook them up to the 5v line on your power supply with no resistors.

They dont have the ones for the dd5, but im actually thinking of replacing the ones i bought for the dd5 with some normal ones (2 per side) because these that i have are kinda aqua not blue. Il let you guys know how it looks, it would certainly be cheaper with this deal.

[Rezman5]

I know this guy personally, great dude. He helped me get into computing and is a senior at my high school and in one of my classes. He has great prices, to bad he wont cut me a deal :( Happy buying everyone!

[krm197]

Bought one of each with holders from him. Nice FAST email response when there was a problem with the order. Good prices too.

[roberttran]

I'm glad you like the site and prices.
Also thanks for the idea of testing the led's, I'm going to see if my multimeter can do that. Any idea that the symbol on the multimeter is? I am a n00b to electronics :D

[Serraph]

Are you talking about the horseshoe symbol? If so, that's the symbol for resistance in Ohms. Not sure if you know of this site or not but here's some basics of electric circuits. http://hw.metku.net/index.html?sect=view&n=1&path=mods/sahkooppi/index_eng

[macklin01]

The symbol you'll want to see for the diode checker is this:

http://www.math.umn.edu/~macklin/images/ocforum/diode.bmp

-- Paul

[Starfoxer]

Originally posted by roberttran
I'm glad you like the site and prices.
Also thanks for the idea of testing the led's, I'm going to see if my multimeter can do that. Any idea that the symbol on the multimeter is? I am a n00b to electronics :D


and in case yall didn't know, roberttran runs this site :p

[WyrmMaster]

I just got my order, 25 3mm and 7 5mm (i just couldnt resist, they were so cheap...

I did my keyboard (these things dang near blinded me :), my mouse, and i replaced one of the leds in my DD5. (I had previously done it with the 'real' leds, but they arent really blue. Well i left one of them, replaced the other with a single 3mm, and it looks sweet. It lights it up very well, and it looks really BLUE now. I highly recommend everyone skip the edgelight leds and just get a pair of these, they work great.

[macklin01]

Great to hear! Can ya' post a pic of that KB? -- Paul

[AC Slater]

Nice deal here. These LED's can have several uses, not just for my computers. I think I'll put them in my truck for my alarm.

[WyrmMaster]

Originally posted by macklin01
Great to hear! Can ya' post a pic of that KB? -- Paul

Howabout i post some pics in alt. modding. Might not get them up till tomorrow though.

[macklin01]

Sounds great! I'll look forward to them. ;) -- Paul

[OCn00b]

out of curiosity, and I may be overlooking it, but what kind of connectors do the 3mm and 5mm LED's have?

[WyrmMaster]

Bare leads only, you need to solder them on/in.

[kelvinblade]

i want to change the power/hdd light for my lian li case.
which ones do i need to get? the 5mm ones or the 3mm ones?
anyone know?

[Starfoxer]

looks like he got some new stuff in, i may get a mini CCFL for my PS2 :)

[roberttran]

I just dropped all the prices on the CCFL kits

[roberttran]

I may also get 3mm UV LEDs to sell.
What do you guys think about that?

[cryogen97]

ooo, 3mm UV LEDs would be awesome.

Just wanted to say that you are my new best friend for having all these LEDs for so cheap. I've already gotten my second order from you. I'm finding all the places I can to put these in.

[roberttran]

plz buy more :D

[roberttran]

I have some new 3mm red led's and 9000mcd white led's

[poluga]

Does it hurt to change the red led in logitech mices? What is a good surface for uv leds? Do you need special paint?

[roberttran]

It doesnt hurt the mouse if done properly. UV light only reacts with certain surfaces that were made to react.