Motherboard placement

CliffyBiro · 3 Apr 2008 at 16:23

OK I've bought 10 Superbright 3mm LEDs with 470ohm resistors along with 10 3mm led clips.

Around £4 for all.

PhillyDee · 3 Apr 2008 at 16:25

http://led.linear1.org/

You might find that useful.

CliffyBiro · 3 Apr 2008 at 16:51

So if I use, say, 8 leds, how should I connect them both together and to the molex plug and what resistors should I use?

V|per · 3 Apr 2008 at 17:05

8 led's, 4 in series, and then another 4 in series, both sets of 4 connected in parallel. that should be 12v per series, which should equal 3v per led...

Been nearly 10 years since i leanrt that though, so don't quote me on it :eek:

CliffyBiro · 3 Apr 2008 at 17:08

Any chance of a diagram? lol

bcjames · 3 Apr 2008 at 18:39

I think that means:

[Edit: remaking bad diagram!]

Excuse my crude diagram. Hopefully someone can confirm.

V|per · 3 Apr 2008 at 22:06

Paint For the win...

Not sure how to connect it to the molex though.

I'm not 100% on this, as like i say, it was a fair few years ago when i was at school.. this is all from memory. you may need to connect them all in series and have resistors soldered on in some places, there are a multitude of different ways to connect the LED's up.

Enjoy

EDIT: it's wrong, and the wires would go into a 12v and a ground on the molex (yellow and black respectively...) - This only applies if you are using 4 led's in series though...

EDIT2: actually, i'm sure i'm right... i may just try this at the weekend to prove to myself it works....

bcjames · 3 Apr 2008 at 23:01

Thats how I had it, for want of a better word, drawn.

Tosk · 4 Apr 2008 at 00:29

if your gonna do it do it right

you will need some resistors and wiring as well as your choice of leds.

here is a LED series/parallel array wizard
http://led.linear1.org/led.wiz

once you have the leds and you know the forward voltage, and forward current is.
you can then work out what resistors you need.

if you need more help just ask m8

CliffyBiro · 4 Apr 2008 at 12:05

And use heatshrink to stop it shorting on the case?

waso_dude · 4 Apr 2008 at 12:23

Google EL String - Its what the Alaska stuff is.

You can get it in multiple colours ect... its generally a car moding thing.

Tosk · 4 Apr 2008 at 16:28

skippi90 said:
And use heatshrink to stop it shorting on the case?

yeah you need to make sure the soldering ends are covered

i have an idea for you use a UV perspex sheet and wiring up some UV leds into it so the UV sheet glows.
just make it shorter than the board and place it under the board if there is space for it. it should
look sweet if its done right