diy LED light directions

[Fiveohhh]

I'm looking at making some lights with LEDs and curious if anyone knows a good site that explains how to wire it up. I found a few with projects,but I'm planning on a few different things, and I more or less need to know formulas to find out what resistor I need a how much voltage I'll need for a certain LED. I have the basic ideas I just need to figur out how to wire it up.

 

[PrincessGuard]

What are you trying to do?

If you're just wiring some LEDs to a power source, then all you need is V=IR. The voltage drop across a LED is constant so you just need to put a resistor in series to limit the current. R = (Vs - Vd)/I, where Vd and I are specific to the LED used (look at the datasheet).

 

[Fiveohhh]

thanks thats basically what I was looking for. I want to try and rig a night light up with a few in the bathroom, and also illuminate the hallway and stairs.

 

[rpberry123]

expecting a blackout, or ringing the toilet bowl rim with a light show?

 

[simms]

Originally posted by: rpberry123
expecting a blackout, or ringing the toilet bowl rim with a light show?

I like the latter

 

[Fiveohhh]

Originally posted by: rpberry123
expecting a blackout, or ringing the toilet bowl rim with a light show?

Hmmm that would be kinda cool I just would rather use leds. light is whiter and no burn outs.

 

[DurocShark]

A small resistor in series will work just fine. If you're doing it off mains power, you'll need a wall wart AC-DC converter. Like 5v is great, 9 is ideal for most of the less expensive LED's out there.

I like this site: http://www.ledtronics.com/

Good info, and cool stuff.

 

[Fiveohhh]

do the leds make a difference I saw on ebay you can get some 7000-8000 mcd ones for about $.25 each if ya get 100 of em...

ebay
ebay