Electronics Anyone know circuits of Tri-Color LEDs?

Hello guys,
I want to use Tri-Color LEDs to replace my CCFL. I wish to use 20 Tri-Color LEDs (if possible), 10 on each side.
The problem is I don't know how to make a controller to control the LED colors.
Anyone able to help? Thanks.

 

manual color control
http://www.instructables.com/id/EAZWM7SMGAEWIFNUSK/


computer color control
http://www.bitrot.de/ledlamp.html

 

just google rgb led control and you will find many ways to control them

here are two more
http://www.emanator.demon.co.uk/bigclive/rgbcont.htm

http://www.best-microcontroller-projects.com/rgb-led.html

 

Thanks. Those were RGB LEDs. I'm wanted a Tri-Color LED which have 4 legs.

 

You don't get tri-colour LEDs with 4 legs. The one you have posted is a RGB LED - One leg common, one anode leg each for red, green and blue.

 

There's maybe a terminology problem here. I know 2 LEDs in a package were once often called tri-color, especially if a 3-lead package, as you could easily get either colour alone or a mix of the two. Now some sites sell what they call "tricolor RGB" in 4-lead common anode and common cathode. "Rainbow", "Full color" or just "RGB" is clearer if you want one that can give any colour, like the 6-lead Kingbrights.

 

the last three links i posted were for 4 leg leds. which are RGB. look at the schematics.

 

Can I use 4-lead to connect those controller without using 3 different color led?
Manual control would be nice like the 1st link.

 

even the three seperate leds should use a common ground so you should be ok

 

Ok. I'll try it out. Hopefully nothing bad will happen. Thanks