Switch color of LED when current passed in

[tim_l_012]

Hi All

I am looking at doing a mod for my mouse, basically so when I scroll the mouse wheel, it changes the color of the LED.

i have almost found a RGB LED as they are known, I'm trying to find one with 4 legs. so it will have red, green, blue, and ground.

I need a SMALL circuit that can chage which leg the current is being passed to, when I pass voltage into a seperate line. I don't know if this makes sense, but I would really like to hear from someone who could help me with this.

Thanks in advance,

 

[Someone Electro]

You beter get to thinking with logic gates...

To do it with transistors can get complicated a lot!
Any how logic gates can get comlicated to but not as lot as transistors.

And here is a noter idea:

Study the circutry of a computer mouse.Meaby you will find the anser.


PS:
I think this project is to comlicated! :?

 

[LiquidKernel]

Here's a good source of LEDs and in particular the tri-color LED you're looking for: http://www.superbrightleds.com/TriColor LED.htm

These guys provide a good service and have fast shipment.