Single LED - 3 Colors

wuchy143

Member

• Feb 3, 2014

• #1

Hi,

I would like to know if there are any LED's out there that are capable of outputting 3 different colors while coming out of a single LED. From pawing around I find that the RGB led is capable of this. Does anyone know of alternate technology that is capable of outputting Red, White and blue from a single LED?

Any info on topic would help. Thanks!

 

M

MrAl

Well-Known Member

Most Helpful Member

• Feb 3, 2014

• #2

Hi,

Single white LED with transparent color wheel and motor or servo.

 

wuchy143

Member

• Feb 3, 2014

• #3

Thx for the reply. I think that would work great but may not work for my application and I should have been clearer in my description. I apologize.

This needs to be a discrete single LED that can fit into a .200" circle. It is intended to go into a keypad and needs to be software select able between the 3 different colors. (aka hit Fn key and say "B" key for Blue)

 

4pyros

Well-Known Member

Most Helpful Member

• Feb 3, 2014

• #4

Mostly it is only RGB, that is to mix the colors to make any color, even a form of white can be made with the proper mixing of all three colors.
https://en.wikipedia.org/wiki/RGB_color_model
Other than that there are a lot of bi color LEDs.

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Feb 3, 2014

• #5

The bi colour led's are usually red when the current flows one way and green the other, then if you alternate the flow quickly you get yellow!!! I've never seen a blue one though!!

 

M

MrAl

Well-Known Member

Most Helpful Member

• Feb 3, 2014

• #6

Hello,

Well then you are stuck with using an RGB LED. Dont count on getting mixed colors though as those things usually dont mix well because there is a small but significant distance between the different color LED dies on the chip, so the light projects in slightly different angles. Sounds like you dont need that though.