High Powered LED Flasher Electronic Drawing

[FGS]

Hello. This is my first Posting here in Candlepower forums.

I am looking for help on finding a electronic diagram on how to make a high powered LED flasher using 2 colors (A and B). The flash sequency goes like this A-A-A-A-B-B-B-B-A-A-A-A-B-B-B-B... (Called Quad flasher.) The leds themselves will be different colors and the power rating of the LEDs will be 15w+. The PSU voltage will be 12VDC.



Rules for the diagram:

• Sequency is A-A-A-A-B-B-B-B-A-A-A-A-B-B-B-B... (Or Quad Flasher.)
• Need to drive two colors or same colors (Amber-White or Amber-Amber)
• Need to handle LED(s) power of 15w or more
• Need to be able to work on 12VDC
• Have to be simple and cheap to make (already have the LEDs)

Thanks.