Looking for help with Tri Cree LED; specifically, resistors

[Mitharu]

Heyo there,

Small background; had a purple blade for awhile, red LED burnt out turning it blue. Picked up a new LED that was just put in yesterday that was hopefully going to be purple, however the main color that overpowers the rest is red (a beautiful red, but not the desired color). Read through some posts on this forum, and saw a majority talk about resistors being used/played around with to get a purple color.

I have little knowledge on LEDs, and my group's saber repair guy has barely touched resistors. So I've come here to ask for help on what else I need to get for the LED to mix the three colors I have into purple.

Setup:
Tri-Cree
1. Royal Blue
- "600mW Minimum Radiant Flux @ 350mA"
2. Red
- "80.6 Minimum Luminous Flux @ 350mA"
3. Green
- "122 Minimum Luminous Flux @ 350mA"

(Someone had told me this was an optimal setup to get a purple "LED")

Buck-puck (not sure what make/model atm)
&
Powered by 18650 battery (also not sure)

What kind of resistors would I need to place on which color, and is there anything else that would be required to be able to mix the LED's together? I saw a few mentions of "FoC"; what would that be, exactly?

Gonna apologize for my ignorance, I hope to rectify it in the future. Haven't had a purple blade for months so I've been pretty excited to be able to fix that. ^^'

If there is any other information required, I'll do my best to try to provide that to anyone!

[Silver Serpent]

The information you will need is the Forward Voltage (Vf) of your LEDs, and the desired current (typically 1000mA) for each one.

See these excellent videos by Madcow for finding resistors and doing custom color blends:
http://forums.thecustomsabershop.com...ing-my-Resitor
http://forums.thecustomsabershop.com...rs-Made-Simple

This stickied post: http://forums.thecustomsabershop.com...e-to-Ohm-s-Law will show you how to calculate your resistor value.