resistor question

[Swampy]

Hi again guys, I just received a couple of resistors for my first Saber build. Two .47ohm .5w and Two 2ohm 1w.
I think i did the calculations right, but i cant tell which resistors are which?
the two brownish looking ones are larger and have 2 gold bands and 1 black band. And the slightly smaller two look greyish with 5 bands?

I am using a Prizm 3.5 board with a 3.7v 18650, so the 2ohm 1w was for the RED die and the .47ohm ones were for the blue and green. (LUXEON- Tri Rebel)

Any ideas guys?

Cheers,

Swampy

[Thalan the Exiled]

I believe you are correct on rhe blue/green but if I remember when I set up my RGB rebel I used a 1.2ohm 1w resistor on the red

[Swampy]

Yeah, you might be right on the RED, I'll check my calculations again. I couldn't find the Forward voltage for the TRI- Rebel so I took it off the single die led's?
Not sure if I've done that right?
Thanks again

[Thalan the Exiled]

That is where I got the numbers I used to do my calculations. I assume that they tri and the single use the same diodes. If I am wrong someone please correct me so I can adjust my setup if need be

[Jay-gon Jinn]

Yeah, you might be right on the RED, I'll check my calculations again. I couldn't find the Forward voltage for the TRI- Rebel so I took it off the single die led's?
Not sure if I've done that right?
Thanks againThat is the correct to figure it...the same led's as the single stars are what are used on the tri-stars.

[Swampy]

Thanks guys,
just about finished all the wiring, still waiting on my batteries to arrive before I can see if my soldering is OK.....

[Bark]

Resistor Color Coding (https://en.wikipedia.org/wiki/Electronic_color_code#Resistor_color-coding)

0.47ohm, 0.5w resistor (Yellow-Violet-Silver)
Yellow = 4; Violet = 7; Silver = 10^-2 -----> 47 x 10^-2 -----> 0.47 Ohm

2ohm, 1 watt should be Red-Black-Gold representing:
Red = 2; Black = 0; Gold = 10^-1 -----> 20 x 10^-1 -----> 2 Ohms

Cliff Notes: Bigger size = More Ohms and/or More Wattage