Quick resistor question

[sks1138]

I'm helping a friend with his saber. It will eventually have a PRIZM board in it with R/G/rB tri-cree. I just need a clarification on the resistors.

I've got the .5ohm .5W resistors for the green and royal blue.

For the red I have a 1.3ohm 1W I picked up at an electronics surplus store. I also picked up a 1.5ohm 2w

Will the 1.3ohm 1W be ok for the red or should I get a 1.2ohm 2w for the red? I don't want to fry the red since it won't be mine in the end.

Another question. On pg 29 of the PRIZM manual it shows a RGB LED wired up for a crystal chamber. Am I correct in assuming that the voltage for that would be 3.7v like the main LED?

Thank you for any help.

[darth_chasm]

You'd be ok with either resistor. I believe the voltage for the crystal is 3.3

[Silver Serpent]

If it were mine, I'd feel more comfortable with a 2 watt resistor. You're looking at a touch over 1 watt for power.

I believe that is 3.7v, but I'm not certain.

[Miraluka]

The diagram you mentioned has the RGB accent LED running from the main LED pads, so that would be 3.7V. The actual accent LED pads are 3.3V.