To begin, I'm new to this forum and this is my first time posting. I'm working on a friends psp (trigger mod) and would like to use red led's. I understand that red led's are of lesser voltage (2.4) than the blue led's of (3.5,5.0) volts. What number ohm resistor can I use in order to properly power up the low voltage red led's with out having to worry about burnning them out. Edit: would the 10 ohm resister still be good enough or a higher ohm be necessary. Any help would be highly appreciated. Thanks...