I was originally planning to use a transistor circuit, is this not the same as what is in a buffer IC. I have not wanted either as not enough room, however I can squeeze it in now I think. Going to see what is available at jaycar ( might get bigger PCB too ).
I think I might have a use for a buffer now, I can use it for the serial lights, pin 13, and one RGB led I want attached to 3 pwm lines.
Cheers