i had an idea i would need to do that with the resistors and adjust for each led type, but i was going to look at that after... when i did a pwm tutorial i thought adjusting those resistors would be better left for the final versions when i had the code sorted... and i only used 3 as a quick way to get a prototype going.
as for the transistors, you may have saved my butt here, ive sort of been pulling ideas and code from other projects(my only way of creating seems to be copying parts from other ideas).
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i sort of knew i couldnt use too much current through the output pins, but thought from these examples maybe it was not an issue due to the on and off cycling.
not too sure how to go about setting that up but any help would be apreciated.
from my limited understanding of transistors i would need one for each row and column hey(everything attached to a digital output pin)?
what sort of transistor would be good for this... i couldnt use a bunch of 2n2222a i have left over from making silly little led flashers could i?