@funnydrummer: You don't need resistors on the base of an emitter follower so you can delete those entirely. If you're opposed to using resistors for current limiting (which is the only reason I can see to stack up diodes like you have from the supply) you can use a constant current regulator (CCR) device like the NSI45020T1G from ON Semi (Mouser, $0.34 each). If you use a CCR device you can get rid of all the transistors and resistors entirely and use just the CCR. Put one per drive segment (they can be used high side or low side, see schematic). Run the PIC from 5V and there you go. And why would you post C code on the Pic Basic forum?


@Svrzic: The PDF schematic that is posted is FOR DISCRETE LEDS. Regardless if you buy them packaged or use discrete components the schematic is the same. I think you said you're 17 years old. Good for you for your interest in electronics but it sounds like you need to back up a bit and start with something a little easier.

LEDMATRIX_CCR.pdf