@milamber Thank you for the link! Is shiftMatrixPWM being actively developed alongside ShiftPWM? If so, where can I get the latest version?
I think it may be possible to do this using the ardunio uno. Has anybody tried using the uno to control shift registers running at 5V using something like this: http://rocky.digikey.com/WebLib/Texas%20Instruments/Web%20data/SN74LVC4245A.pdf ? Would this work?