Any details on the matrix? Like which pins are anodes or cathodes?As drawn, you should multiplex LED by LED. Code was posted on doing just that over the weekend I believe.The 74HC595 is only rated to sink/source 70mA total per the package; if you drive all 8 LEDs (in a columm or row) from 1 '595 with more than 8-9 mA, and sink all that current with 1 pin in the other '595, the 2nd '595 will see too much current.
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16