>>Hmmm... And with a 2-dimensional PWM control you might be able to=20 >>control the brightness of each LED color too. Won't be able to use a=20 >>decade decoder. Will have to address each of the 10 rows directly. >This is not true. You do your modulation with the 6 column drivers. But wouldn't that mean all the LEDs in one column would have the same brightness? Or am I missing something here? Shahid -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body