> How about a couple latch chips (a column select latch and row latch) and a > for each character and updating to the next column on every sweep? You'll > probably want transistors to better drive them. Even a 0.7" LED matrix taht > I am using is almost begging for transistors, right now it is directly > driven by an 'F872, I am not using multiple displays. > > There are tricks to save here and there but a large set of LED matrices is > going to cost you. > > Jeff Thanks how would I catch the serial bytes that I am sending out to each matrix? is there such a thing as a latch that has a serial input? with a pic, I want to use 3 lines to each matrix, ground, pwr, and serial... and these could be common to all...each matrix listening for it's address and ignoring everybody else... -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu