Not certain what your intent is, however, before I'd employ thousands of
pics.  I'd look into setting up something like is used with a regular
monitor.  A memory matrix that was 3 bits deep and just scan it out to the
LED's.  Not certain what the X,Y size of your matrix is but at some speed
the persistance of the eye will have an effect, you may even need to
subdivide the matrix into smaller quicker scanned submatrices.  But no way
I'd employ thousands of PIC's to do this.

My 2 cents.
Doug

----- Original Message -----
From: "Steven Rightnar" <rightnar@DOMINION.LLUMC.EDU>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, March 21, 2000 7:26 PM
Subject: driving 1000's of leds


> Hi all:
> OK maybe my last post didnt make it or maybe my ?'s were blown off. I
> seriously want to build this gaint computer monitor out of three different
> colored leds as my pixels. I have seen huge ones biult to cover the
streets
> in down town Las Vegas of course these are alot bigger than the one I want
> to build. So at first sight for 100000 leds I need appprox 10000+ PICs
> however since I have not got a clue about how to start this could someone
> please direct me... even if it is over a cliff. Thanks (flame me as
needed).
>
> Steven