I have a need to switch a 64 way exhibition piece in an 8 x 8 matrix. We are
farting about here to impress. The output stage I can manage. It's the
control strategy I am wondering about. Due to design considerations I cannot
multiplex outputs, so driving with 16 switches (8 columns and 8 rows) isn't
practical .
It has to be controllable by a demonstrator, and they're not printing
characters or any standard shape; what is wanted is an efficient and humanly
usable interface to address these. I looked at remote control ics, but the
interface is too well integrated into a tv. Ditto serial connections. I
haven't multiplied out the combinations, but it is daunting(zillions). There
will be a pic(16f877) based pcb I can attack and alter if needs be, but my
coding skills are primitive. Mind you, the pic16f877 isn't.
The very basic would be addressing the cells individually via a pc & serial
port. Anyone got a better plan?
--
Regards,
Declan Moriarty
Applied Researches - Ireland's Foremost Electronic Hardware Genius
A Slightly Serious(TM) Company
Experience is like a comb,
that Life gives you - AFTER all your hair has fallen out!
--
Author: Declan Moriarty
INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
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