nice schematic, Jinx....

I am using two 74hc595 , cascaded -- 8 bit shift registers, using the bottom
14 bits,
my dot matrix is a 5x 8, it has 14 pins...this works OK, but I think I am
going to use
individual transistors to juice it up also, should be inexpensive...

I have found that each individual dot can be controlled, by itself, but that
certain
pairs on the matrix cannot be turned on....is this true or am I missing
something?

I guess it is not possible to use one of these matrices the way you would
use an
8 segment display, or for individual character...this true right?

I had the notion that I would be able to find the bit pattern for a
particular dot
and then AND it with another bit pattern to turn them both on....LOL


I'm looking into other ways to power this thing, let me know your
progress...

thanks
rad0



> I've chosen Zetex transistors as they will switch high current
> quickly and also have a low saturation voltage. Another
> reason is that a feature I'd like to add is fading. With greater
> control over the pulse width (and its integrity), fading should
> be quite feasible
>
> http://home.clear.net.nz/pages/joecolquitt/8x8led.html
>
>
> > thanks,
> >
> > no typos this time...
>
> Thanks for plyaing ;-))
>
> --
> http://www.piclist.com#nomail Going offline? Don't AutoReply us!
> email listserv@mitvma.mit.edu with SET PICList DIGEST in the body
>
>

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body