A friend of mine is interested in having me make him an LED face for the front of his music equipment box thingy. It would be a pattern of LEDs that would mostly be controlled independently, although if necessary it could be wired up so that many share the same pins. I've only ever gotten as far as using 595's to shiftout to a few LED's so this is quite a step up for me, but something I'd really like to try.
I think we would be looking at a hundred or two LED's. My first question is, would it be a bad idea to daisy chain a whole lotta 595's? would I have to worry about lag or anything else? Is there an alternative to the 595 that provides more output pins so as to be more economical?
Another question is what are my options with PWM? Are there shit registers that support it? Or would it be possible to simulate PWM myself by shifting out rapidly? That seems a bit unlikely.
Anyway, he seems pretty flexible so I just want to get an idea of that could be done, and how I could approach it. I would really appreciate any info.