k7elp60, since you say you have made displays a few times before, could you also give me any tips on powering the LEDs?
Mainly just what sort of power pulses they are able to withstand. I was told they could handle maybe 100ma pulsed at a low duty cycle, so I was going to see if I could give each column 100ma, at 6.25% (100% / 16 columns) duty cycle. And the screen would be refreshed probably at 60hz, so each pulse would only last about 1 millisecond. Does this sound reasonable? I haven't powered LEDs with pulses like this before. I guess it depends a lot on the LED being used, I am looking for something pretty cheap, since there will be so many of them, and simple red color is fine. Probably a kinda wide angle LED would be used.