[Konstantin] had some extra 27C256 EPROMS lying around and decided to use them to animate an 8×8 LED matrix. He’s not only using them to store data, but driving the display with them as well.

There are so many nice hacks in [Joekutz]’s retro LED ... Arduino pins. Scanning at 80 frames per second he gets a nice, flickerless display. To make both the LED matrix circuit board and the ...