After four hours at a swim meet when I had to get up every few minutes to see what events are coming up (a. you can’t hear the megaphone in a cavernous public swimming hall and b. events sometimes get condensed if there aren’t enough swimmers (what I call a SuperHeat)), it occurred to me that a POV display, like this one, might be useful. I wonder how hard it would be to make a simple input interface where you can key in event numbers and heats.