That's a pretty good one. It's more realistic than the one shared here in that it uses an actual deck of cards so that all the segments don't arrive at their destination at exactly the same moment, but rather the message is revealed as the cards arrive one by one (depending on how far they had to travel to get there). I love that effect!

Anyway, here's one that I made with jQuery 10 years ago (since forked and now maintained by qrion) https://qrion25.github.io/splitflap/

In terms of features I haven't seen other split flap displays offer, it rolls a little better (more than one flap segment can be rolling at a time, letting the rolling animation be slower) it lets you set up a completely custom deck, and can even support muliple letters or numbers on a single flap (like the real displays sometimes do -- they might have the name of a whole train station)