Vane clock with mechanical segment displays

NashblackCat is working on a clock with some interesting mechanical flip-digits:

I have a set of flip digit modules and I am tinkering with what would be the best way to use them in a HH:MM:SS clock setup. I am tinkering with a few ideas on how to move them. You see it has three pins for each solenoid, up, ground in the middle, down, and it’s that 84 sets of pins I need to move. I have seen people move the dot displays with shift resisters/H-bridges. I was thinking of using a mega and a pair of Centipede Shields to get the needed I/O and voltage .

Via the forum.