Manual flip-down counter

I thought I’d challenge myself to create a flip-down counter.  It worked!  It’s made up of paper, paper clips, and the housing is custom-made with the 3D printer.  It initially looked like a daunting task to figure out how to put everything together, but it turned out easier than I had expected.  It took a few tweaks to get there – how the numbers had to be spaced and adjusting the paper height for some numbers.

I guess the next step is to either link it up to a dc motor, or to another set of numbers.  What I’m not looking forward to is the 4hr wait for the 3D printing.  Maybe I’ll used wood instead.