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Was able to get this to "work" by using the libraries supplied here: https://www.thingiverse.com/thing:3086882. The new TM1637 library has changed since you originally posted this.

However, when I turn the encoder clockwise, the display number increases by two, then to 0, then by two, then to 0, etc. (Example: 100, 0, 102, 0, 104, 0, etc.). When I turn the encoder counter-clockwise, the display number has the same affect, except by increments of 4 (Example: 100, 0, 104, 0, 108, 0, etc.) The stepper motor stops on 0 and moves otherwise.

Pushing the encoder button does nothing.

Another camera slider