Running out of pins for stepper! Need help with alt solutions.

hanslanda:
I2C would allow me to run multiple drivers on one line correct?

hanslanda:
I2C would allow me to run multiple drivers on one line correct?

Potentially - different I2C motor drivers will have different capabilities, consult the documentation/datasheet for the I2C motor drivers you're looking at. There is a lot written about this; I suggest you do some googling.