This "16x16 Stepper" GBC was built as a contribution toward the greatballpit.com Community Module Challenge in 2018. The visual design is heavily influenced by the 2015 stackable Brickworld Chicago module. The steps are driven by an Akiyuki mechanism.
Video: https://www.youtube.com/watch?v=KD4Tp_Suaa4
Instructions: https://github.com/rykfield/REF03-16x16-Stepper/raw/master/REF03%20-%2016x16%20Stepper.pdf
Parts List: https://github.com/rykfield/REF03-16x16-Stepper/raw/master/REF03%20-%2016x16%20Stepper.xml
All available modules and instructions
You might also like The Great Ball Of China: https://www.youtube.com/watch?v=Vlvy_arx3Xg