This project is designed by Greg Zumwalt whose complete build instructions are found at: https://www.instructables.com/Marblev...
This is the final installment of my build experience which shows the modifications and suggestions I had for completion. My introduction, and Part 1 of this project are in these links:
Introduction: • Build this Arduino-based, 3D Printed ...
Part 1 (electrronics): • Build this Arduino-based, 3D Printed ...
My printables site with STL files of my mods is at:
https://www.printables.com/model/4977...