Delta Printer - grasshopper files

Does anyone knows these 2 grasshopper files for controlling a Delta Robot ?

How can you get them ?

http://www.data-clay.org/resources/Stratum%20Networks%20Delta%20Rob...

• Step 5 - Software

• SOFTWARE:
  
  Arduino
  Rhino
  
  PLUGINS:
  
  Grasshopper, Firefly
  Arduino is interfaced with a modified version of the Quadstepper Firmata written by Jason K. Johnson and Andy Paine. All Controlling of the Delta Robot is done in Firefly, a plugin for Grasshopper in Rhino.
  
  Attached are two Grasshopper files that are the necessary files for basic operation and control of the Stratum Networks Delta Robot. One file brings the machine to it's homing position while the other controls the path it takes to make the artifact.
  
  See SPARKFUN for Quadstepper Motor Driver schematics