Update: GCodeCNCDemo 6 & StewartPlatformV2 11.1
GCodeCNCDemo6 has a new sample, GCodeCNCDemo6AxisRumbaTimerInterrupt. Both programs now include timer interrupt logic so they can receive gcode commands while moving motors. Doing two jobs at once makes movement extra smooth. The source for both programs is available on github. Let me know what you think!
BTW, anyone who improves a project – even by asking a smart question – gets their name in the credits. You deserve to be recognized for your help.