Steve:
I think your design and execution of the turntable is great. I have built several specialized stepper and servo CNC machines for my business. I know the thought and effort it takes to do what you have done. I have never used an Arduino before due to power requirements. I especially like your method of lining up the tracks exactly every time automatically. I have been thinking about a turntable control system using steppers for years. Unlike me, you actually designed and built one!
Bill Box
