Another digital dividing head

[Eaglewood]

So I needed a dividing head and at my advanced age I have trouble concentrating. I knew I would lose count or forget where I was entirely and thats why this was born.
It is powered by an Arduino,driver, stepper motor and a 60:1 worm.
My son is a talented programer and a God send for this project as I don't know hot from neutral. There is an interlock switch which tells the program and LEDS that the spindle is locked so I can't advance even if I don't pay attention to the lights. I bypassed the dip swiches in the driver so the program can choose an appropriate fraction of steps for what I have chosen. I can also go forward, backward,go to an inputted step and choose a speed. Hopefully soon a feature to select angles as an option to steps will be added.
The head uses an Atlas spindle mounted in an AL. structure with tapered roller bearings. I rebuilt the chuck ( company went out of business in 1948) and reground the jaws to insure concentricity. I do not have sophisticated measuring equipment so checking accuracy is iffy at best, but an initial go shows it to be quite accurate, certainly within .001/.002.
I am not a photographer or the son of one so please don't think badly of me for the pic quality.
Dick