Well I started on the Arduino.
I bought a starter kit and I was able to make the LED blink.
OK I have a LOT of learning to do........
Yes this leaves me a very long way from having something that will make my SG run.
I am starting to compile a list of features and variables for the machine that will be needed / desired. There will be a lot more variables for use inside of the program once I get that far.
At this time I have no intention of trying to automate the Y axis now or in the future, Just the X and Z.
So far my list is.
Length of travel in X and Z
Speed in X and Z
Acell and Dcell in both X and Z
4 grind patterns (Zig-Zag slow steady Z feed, Step at one end, Step at both ends, and None) (None has Z motor turned off for manual input.)
Hold X position for dressing wheel
Jog buttons.
Limit switches for X and Z
E-Stop button
Anything else I should consider????