Hi, I am beginning a project, and need some advice.

I want to control a drafting ruler, so that it will move incrementally a certain distance each time a control is pressed.

Best would be a number keypad with lcd screen to input the increment value.
This would need a stepper motor, stepper controller, processor board (raspberi or arduino?) and input (keypad) electronics.

I have experience with programming, but not so much with electronics, and am not sure what processor/controllers to use, and how to set it up.

In spite of all the info I found here about CNC motion control, I still am not sure how to proceed, in particular, how to implement a keypad input.

I would appreciate any help. Thanks.

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