Controlling a stepper motor

[pj84]

I want to control a stepper that is lifting a scissors lift but I want to calibrate it to different height, enter in the heights into memory and then recall when necessary.

[bushman]

a step is going to correlate to a change in height.
It should be a linear fuction, so no lookup table would be needed.
The challenge would be having the program know where the table is on startup or at any given point in time.
That is the issue when running a circuit open loop ie no position feedback.