28BYJ-48 stepper motor driver

Good work dealing with stepper motors at this level. I did a CNC drill for PC boards a few years back but I used the EMC2 software to control the steps to the motors on the 3 axis.

It occurred to me that an optical lever could be of use.
Attach clamp glue the motor frame to the table.
Attach a small plane mirror to the motor shaft so the flat of the mirror is parallel to the shaft.
From a few feet away fix a LASER pointer to the table so that the beam hits the mirror.
The reflected beam should make a spot on the wall.
Mark the spot on the wall.
Now step the motor one step and see how much the beam moves on the wall.
A full 360 degrees of steps should align the beam back on the wall spot..
The EMC2 website:
http://linuxcnc.org/
Use a parallel PC port to control direction and steps on 4 axis and uses G code files.
G code:
https://en.wikipedia.org/wiki/G-code
I used the coordinates in the Eagle drill files and a C++ program to create the G-code file for my drill.
G-code on Arduino
http://reprap.org/wiki/Arduino_GCode_Int­erpreter