Arduino length stop meter v2 with Stepper!

A major overhaul of my project.Now with stepper drive!!
It uses an arduino uno loaded with GRBL firmware,an arduino Due that communicates with the uno,it runs the code and handles the lcd-keyboard.A nema 24 30kg stepper 1.8d (200 steps motor) and a TB6600 stepper driver set 6400 microsteps.

The edvantages..it works on plain gcode...dont have to reinvent anything!
The stepper has very strong holding torque..so it stays in its possition,it has limit switche to accuretaly home itself and be repitable all the time.The accuracy is far greater..it has 0.1mm (it could 0.01mm).
It runs on simple gcode...so its very easy to adapt to other saws.(you can set the offset,the speed and homming parameters from console)

The code for the arduino is here (the other runs grbl)
https://create.arduino.cc/editor/babi...