ORTUR Laser Master 2 32-bit Motherboard Laser Engraving Machine 400 x 430mm Large Engraving Area Fast Speed High Precision Laser Engraver.From the grblControl software you can set them by sending these 3 commands (in order, X, Y, Z): hex file you downloaded from the grbl link above on Github Calibrate the X/Y/Z axis stepper motors so they move the correct amount.
