Hello, I have arduino uno R3 and cnc shield v3.51. cnc controllers are three pieces A4988.
Problem is then i have test my laser engraver. All motors moves very well and laser head working. i have little problem with driving machine at zero point a corner with switches. Then suddenly all programs show Z-axle value 2147491,000. Porgam send warning sign and any motors not moving. Laser head not working.
How i can fix this problem?
laser control PWM i take spindle pin (pwm).
I put couple pictures this below problem and junction box.
Thank you all!