I am currently making a CNC machine using Arduino Uno, CNC shield V3 with DRV8825 powered by a 12V 30A power supply. To drive the motors I load up GRBL into Arduino Uno and manually jog it using the Universal Gcode sender GUI. However, when I run it, the steppers will not rotate. The steppers vibrates and I hear humming noises coming from them. I have checked to make sure my stepper wires are connected correctly but the problem still persist.
Has anyone encountered this problem before? Please offer some advice.