Hi, I follow this tutorial link. But it seems no matter what I did, I just can't get the motor to turn. I checked my wiring multiple times, It is fine. Is there something wrong with the code? Is the firing sequence correct? Thanks.
Have you checked with a battery that your stepper motor works? Here's how to do it:
Although that video was about recognising the right wires.
Next write some code and check that your stepper motor driver actually outputs the voltage correctly. With a multimeter.