Not necessarily better, perhaps easier. The timing can be implemented with delay() (worst), millis(), micros(), or timer interrupts, depending on the application needs and what a library implements.
Isn't the first picture my circuit with in the middle the motor (his impedance etc)
And the 4pins (the 2CW and 2ACW) I connect it to 4 digital pins
Bi-polar steppers have two coils, so they need two H-bridges.
Leo..
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