Hướng dẫn điều khiển động cơ bước với module driver A4988

Tutorial For Interfacing A4988 Stepper Motor Driver With Arduino

If you are planning to build your own 3D printer or CNC machine then you will need to control a bunch of stepper motors. And having only one Arduino to control all of them can take a lot of processing and leave no room for anything else; Unless you use a self-contained dedicated stepper motor driver – the A4988.