1 Set of Sliding Glass Door Roller Wardrobe Door Roller Cabinet Door Pulley New. This shield can make quick work for managing stepper motors in your project. It has in total 4 channel slots for A4988 stepper motor driver modules (not included) for driving 3 channel of stepper motors.3D printer stepper motor driver can be used as driver expansion board for engraving machines and 3D printers.
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