HALJIA 3D Printer A4988 Stepstick Reprap Stepper Motor Driver Module with Heat Sink Compatible Arduino

Simple step and direction control interface, Short-to-ground and shorted-load protection Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay) Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor¡¯s rated voltage to achieve higher step rates