one simple step and direction control interface.2.over-temperature thermal shutdown, over current shutdown and under voltage lockout3. upgrade your allegro a4988 drivers more protection, higher current, less heat, more torque on the stepstep 4. six different resolutions: full step, half step, 1 / 4, 1 / 8, step, step, step, 1 / 16, and 1 / 32 step5.built-in regulator (no external logic voltage supply))
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