A4988 stepper motor driver control panel + A4988 stepper motor driver Arduino stepper motor drive; Micro stepper motor with built-in transverter easy to operate; It can operate the bipolar stepper motor under full half 1/4 1/8 and 1/16 stepping mode output driving performance up to 35V and +/- 2A; A4988 including a fixed turn-off time current voltage stabilizer the voltage stabilizer can work under slow or mixed evanescent mode; Transverter is the key for A4988 easy to operate; It can drive the motor to produce micro step only enter a pulse to the stepper; no need to make phase sequence table high frequency control line or complicated interface programme; Suitable for the complicated microprocessor no use or overload use; Low RDS (open) output; Auto current attenuation mode detect / chose mixed or slow current attenuation mode to the low power dissipation synchronous rectification interior UVLO crossover-current protection 3.3V and 5.5V compatible with VDDCC; Overheating shutdown circuit ground short-circuit protection loading short-circuit protection 5-selectable stepper mode: full 1/2 1/4 1/8 and 1/16