A4988 driver board widely used in 3D printers and small CNC machines. Simple operation and direction control interface. Thermal protection, over-current protection, earth fault protection. Five different resolutions: full step, half step, quarter step, eight steps, and six steps. Adjustable current control allows you to set the maximum output current with a potentiometer, allowing you to use voltages above your stepper motor's rated voltage to achieve higher speeds.
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