A4988 Stepper Motor Driver

A4988 stepper motor driver - stepstick

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A4988 stepper motor driver - stepstick features adjustable current limiting, over-current and over-temperature protection, and five different microstep resolutions (down to 1/16-step). 


It operates from 8 V to 35 V and can deliver up to approximately 1 A per phase without a heat sink or forced air flow (it is rated for 2 A per coil with sufficient additional cooling).


  • Stepper motor controller based on A4988.
  • Maximum operating current of 2A 
  • Supply voltage in the range 8.2V to 35V
  • Thermal protection
  • 4-layer PCB
  • Step configuration: full step, 1/2 step, 1/4 step, 1/8 step, 1/16 step
  • Regulation of the current by the motor using a potentiometer.
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