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Prusa3DPRO Big Easy Driver Stepper Motor Driver Board v1.2 A4988

4.0 out of 5 stars 1 customer review

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  • Bi-polar Microstepping Driver
  • On-board 5V/3.3V Regulation
  • Max Motor Drive Voltage: 35V
  • 2A/Phase Max
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Product description

The Big Easy Driver, designed by Brian Schmalz, is a stepper motor driver board for bi-polar stepper motors up to 2A/phase. It is based on the Allegro A4988 stepper driver chip. It's the next version of the popular Easy Driver board.
Each BigEasyDriver can drive up to about 2A per phase of a bi-polar stepper motor. It is a chopper microstepping driver which defaults to 16 step microstepping mode. It can take a maximum motor drive voltage of around 35V, and includes on-board 5V/3.3V regulation, so only one supply is necessary. Although this board should be able to run most systems without active cooling, a heatsink is recommended for loads approaching 2A/phase. You can find the recommended heatsink in the related items below.
Note: The arrow indicators on the current adjustment potentiometer is backwards. Keep this in mind if you're adjusting the current limits.


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April 8, 2018
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