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Description: This Expansion Board as a Driver Expansion Board, can be used for Engraving Machines, 3D printers. It has total of four Slots, Can Drive Four A4988 Stepper Motor.The A4988 is a Complete Microstepping Motor Driver with Built-In Translator for Easy Operation. It is designed to operate bipolar stepper motors in full-, half-, quarter-, eighth-, and sixteenth-step modes, with an output drive capacity of up to 35 V and Time Current Regulator which has the ability to operate in the slow or mixed decay modes.Each Stepper Motor only need Two Io ports. In other words, Six io ports can be well manageded for three stepper motors.it is very convention to use.Specification: grbl 0.9 Compatible. (Open Source Firmware That Runs on An Arduino Uno that turns g-code commands into stepper signals) PWM Spindle and Direction Pins4-Axis Support (X, Y, Z, A-Can Duplicate X, Y, Z OR DO A FULL 4THE. With Custom Firmware using Pins D12 and D13) 2 x End Stops for Each Axis (6 in Total) Applications: 3D Printerengraving Machines
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