ARDUINO CNC SHIELD V3

Description: This shield (HCARDU0086) is designed to allow you to control a CNC router or milling machine from an Arduino board. It contains 4 driver sockets which allows compatible Pololu A4988 driver modules to be inserted (see HCMODU0068 on our website) providing the ability to drive 3 stepper motor axis (XY& Z) plus an optional 4th auxiliary motor. Additional connectors provide easy connection of end stop sensors and control buttons.  Schematic and test Sketch available on our support forum. UNO for Arduino---------------------- expansion board 8 ------------------------ EN ( stepper motor driver enableactive low ) 7 ----------------------- Z.DIR (Z -axis direction control ) 6 ----------------------- Y.DIR (Y -axis direction control ) 5 ----------------------- X.DIR (X -axis direction control ) 4 ---------------------- Z.STEP (Z -axis stepper control ) 3 ---------------------- Y.STEP (Y -axis stepper control ) 2 ---------------------- X.STEP (X -axis stepper cont