A4988 Driver CNC Shield Expansion Board for Arduino V3 Engraver 3D Printer

100% brand new and high quality IO corresponding figure above UNO for Arduino ---------------------- expansion board 4 ---------------------- Z.STEP (Z -axis stepper control) # define EN 8 // stepper motor enable, active low # define X_STP 2 // / x -axis stepper control # define Y_STP 3 // and -axis stepper control # define Z_STP 4 // z -axis stepper control / * * / digitalWrite (dirPin, dir); delay (50); for (int i = 0; i

eBay