■在庫はない場合は、通常5～10日以内に発送。販売元直送の場合もあります、発送後に追跡番号を発行。 納品日数は最大10-15日の場合もあります。<br/>■初期不良・不良品による返品・交換(3日内)の返品送料はお客様負担となります。<br/>Geekcreit? UNO R3 With 4pcs A4988 Driver With CNC Shield V3 Expansion Board For Arduino 3D Printer<br/><br/><br/>Feature:<br/><br/>This expansion board as a driver expansion board  can be used for engraving machines  3D printers.<br/>It is a total of four slots  can drive four A4988 stepper motor. Each road stepper motors only need two IO ports. In other words  six IO ports can be well managed three stepper motors. Very convenient to use.<br/>UNO for Arduino module IO port correspondence introduction.<br/><br/>Package included:<br/><br/>1 x 3D Printer Expansion Board<br/>1 x UNO R3 board with USB<br/>4 x A4988 driver<br/><br/>IO corresponding pin: (For reference only)<br/><br/><br/><br/><br/>UNO for Arduino---------------------- expansion board<br/>8 ------------------------ EN ( stepper motor driver enable   active low )<br/>7 ----------------------- Z.DIR (Z -axis direction control )<br/>6 ----------------------- Y.DIR (Y -axis direction control )<br/>5 ----------------------- X.DIR (X -axis direction control )<br/>4 ---------------------- Z.STEP (Z -axis stepper control )<br/>3 ---------------------- Y.STEP (Y -axis stepper control )<br/>2 ---------------------- X.STEP (X -axis stepper control )<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>The following is a simple stepper motor control procedures:<br/><br/># define EN 8 / / stepper motor enable   active low<br/># define X_DIR 5 / / X -axis stepper motor direction control<br/># define Y_DIR 6 / / y -axis stepper motor direction control<br/># define Z_DIR 7 / / z axis stepper motor direction control<br/># define X_STP 2 / / x -axis stepper control<br/># define Y_STP 3 / / y -axis stepper control<br/># define Z_STP 4 / / z -axis stepper control<br/>/ *<br/>/ / Function : step . function: to control the direction of the stepper motor   the number of steps .<br/>/ / Parameters : dir direction control   dirPin corresponding stepper motor DIR pin   stepperPin corresponding stepper motor " step " pin   Step number of step of no return value.<br/><br/>* /<br/>void step (boolean dir  byte dirPin  byte stepperPin  int steps)<br/>{<br/>digitalWrite (dirPin  dir);<br/>delay (50);<br/>for (int i = 0; i digitalWrite (stepperPin  HIGH);<br/>delayMicroseconds (800);<br/>digitalWrite (stepperPin  LOW);<br/>delayMicroseconds (800);<br/>}<br/>}<br/>void setup () {/ / The stepper motor used in the IO pin is set to output<br/>pinMode (X_DIR  OUTPUT); pinMode (X_STP  OUTPUT);<br/>pinMode (Y_DIR  OUTPUT); pinMode (Y_STP  OUTPUT);<br/>pinMode (Z_DIR  OUTPUT); pinMode (Z_STP  OUTPUT);<br/>pinMode (EN  OUTPUT);<br/>digitalWrite (EN  LOW);<br/>}<br/>void loop () {<br/>step (false  X_DIR  X_STP  200); / / X axis motor reverse 1 ring  the 200 step is a circle.<br/>step (false  Y_DIR  Y_STP  200); / / y axis motor reverse 1 ring  the 200 step is a circle.<br/>step (false  Z_DIR  Z_STP  200); / / z axis motor reverse 1 ring  the 200 step is a circle.<br/>delay (1000);<br/>step (true  X_DIR  X_STP  200); / / X axis motor forward 1 laps  the 200 step is a circle.<br/>step (true  Y_DIR  Y_STP  200); / / y axis motor forward 1 laps  the 200 step is a circle.<br/>step (true  Z_DIR  Z_STP  200); / / z axis motor forward 1 laps  the 200 step is a circle.<br/>delay (1000);<br/>}<br/><br/>Note: When inserting the A4988 module  must be careful not to insert opposite. Stepper motor wiring as follows:<br/>2A  2B is a group (red  green)  1A  1B is a group (blue  yellow)  if want to change direction  can be change the position of one group   for example 2A  2B mutually exchanged.