stepper-test-dual.ino

#include <AccelStepper.h>
#define HALFSTEP 8

// Motor pin definitions
#define motorPin1  2    // IN1 on the ULN2003 driver 1
#define motorPin2  3     // IN2 on the ULN2003 driver 1
#define motorPin3  4     // IN3 on the ULN2003 driver 1
#define motorPin4  5     // IN4 on the ULN2003 driver 1

#define motorPin5  6     // IN1 on the ULN2003 driver 1
#define motorPin6  7   // IN2 on the ULN2003 driver 1
#define motorPin7  8     // IN3 on the ULN2003 driver 1
#define motorPin8  9    // IN4 on the 


// Initialize with pin sequence IN1-IN3-IN2-IN4 for using the AccelStepper with 28BYJ-48
AccelStepper stepper1(HALFSTEP, motorPin1, motorPin3, motorPin2, motorPin4);
AccelStepper stepper2(HALFSTEP, motorPin5, motorPin7, motorPin6, motorPin8);



void setup() {
  stepper1.setMaxSpeed(1000.0);
  stepper1.setAcceleration(1000.0);
  stepper1.setSpeed(400);
  stepper1.moveTo(2048);

stepper2.setMaxSpeed(1000.0);
  stepper2.setAcceleration(1000.0);
  stepper2.setSpeed(400);
  stepper2.moveTo(-2048);


}//--(end setup )---

void loop() {

  //Change direction when the stepper reaches the target position
  if (stepper1.distanceToGo() == 0&& stepper2.distanceToGo() == 0) {
    stepper1.moveTo(-stepper1.currentPosition());
    stepper2.moveTo(-stepper2.currentPosition());
  }
  stepper1.run();
  stepper2.run();
}