Accelstepper function

If you want it to run only once in loop:

void loop()
{
  static boolean runOnce = true;
  
  if (runOnce)
  {
  stepper1.move(3000);
  stepper1.runToPosition();
  stepper1.move(-500);
  stepper1.runToPosition();
  runOnce = false;
  }
}