#include <AccelStepper.h>

const int limitSwitch_Up = A0;
const int limitSwitch_Down = A1;
const int button_Up = A2;
const int button_down = A3;
const int limitSwitch_stop = A4;

AccelStepper stepper(1, 7, 6);

void setup() {
  // put your setup code here, to run once:
  stepper.setMaxSpeed(5000);
  stepper.setAcceleration(1000);
  stepper.setSpeed(1500);
}

void loop() {
  // put your main code here, to run repeatedly:
stepper.runSpeed()
}