/*
#include <AccelStepper.h>
#include <AFMotor.h>

AF_Stepper motor1(4096, 2);


// you can change these to DOUBLE or INTERLEAVE or MICROSTEP!
void forwardstep() {  
  motor1.onestep(FORWARD, INTERLEAVE);
}
void backwardstep() {  
  motor1.onestep(BACKWARD, INTERLEAVE);
}

AccelStepper stepper(forwardstep, backwardstep); // use functions to step

void setup(){  
  //Serial.begin(115200);
  
  stepper.setMaxSpeed(5000);
  stepper.setSpeed(-900);  // Go Up
  //stepper.setSpeed(1000);  // Go Down
}


int stepper_speed = 0;

void loop(){  
  //accelerate(350, 900, 10);
  
  //Serial.println(stepper_speed);
  stepper.runSpeed();
}

void accelerate(int start_speed, int finish_speed, int speed_step) {
  
  if (stepper_speed < start_speed) {
    stepper_speed = start_speed;
  }

  static uint16_t last_millis;
  static uint16_t current_millis;
  current_millis = millis();

  if (current_millis-last_millis > 100) {
    stepper_speed += speed_step;
    last_millis = current_millis;
  }

  
  if (stepper_speed >= finish_speed) {
    stepper_speed = finish_speed;
  }
  
  stepper.setSpeed(-stepper_speed);
}

*/


#include <Stepper.h>

int in1Pin = 12;
int in2Pin = 11;
int in3Pin = 10;
int in4Pin = 9;

Stepper motor(32, in1Pin, in2Pin, in3Pin, in4Pin);  

void setup() {
  pinMode(in1Pin, OUTPUT);
  pinMode(in2Pin, OUTPUT);
  pinMode(in3Pin, OUTPUT);
  pinMode(in4Pin, OUTPUT);
  
  Serial.begin(9600);
  motor.setSpeed(500);
}

void loop()
{
  if (Serial.available()) {
    int steps = Serial.parseInt();
    Serial.println(steps);
    motor.step(steps);
  }
}