#include <Stepper.h>

const int stepsPerRevolution = 200*4;
Stepper myStepper(stepsPerRevolution, 8, 7);
const int delayMS = 0;
int btnTimer;


void setup() {
  myStepper.setSpeed(60);
  Serial.begin(9600);
}

bool flag = false;

void loop() {
  if (Serial.available()) {
    int a = Serial.parseInt();
    if (a == 1){
      myStepper.step(stepsPerRevolution);
      myStepper.step(10);
      delay(delayMS);
    }

    else if (a == 2){
      myStepper.step(-stepsPerRevolution);
      myStepper.step(10);
      delay(delayMS);
    }
  }
}