// Motor de passo 
#include <Stepper.h>

const int stepsPerRevolution = 200;  // change this to fit the number of steps per revolution
// for your motor

// initialize the stepper library on pins 8 through 11:
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);

void setup() {
  velocidade();
  // initialize the serial port:
  Serial.begin(9600);
}

void velocidade( ){
// set the speed at 60 rpm:
  myStepper.setSpeed(60);

}

void rot_horario(){
// step one revolution  in one direction:
  Serial.println("horario");
  myStepper.step(stepsPerRevolution);
  //delay(500);

}
void rot_anti_horario(){
// step one revolution in the other direction:
  Serial.println("anti-horario");
  myStepper.step(-stepsPerRevolution);
  delay(500);  
}
void loop() {
  rot_horario();
  rot_anti_horario();
 
}