const int Ap=10;
const int An=11;
const int Bp=9;
const int Bn=8;

void setup() {
  pinMode(Ap, OUTPUT);
  pinMode(An, OUTPUT);
  pinMode(Bp, OUTPUT);
  pinMode(Bn, OUTPUT);


}
//Acionamento em wave drive (uma bobina por vez).
void loop() {
  digitalWrite(Ap,1);
  digitalWrite(An,0);
  digitalWrite(Bp,0);
  digitalWrite(Bn,0);
  delay(50);

  digitalWrite(Ap,0);
  digitalWrite(An,0);
  digitalWrite(Bp,1);
  digitalWrite(Bn,0);
  delay(50);

  digitalWrite(Ap,0);
  digitalWrite(An,1);
  digitalWrite(Bp,0);
  digitalWrite(Bn,0);
  delay(50);

  digitalWrite(Ap,0);
  digitalWrite(An,0);
  digitalWrite(Bp,0);
  digitalWrite(Bn,1);
  delay(50);

}