WTV020_UP_DOWN

#define Up    4  //Pino 13 clock
#define Down  5  //Pino 12 clock
char buf;
//-----------------------------
void setup()
{
  Serial.begin(9600);
  pinMode(Up, OUTPUT);
  pinMode(Down, OUTPUT);
}
//-----------------------------
void loop()
{
  if (Serial.available() > 0)
  {
    buf = Serial.read();
    delay(20);
  }
  if (buf == '1')
  {
    digitalWrite(Up, LOW);
    delay(100);
    digitalWrite(Up, HIGH);
    buf = 0;
  }
  if (buf == '2')
  {
    digitalWrite(Down, LOW);
    delay(100);
    digitalWrite(Down, HIGH);
    buf = 0;
  }
}