int moch_pin = 14;

void setup() {
  Serial.begin(115200);
  pinMode(moch_pin, INPUT);
}

void loop() {
  int moch_state = digitalRead(moch_pin);
  if (moch_state == HIGH) Serial.println("Canal obstruído");
  else Serial.println("Canal livre"); 
  delay(10); // this speeds up the simulation
}