//exercicio 3
//Gabriel Lisboa Leite de Melo




#define PIN_TRIG 3
#define PIN_ECHO 2
#define led1 9
#define led2 10

void setup() {

  Serial.begin(115200);
  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
}

void loop() {
  // Inicia uma nova medição:
  digitalWrite(PIN_TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIG, LOW);
   int duration = pulseIn(PIN_ECHO, HIGH);

 int distanciaCM = (duration/58);

 if(distanciaCM > 180){
  digitalWrite(led2, 1);
 }


  if(distanciaCM <= 180){
    delay(5000);
    digitalWrite(led1, 1);
    digitalWrite(led2, 0);
  }
  else{
    digitalWrite(led1, 0);
  }
}