int sensor1;
int sensor2;
int i=0;





void setup()
{
  pinMode(2, INPUT); //sensor 1
  pinMode(4, INPUT); //sensor 2
  Serial.begin(9600);
}



void loop(){

  sensor1 = digitalRead(2);
  if (sensor1 == 0)
  {
     Serial.println("sensor1 acionado");

      while(sensor2 == 0){
    i++;
    delay(100);
      }

    }


    Serial.println("sensor2 acionado");
    Serial.println(i);
  }