AirQualitySensor.ino

int airSensorDig = 10;
int airSensorAnalog = 3;
int ppm_AirSensor = 0;
float tension_AirSensor = 0;
bool state_AirSensor = false;
String resultAirSensorPPM = "";

void setup()
{
}

void loop()
{
  AirSensorControl();

  delay(500);
}

void AirSensorControl()
{
  state_AirSensor = digitalRead(airSensorDig);
  ppm_AirSensor = analogRead(airSensorAnalog);
  tension_AirSensor = ppm_AirSensor * (5.0 / 1023.0);

  resultAirSensorPPM = "";
  resultAirSensorPPM.concat(ppm_AirSensor);
}