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    walk_porto

    @walk_porto

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    Latest posts made by walk_porto

    • RE: Air Quality Sensor

      Hello everybody,

      I am working with an Arduino Uno and a MQ135 module arduino : http://www.sainsmart.com/sainsmart-mq135-sensor-air-quality-sensor-hazardous-gas-detection-module-arduino.html

      I can get back data from this sensor, I got 100 ppm when I launched serial terminal after compiling and uploading this code below.

      int sensorValue;
      
      void setup()
      {
        Serial.begin(9600);      // sets the serial port to 9600
      }
      
      void loop()
      {
        sensorValue = analogRead(0);       // read analog input pin 0
        Serial.println(sensorValue, DEC);  // prints the value read
        delay(100);                        // wait 100ms for next reading
      }
      

      But, I would like to get back data from gases like NH3, NOx, alcohol, benzene, smoke and CO2 . I read a lot of topics and the datasheets of the sensor but I don't see how to do.

      If someone could help me, it will be great.

      Thanks.

      posted in Hardware
      walk_porto
      walk_porto