     Serial.print(",");
     Serial.print(vol_Formol,3);
     Serial.println("");
+    
+    // no need to include any SD library as Open Hardware SD Logger works as a standalone arduino and records all serial output
+    
   }
   {
     SeeedOled.clearDisplay();

float concentration = 0;
int sensorValue = 0;

#define DHTPIN A2
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);

void setup() {

    SeeedOled.setTextXY(4, 8);
    SeeedOled.putString("mg/m^3");

    SeeedOled.setTextXY(5, 1); // location of text , fifth row, first collumn
    SeeedOled.putString("Volatile OC:");
    SeeedOled.setTextXY(6, 1); // location to display variable
    SeeedOled.putFloat(vol,3); // variable to display
    SeeedOled.setTextXY(6, 8);
    SeeedOled.putString("mg/L");

    delay(2000); // screen delay to allow reading in the OLED

    SeeedOled.clearDisplay();
    SeeedOled.setTextXY(1, 1);
