diff --git a/arduino/node-code/node-code-final.ino b/arduino/node-code/node-code-final.ino
index 2dc8896..475d905 100644
--- a/arduino/node-code/node-code-final.ino
+++ b/arduino/node-code/node-code-final.ino
@@ -148,6 +148,8 @@ bool checkForError(){
 void update(){
   // display sensordata on oled screen
   displayData();
+
+  // send data to websocket server
   webSocket.sendTXT("Temp: " + String(temperature));
   webSocket.sendTXT("Humi: " + String(humidity));
   webSocket.sendTXT("eCO2: " + String(sgp.eCO2));
@@ -159,6 +161,7 @@ void update(){
   temperature = float(dht.readTemperature());
   humidity = float(dht.readHumidity());
 
+  // check if any errors occured when reading sensors
   checkForError();
 }
 
@@ -177,12 +180,14 @@ void displayData() {
     + "Humi: " + int(humidity) + "%" + '\n'
     + "eCO2: " + int(sgp.eCO2) + '\n'
     + "TVOC: " + int(sgp.TVOC));
-                  
+
+  // display the screen                
   display.display();
 }
 
 // setup function
 void setup() {
+  // make serial connection at 115200 baud
   Serial.begin(115200);
 
   // tell display what settings to use
@@ -196,7 +201,10 @@ void setup() {
   pinMode(MICPIN, INPUT);
   pinMode(DHTPIN, INPUT);
   
+  // setup websocket connection
   websocketSetup();
+
+  // reset values
   resetValues();
 }