added comments

arduino/node-code/nodeCodeFinal/nodeCodeFinal.ino

@@ -4,12 +4,10 @@ nodeReadings esp32Node;
 
 
 void setup() {
-    // put your setup code here, to run once:
     esp32Node.setup();
     esp32Node.resetValues();
 }
 
 void loop() {
-    // put your main code here, to run repeatedly:
     esp32Node.loop();
 }

arduino/node-code/nodeCodeFinal/nodeCodeHeader.cpp

@@ -2,16 +2,19 @@
 
 nodeReadings::nodeReadings() {
 
+  //Making all the new object as defined in the .h file
   dht = new DHT(DHTPIN, DHTTYPE);
   display = new Adafruit_SH1106G(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
-  webSocket = new websockets(); //nu naar eigen class 
+  webSocket = new websockets();
   sgp = new Adafruit_SGP30();
 
+  //setting the reding for every 5 sec
   interval = 5000;
   resetValues();  
 
 }
 
+//Script for simpley reseting every value to 0
 void nodeReadings::resetValues() {
     counter = 0;
     eCO2 = 0;
@@ -25,6 +28,7 @@ void nodeReadings::resetValues() {
     noise = false;
 }
 
+//Setup for initilising the dht and sgp sensors. Also the display is set up.
 void nodeReadings::setup(){
     // make serial connection at 115200 baud
     Serial.begin(115200);
@@ -63,6 +67,7 @@ void nodeReadings::update(){
   // display sensordata on oled screen
   displayData();
   
+  //send the data to the websockets
   webSocket->sendMyText("{\"node\": \"" + String(WiFi.macAddress()) + "\", \"Temp\":\"" + String(temperature) + "\",\"Humi\":\"" + String(humidity) + "\",\"eCO2\":\"" + String(sgp->eCO2) + "\",\"TVOC\":\"" + String(sgp->TVOC) + "\"}");
 
   sgp->getIAQBaseline(&eCO2_base, &TVOC_base);
@@ -90,6 +95,7 @@ void nodeReadings::displayData() {
   display->display();
 }
 
+//function 
 void nodeReadings::checkForError(){
   if (!sgp->IAQmeasure()) {
     Serial.println("SGP30: BAD");