removed unnecessary code

src/C++/Driver/src/Sensors/Sensors.ino

@@ -20,8 +20,8 @@ void loop() {
   int mq5Value = analogRead(MQ5_PIN);
 
   // if sensor isn't connected properly display error message
-  if (isnan(h) || isnan(t)) {
-    Serial.println("Fout bij het lezen van de sensor!");
+  if (isnan(h) || isnan(t) || isnan(mq5Value)) {
+    Serial.println("Fout bij het lezen van de sensors!");
     return;
   }
   // puts sensor values in the serial monitor

src/C++/Driver/src/TestM5.cpp

@@ -1,31 +0,0 @@
-#include <M5Stack.h>           
-#include <Wire.h>              
-#include "Adafruit_SGP30.h"    
-
-Adafruit_SGP30 sgp;
-
-void setup() {
-    M5.begin();                   
-    Serial.begin(9600);         
-
-    
-    if (!sgp.begin()) {
-        Serial.println("SGP30 sensor niet gevonden :(");
-        while (1);
-    }
-    Serial.println("SGP30 sensor gevonden!");
-}
-
-void loop() {
-    delay(1000);
-
-    if (!sgp.IAQmeasure()) {
-        Serial.println("Error bij meting!");
-        return;
-    }
-    Serial.print("eCO2: ");
-    Serial.print(sgp.eCO2);
-    Serial.print(" ppm\tTVOC: ");
-    Serial.print(sgp.TVOC);
-    Serial.println(" ppb");
-}

src/C++/Driver/src/TestM5/TestM5.ino

@@ -0,0 +1,38 @@
+#include <Wire.h>
+#include "Adafruit_SGP30.h"
+
+Adafruit_SGP30 sgp;
+
+#define SDA_PIN 10
+#define SCL_PIN 11
+
+void setup() {
+  Serial.begin(115200);
+  while (!Serial) { delay(10); }
+
+  Wire.begin(SDA_PIN, SCL_PIN);
+
+  Serial.println("SGP30 test");
+
+  if (!sgp.begin()) {
+    Serial.println("SGP30 sensor not found :(");
+    while (1);
+  }
+
+  // Start measurements (initialize baseline)
+  if (! sgp.IAQinit()) {
+    Serial.println("SGP30 IAQinit failed!");
+    while (1);
+  }
+}
+
+void loop() {
+  if (! sgp.IAQmeasure()) {
+    Serial.println("Measurement failed");
+    return;
+  }
+  Serial.print("TVOC "); Serial.print(sgp.TVOC); Serial.print(" ppb\t");
+  Serial.print("eCO2 "); Serial.print(sgp.eCO2); Serial.println(" ppm");
+
+  delay(1000); // 1 second delay
+}