diff --git a/examples/knx-bme680/knx-bme680.ino b/examples/knx-bme680/knx-bme680.ino
index 3342d26..465f4cd 100644
--- a/examples/knx-bme680/knx-bme680.ino
+++ b/examples/knx-bme680/knx-bme680.ino
@@ -58,8 +58,10 @@ void setup(void)
     if(knx.configured())
         goTriggerSample.callback(triggerCallback);
 
-    // depends on sensor board. Try BME680_I2C_ADDR_PRIMARY if it doen't work.
+
     // Configure Wire pins before this call if needed.
+    Wire.begin();
+    // depends on sensor board. Try BME680_I2C_ADDR_PRIMARY if it doen't work.
     iaqSensor.begin(BME680_I2C_ADDR_SECONDARY, Wire);
     checkIaqSensorStatus();
 
diff --git a/src/knx/knx_value.cpp b/src/knx/knx_value.cpp
index f9b8954..4985085 100644
--- a/src/knx/knx_value.cpp
+++ b/src/knx/knx_value.cpp
@@ -528,4 +528,20 @@ struct tm KNXValue::timeValue() const
     }
     struct tm tmp;
     return tmp;
+}
+
+KNXValue::KNXValue(float value)
+{
+}
+
+KNXValue& KNXValue::operator=(const float value)
+{
+    _value.doubleValue = value;
+    _type = DoubleType;
+    return *this;
+}
+
+KNXValue::operator float() const
+{
+    return doubleValue();
 }
\ No newline at end of file
diff --git a/src/knx/knx_value.h b/src/knx/knx_value.h
index d03f804..e0e5792 100644
--- a/src/knx/knx_value.h
+++ b/src/knx/knx_value.h
@@ -18,6 +18,7 @@ class KNXValue
     KNXValue(double value);
     KNXValue(const char* value);
     KNXValue(struct tm value);
+    KNXValue(float value);
 
     operator bool() const;
     operator uint8_t() const;
@@ -31,6 +32,7 @@ class KNXValue
     operator double() const;
     operator const char*() const;
     operator struct tm() const;
+    operator float() const;
 
     KNXValue& operator=(const bool value);
     KNXValue& operator=(const uint8_t value);
@@ -44,6 +46,8 @@ class KNXValue
     KNXValue& operator=(const double value);
     KNXValue& operator=(const char* value);
     KNXValue& operator=(const struct tm value);
+    KNXValue& operator=(const float value);
+
   private:
     
     bool boolValue() const;
@@ -88,7 +92,7 @@ class KNXValue
         LongType,
         DoubleType,
         StringType,
-        TimeType
+        TimeType,
     };
 
     ValueType _type;
diff --git a/visualstudio/knx-bme680.vgdbproj b/visualstudio/knx-bme680.vgdbproj
index 5e13a48..2998acb 100644
--- a/visualstudio/knx-bme680.vgdbproj
+++ b/visualstudio/knx-bme680.vgdbproj
@@ -224,6 +224,7 @@
       </DebugSettingsOverride>
       <BuildSettingsExtension xsi:type="com.visualgdb.build.external.arduino.extension">
         <BoardID>esp8266:esp8266:nodemcuv2</BoardID>
+        <COMPort>COM4</COMPort>
         <Properties>
           <Entries>
             <KeyValue>
@@ -240,7 +241,7 @@
             </KeyValue>
             <KeyValue>
               <Key>ssl</Key>
-              <Value>all</Value>
+              <Value>basic</Value>
             </KeyValue>
             <KeyValue>
               <Key>eesz</Key>