diff --git a/examples/knx-demo/knx-demo.ino b/examples/knx-demo/knx-demo.ino
index fae29b3..15dff44 100644
--- a/examples/knx-demo/knx-demo.ino
+++ b/examples/knx-demo/knx-demo.ino
@@ -1,5 +1,8 @@
 #include <knx.h>
 
+#ifdef ARDUINO_ARCH_ESP8266
+#include <WiFiManager.h>
+#endif
 
 // create named references for easy access to group objects
 #define goCurrent knx.getGroupObject(1)
@@ -55,6 +58,11 @@ void setup()
     SerialDBG.begin(115200);
 
     randomSeed(millis());
+	
+    #ifdef ARDUINO_ARCH_ESP8266
+    WiFiManager wifiManager;    
+    wifiManager.autoConnect("knx-demo");
+    #endif
 
     // read adress table, association table, groupobject table and parameters from eeprom
     knx.readMemory();
@@ -71,6 +79,17 @@ void setup()
         SerialDBG.print("Aenderung senden: "); SerialDBG.println(knx.paramByte(3));
         SerialDBG.print("Abgleich: "); SerialDBG.println(knx.paramByte(4));
     }
+	
+    #ifdef ARDUINO_ARCH_ESP8266
+    // GPIO (?) of the ESP8266, in which case this is determined by the board selection
+    knx.ledPin(LED_BUILTIN);
+    // GPIO (?) of the ESP8266, the value depends on the circuit used on the board of the led
+    //                          if "0" or "low" then the output switches to gnd, at "1" or "high" the output switches to vcc
+    //                          if the next line is commented out then the default is: output switches to gnd
+    //knx.ledPinActiveOn(HIGH);
+    // GPIO (14) of the ESP8266, in which case it is the connector pin D5 on WeMos D1 R2
+    knx.buttonPin(14);
+    #endif
 
     // start the framework. Will get wifi first.
     knx.start();
diff --git a/src/knx_facade.cpp b/src/knx_facade.cpp
index 3ee68a9..020389a 100644
--- a/src/knx_facade.cpp
+++ b/src/knx_facade.cpp
@@ -1,37 +1,43 @@
 #include "knx_facade.h"
 
-#include "knx/bits.h"
-
 #ifdef ARDUINO_ARCH_SAMD
 SamdPlatform platform;
 Bau07B0 bau(platform);
-#elif ARDUINO_ARCH_ESP8266
+#else
 EspPlatform platform;
 Bau57B0 bau(platform);
-#elif __linux__ //linux
-// noops on linux
-#define digitalWrite(a, b)
-#define pinMode(a, b)
-#define attachInterrupt(a, b, c)
 #endif
-
-#ifndef __linux__
 KnxFacade knx(bau);
 
+#include "knx/bits.h"
+
 void buttonUp()
 {
     if (knx.progMode())
     {
-        digitalWrite(knx.ledPin(), LOW);
+		if (knx.ledPinActiveOn())
+		{
+			digitalWrite(knx.ledPin(), HIGH);
+		}
+		else
+		{
+			digitalWrite(knx.ledPin(), LOW);
+		}
         knx.progMode(false);
     }
     else
     {
-        digitalWrite(knx.ledPin(), HIGH);
+		if (knx.ledPinActiveOn())
+		{
+			digitalWrite(knx.ledPin(), LOW);
+		}
+		else
+		{
+			digitalWrite(knx.ledPin(), HIGH);
+		}
         knx.progMode(true);
     }
 }
-#endif
 
 KnxFacade::KnxFacade(BauSystemB& bau) : _bau(bau)
 {
@@ -56,12 +62,14 @@ bool KnxFacade::progMode()
 
 void KnxFacade::progMode(bool value)
 {
-    print("progmode ");
-    if (value)
-        println("on");
-    else
-        println("off");
-
+	if (value)
+	{
+		println("progmode on");
+	}
+	else
+	{
+		println("progmode off");
+	}
     _bau.deviceObject().progMode(value);
 }
 
@@ -70,6 +78,16 @@ bool KnxFacade::configured()
     return _bau.configured();
 }
 
+bool KnxFacade::ledPinActiveOn()
+{
+    return _ledPinActiveOn;
+}
+
+void KnxFacade::ledPinActiveOn(bool value)
+{
+    _ledPinActiveOn = value;
+}
+
 uint32_t KnxFacade::ledPin()
 {
     return _ledPin;
@@ -115,11 +133,6 @@ void KnxFacade::bauNumber(uint32_t value)
     _bau.deviceObject().bauNumber(value);
 }
 
-uint16_t KnxFacade::induvidualAddress()
-{
-    return _bau.deviceObject().induvidualAddress();
-}
-
 void KnxFacade::orderNumber(const char* value)
 {
     _bau.deviceObject().orderNumber(value);
@@ -138,6 +151,15 @@ void KnxFacade::version(uint16_t value)
 void KnxFacade::start()
 {
     pinMode(_ledPin, OUTPUT);
+	
+	if (knx.ledPinActiveOn())
+	{
+		digitalWrite(_ledPin, HIGH);
+	}
+	else
+	{
+		digitalWrite(_ledPin, LOW);
+	}
 
     pinMode(_buttonPin, INPUT_PULLUP);
     
diff --git a/src/knx_facade.h b/src/knx_facade.h
index 5604af2..35ec721 100644
--- a/src/knx_facade.h
+++ b/src/knx_facade.h
@@ -3,15 +3,12 @@
 #ifdef ARDUINO_ARCH_SAMD
 #include "samd_platform.h"
 #include "knx/bau07B0.h"
-#elif ARDUINO_ARCH_ESP8266
-#include "esp_platform.h"
-#include "knx/bau57B0.h"
-#else
-#include "linux_platform.h"
-#include "knx/bau57B0.h"
-#define LED_BUILTIN 0
 #endif
 
+#ifdef ARDUINO_ARCH_ESP8266
+#include "esp_platform.h"
+#include "knx/bau57B0.h"
+#endif
 
 
 typedef uint8_t* (*saveRestoreCallback)(uint8_t* buffer);
@@ -25,13 +22,20 @@ public:
     bool progMode();
     void progMode(bool value);
     bool configured();
+	bool ledPinActiveOn();
+	/**
+     * @brief To adapt the output to hardware.
+	 *
+	 * @param ledPinActiveOn = "0" or "low"  --> GPIO--LED--RESISTOR--VDD (for example NODE MCU)
+	 * @param ledPinActiveOn = "1" or "high" --> GPIO--RESISTOR--LED--GND (for example WeMos D1 R2)
+     */
+    void ledPinActiveOn(bool value);
     uint32_t ledPin();
     void ledPin(uint32_t value);
     uint32_t buttonPin();
     void buttonPin(uint32_t value);
     void readMemory();
     void writeMemory();
-    uint16_t induvidualAddress();
     void loop();
     void manufacturerId(uint16_t value);
     void bauNumber(uint32_t value);
@@ -48,6 +52,7 @@ public:
     GroupObject& getGroupObject(uint16_t goNr);
 private:
     BauSystemB& _bau;
+	bool _ledPinActiveOn = 0;
     uint32_t _ledPin = LED_BUILTIN;
     uint32_t _buttonPin = 0;
 #ifdef USE_STATES
@@ -60,6 +65,4 @@ private:
     uint8_t* restore(uint8_t* buffer);
 };
 
-#ifndef __linux__
 extern KnxFacade knx;
-#endif
\ No newline at end of file