diff --git a/src/main.cpp b/src/main.cpp
index aceadb0..262c4ab 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -36,6 +36,7 @@ Adafruit_BME280 bme; // I2C (also available: hardware SPI
 //HardwareSerial Serial2(2);
 SdsDustSensor sds(Serial2);
 
+XD0OTA ota("esp32-weatherstation");
 XD0MQTT mqtt;
 
 uint32_t lastDisplayUpdate = 0;
@@ -153,7 +154,6 @@ void setup()
   }
 
   ESP_LOGD(TAG, "trying to fetch over-the-air update");
-  XD0OTA ota("esp32-weatherstation");
   ota.update();
 
   ESP_LOGD(TAG, "connecting to MQTT");
@@ -197,6 +197,17 @@ void loop()
     }
     while (display.nextPage());
     display.powerOff();
+
+    /* send values MQTT */
+    String topic_temperature = String("thomas/sensor/") + ota.getMAC() + String("/temperature");
+    String topic_humidity = String("thomas/sensor/") + ota.getMAC() + String("/humidity");
+    String topic_pressure = String("thomas/sensor/") + ota.getMAC() + String("/pressure");
+    char temperature[8]; sprintf(temperature, "%.2f", bme.readTemperature());
+    char humidity[7]; sprintf(humidity, "%.2f", bme.readHumidity());
+    char pressure[8]; sprintf(pressure, "%.2f", bme.readPressure() / 100.0F);
+    mqtt.publish(topic_temperature.c_str(), temperature, sizeof(temperature));
+    mqtt.publish(topic_humidity.c_str(), humidity, sizeof(humidity));
+    mqtt.publish(topic_pressure.c_str(), pressure, sizeof(pressure));
   }
 /*
   unsigned long endTime = bme.beginReading();
diff --git a/src/network/XD0MQTT.cpp b/src/network/XD0MQTT.cpp
index 7c64c62..91289f6 100644
--- a/src/network/XD0MQTT.cpp
+++ b/src/network/XD0MQTT.cpp
@@ -109,7 +109,7 @@ bool XD0MQTT::begin(void) {
     return true;
 }
 
-bool XD0MQTT::publish(const char* topic, const char* data, int len, int qos=1, int retain=0) {
+bool XD0MQTT::publish(const char* topic, const char* data, int len, int qos, int retain) {
   int msg_id = esp_mqtt_client_publish(client, topic, data, len, qos, retain);
   ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
 }
diff --git a/src/network/XD0MQTT.h b/src/network/XD0MQTT.h
index 83be9f5..8950770 100644
--- a/src/network/XD0MQTT.h
+++ b/src/network/XD0MQTT.h
@@ -19,7 +19,7 @@ class XD0MQTT {
   public:
     XD0MQTT(void);
     bool begin(void);
-    bool publish(const char* topic, const char* data, int len, int qos, int retain);
+    bool publish(const char* topic, const char* data, int len, int qos=1, int retain=0);
   private:
     // openssl s_client -showcerts -connect home.xd0.de:8883 </dev/null 2>/dev/null|openssl x509 -outform PEM >mqtt_xd0.de.pem
     const char* rootCACertificate = \
diff --git a/src/network/XD0OTA.h b/src/network/XD0OTA.h
index b0554af..7436561 100644
--- a/src/network/XD0OTA.h
+++ b/src/network/XD0OTA.h
@@ -18,6 +18,7 @@ class XD0OTA {
     XD0OTA(String deviceName);
     void update(void);
     int checkForUpdates(String url);
+    String getMAC(void);
   private:
     String deviceName;
     const char* fwUrlBase = "https://fwupdate.xd0.de:444/fota/";
@@ -47,7 +48,6 @@ class XD0OTA {
       "D5Npv9M5363apnO1VlVR+OuO1NEJusRK1aWk9RLZsTPxzwOWwdkifXxUEJ+f8mGn\n" \
       "o+6SCw==\n" \
       "-----END CERTIFICATE-----\n";
-    String getMAC(void);
     String getUpdateURL(String file, String extension);
     void setClock(void);
 };