diff --git a/firmware/config_user.h.example b/firmware/config_user.h.example
index 7bdc598..d5e2ad3 100644
--- a/firmware/config_user.h.example
+++ b/firmware/config_user.h.example
@@ -9,6 +9,8 @@
 
 // Enable/Disable features
 //#define WEBUPDATER_FEATURE
+#define INFLUXDB_FEATURE
+#define SERIAL_FEATURE
 #define BATTERY_POWERED
 #define SENSOR_WIND
 #define SENSOR_APDS9960
diff --git a/firmware/firmware.ino b/firmware/firmware.ino
index 3111d48..e53531a 100644
--- a/firmware/firmware.ino
+++ b/firmware/firmware.ino
@@ -17,7 +17,6 @@
 // folder in order to use the libs. (File -> Preferences -> Sketchbook Location)
 #include <WiFiClient.h>          // WiFiClient
 #include <WiFiManager.h>         // WiFiManager
-#include <ESP8266Influxdb.h>     // https://github.com/hwwong/ESP8266Influxdb auchecken und den ordner in das arduino\library verzeichnis kopieren
 
 // Project includes
 #include "config.h"
@@ -55,7 +54,6 @@ uint16_t update_sensor_cnt      = 0;
 uint16_t update_webserver_cnt   = 0;
 
 WiFiManager wifiManager;
-Influxdb influxdb(INFLUXDB_HOST, INFLUXDB_PORT);
 
 #ifdef WEBUPDATER_FEATURE
 String localIP = "127.0.0.1";
@@ -76,7 +74,7 @@ void setup() {
   //delay(2000);
   //ESP.reset();
 
-#ifdef DEBUG
+#if defined(DEBUG) || defined(SERIAL_FEATURE)
   Serial.begin(115200);
 #endif
 
@@ -108,8 +106,9 @@ void setup() {
 
   debug("Connected!");
 
-  // Init variables to influxdb config - doesn't talk to database
-  influxdb.opendb(INFLUXDB_DB, INFLUXDB_USER, INFLUXDB_PASS);
+#ifdef INFLUXDB_FEATURE
+  influxdb_begin();
+#endif
 
   // Initialize and configure the sensors
 #ifdef SENSOR_APDS9930
@@ -242,24 +241,30 @@ void _loop() {
     }
   }
 
-    debug("");
-    debug("Current readings:");
-    debug("Temperature: " + String(currentSensorData[SENSOR_TEMPERATURE]) + " °C");
-    debug("Humidity: " + String(currentSensorData[SENSOR_HUMIDITY]) + " %");
-    debug("Light: " + String(currentSensorData[SENSOR_LIGHT]) + " Lux");
-    debug("Windspeed: " + String(currentSensorData[SENSOR_WINDSPEED]) + " km/h");
-    debug("Pressure: " + String(currentSensorData[SENSOR_PRESSURE]) + " hPa");
-    debug("Bat Voltage: " + String(currentSensorData[SENSOR_BAT_VOLTAGE]) + " V");
-    debug("Bat charge state: " + String(currentSensorData[SENSOR_BATCHARGESTATE]));
-    debug("Energy saving: " + String(currentSensorData[SENSOR_ESAVEMODE]));
+#ifdef SERIAL_FEATURE
+  logToSerial(currentSensorData);
+#endif
 
-    delay(100);
+  delay(100);
 
-    pushToInfluxDB(DEVICE_NAME, currentSensorData);
+#ifdef INFLUXDB_FEATURE
+  pushToInfluxDB(DEVICE_NAME, currentSensorData);
+#endif
 
 #ifdef WEBUPDATER_FEATURE
-    setSensorData(DEVICE_NAME, localIP, currentSensorData);
+  setSensorData(DEVICE_NAME, localIP, currentSensorData);
 #endif
 }
 
-//*************************************************************************//
+void logToSerial(float sensorValues[]) {
+  Serial.println("");
+  Serial.println("Current readings:");
+  Serial.println("Temperature: " + String(sensorValues[SENSOR_TEMPERATURE]) + " °C");
+  Serial.println("Humidity: " + String(sensorValues[SENSOR_HUMIDITY]) + " %");
+  Serial.println("Light: " + String(sensorValues[SENSOR_LIGHT]) + " Lux");
+  Serial.println("Windspeed: " + String(sensorValues[SENSOR_WINDSPEED]) + " km/h");
+  Serial.println("Pressure: " + String(sensorValues[SENSOR_PRESSURE]) + " hPa");
+  Serial.println("Bat Voltage: " + String(sensorValues[SENSOR_BAT_VOLTAGE]) + " V");
+  Serial.println("Bat charge state: " + String(sensorValues[SENSOR_BATCHARGESTATE]));
+  Serial.println("Energy saving: " + String(sensorValues[SENSOR_ESAVEMODE]));
+}
diff --git a/firmware/influxdb.ino b/firmware/influxdb.ino
index d63e166..8d1ebde 100644
--- a/firmware/influxdb.ino
+++ b/firmware/influxdb.ino
@@ -1,5 +1,13 @@
-void pushToInfluxDB(String device, float sensorValues[]) {
+#include <ESP8266Influxdb.h>     // https://github.com/hwwong/ESP8266Influxdb
 
+Influxdb _influxdb(INFLUXDB_HOST, INFLUXDB_PORT);
+
+void influxdb_begin() {
+  // Init variables to influxdb config - doesn't talk to database
+  _influxdb.opendb(INFLUXDB_DB, INFLUXDB_USER, INFLUXDB_PASS);
+}
+
+void pushToInfluxDB(String device, float sensorValues[]) {
   uint8_t tries = 0;
   boolean addComma = false;
 
@@ -59,12 +67,10 @@ void pushToInfluxDB(String device, float sensorValues[]) {
     addComma = true;
   }
 
-#ifdef DEBUG
-  Serial.println(msg);
-#endif
+  debug(msg);
 
   do {
     tries++;
-    influxdb.write(msg);
-  } while (influxdb.response() != DB_SUCCESS and tries < 5);
+    _influxdb.write(msg);
+  } while (_influxdb.response() != DB_SUCCESS and tries < 5);
 }