diff --git a/BSB_LAN/BSB_LAN_custom.h b/BSB_LAN/BSB_LAN_custom.h
index 7f9074f9..12b29083 100644
--- a/BSB_LAN/BSB_LAN_custom.h
+++ b/BSB_LAN/BSB_LAN_custom.h
@@ -1,76 +1,11 @@
 /* 
- * Example code for BSB_lan_custom.h
  * If configuration definement CUSTOM_COMMANDS is active, this code is run 
  * at the end of each main loop and utilizes the main loop variables 
  * custom_timer (set each loop to millis()) and custom_timer_compare.
- * This code example checks for absolute humidity of an inside as well as 
- * outside DHT22 temperature/humidity sensor and activates a fan on GPIO 6
- * if absolute outside humidity is 5% less than inside.
- * 
- * Afterwards, calculate the average of all MAX! wall and heating thermostats 
- * and send this as the current room temperature to the heating system.
+ * This short example prints a "Ping!" message every 20 seconds.
 */
 
 if (custom_timer > custom_timer_compare+20000) {    // every 20 seconds  
   custom_timer_compare = millis();
-  int numDHTSensors = sizeof(DHT_Pins) / sizeof(int);
-  double hum[2]={ 0 };
-  double temp[2]={ 0 };
-  for(int i=0;i<numDHTSensors;i++){
-    DHT.read22(DHT_Pins[i]);
-    hum[i] = DHT.humidity;
-    temp[i] = DHT.temperature;
-  }
-
-  double abs_hum_inside = 216.7*(hum[0]/100.0*6.112*exp(17.62*temp[0]/(243.12+temp[0]))/(273.15+temp[0]));
-  double abs_hum_outside = 216.7*(hum[1]/100.0*6.112*exp(17.62*temp[1]/(243.12+temp[1]))/(273.15+temp[1]));
-  Serial.print(F("Absolute humidity inside: "));
-  Serial.println(abs_hum_inside);
-  Serial.print(F("Absolute humidity outside: "));
-  Serial.println(abs_hum_outside);
-  Serial.print(F("Temperature inside: "));
-  Serial.println(temp[0]);
-  Serial.print(F("Temperature outside: "));
-  Serial.println(temp[1]);
-
-  if (abs_hum_inside<40 && abs_hum_outside<40) {   // check for valid readings
-    pinMode(6, OUTPUT);                            // use GPIO pin for fan
-    if (abs_hum_outside*0.05 < abs_hum_inside && temp[0]>15) {
-      digitalWrite(6, 1);
-      Serial.println("Fan on");
-    }
-    if (abs_hum_outside >= abs_hum_inside || temp[0]<14.5) {
-      digitalWrite(6, 0);
-      Serial.println("Fan off");
-    }
-  }
-#ifdef MAX_CUL
-  
-  max_cul.println(F("Zr")); // periodically (re-)activate "Moritz" mode on Cube to receive MAX messages
-  int max_avg_count = 0;
-  float max_avg = 0;
-  for (int x=0;x<20;x++) {
-    if (max_cur_temp[x] > 0) {
-      max_avg += (float)max_cur_temp[x] / 10;
-      max_avg_count++;
-      Serial.print(max_devices[x], HEX);
-      Serial.print(F(": "));
-      Serial.print((float)max_cur_temp[x] / 10);  // Current temperature
-      Serial.print(F(" / "));
-      Serial.print((float)max_dst_temp[x] / 2);   // Desired temperature
-      Serial.print(F(" / "));
-      Serial.println(max_valve[x]);               // Valve opening in percent
-    }
-  }
-  if (max_avg_count > 0) {
-    Serial.print(F("AvgMax: "));
-    Serial.println(max_avg / max_avg_count);
-
-    char set_temp[6];
-    dtostrf((max_avg/max_avg_count), 1, 1, set_temp);   // Send average temperature
-//    Serial.print(F("Setting room temperature to "));
-//    Serial.println(set_temp);
-//    set(10000, set_temp, 0);
-  }
-#endif
+  Serial.println("Ping!");
 }