diff --git a/ConfigDataStructure.py b/ConfigDataStructure.py
index 81d8d45..7c4698d 100644
--- a/ConfigDataStructure.py
+++ b/ConfigDataStructure.py
@@ -10,6 +10,7 @@ configItems = [
     {"label":"MQTT Password", "key":"mqttPass", "type":"C", "length":32, "default":"geheim123"},
     {"label":"MQTT ClientId", "key":"mqttClientId", "type":"C", "length":32, "default":"RgbLed1"},
     {"label":"MQTT Port", "key":"mqttPort", "type":"I", "default":8883},
+    {"label":"MQTT Topic Flow Command", "key":"mqttTopicFlowCommand", "type":"C", "length":64, "default":"IoT/RgbLed1/FlowCommand"},
     {"label":"MQTT Topic Color Command", "key":"mqttTopicColorCommand", "type":"C", "length":64, "default":"IoT/RgbLed1/ColorCommand"},
     {"label":"MQTT Topic Command", "key":"mqttTopicCommand", "type":"C", "length":64, "default":"IoT/RgbLed1/Command"},
     {"label":"MQTT DebugTopic", "key":"mqttDebugTopic", "type":"C", "length":64, "default":"IoT/RgbLed1/Debug"},
diff --git a/application.cpp b/application.cpp
index fff1991..d80da1e 100644
--- a/application.cpp
+++ b/application.cpp
@@ -47,6 +47,58 @@ Adafruit_NeoPixel pixels(NUM_OF_LEDs, PIXEL_PIN, NEO_RGB + NEO_KHZ400);
 
 bool show = false;
 
+typedef enum {
+	E_FC_IDLE,
+	E_FC_ABORT,
+	E_FC_FADE_ON,
+	E_FC_FADE_OFF,
+} e_colorFlowCmds;
+
+e_colorFlowCmds colorFlowCmd = E_FC_IDLE;
+
+typedef enum {
+	E_FE_IDLE,
+	E_FE_INCREASE_BRIGHTNESS,
+	E_FE_DECREASE_BRIGHTNESS,
+} e_colorFlowStates;
+
+
+
+static void colorFlowEngine() {
+	e_colorFlowStates colorFlowState = E_FE_IDLE;
+
+	if (colorFlowCmd == E_FC_ABORT) {
+		colorFlowState = E_FE_IDLE;
+		colorFlowCmd = E_FC_IDLE;
+	}
+
+	switch (colorFlowState) {
+	case E_FE_IDLE:
+		switch (colorFlowCmd) {
+		case E_FC_FADE_ON:
+			colorFlowState = E_FE_INCREASE_BRIGHTNESS;
+			break;
+		case E_FC_FADE_OFF:
+			colorFlowState = E_FE_DECREASE_BRIGHTNESS;
+			break;
+		case E_FC_IDLE:
+		case E_FC_ABORT:
+		default:
+			break;
+		}
+		colorFlowCmd = E_FC_IDLE;
+		break;
+	case E_FE_INCREASE_BRIGHTNESS:
+		// fade up
+		show = true;
+		break;
+	case E_FE_DECREASE_BRIGHTNESS:
+		// fade down
+		show = true;
+		break;
+	}
+}
+
 
 
 static CRGB evaluationColorWord(char* cmd) {
@@ -97,6 +149,7 @@ static CRGB evaluationColorWord(char* cmd) {
 void subscribeApplication() {
 	mqttClient.subscribe(configBlock.mqttTopicColorCommand);
 	mqttClient.subscribe(configBlock.mqttTopicCommand);
+	mqttClient.subscribe(configBlock.mqttTopicFlowCommand);
 }
 
 
@@ -133,7 +186,17 @@ static void setColor(int8_t ledNumber, uint8_t red, uint8_t green, uint8_t blue)
 
 
 void callbackApplication(char *topic, uint8_t tokenCnt, char **tokens) {
-	if (! strcmp(topic, configBlock.mqttTopicCommand)) {
+	if (! strcmp(topic, configBlock.mqttTopicFlowCommand)) {
+		switch (tokenCnt) {
+		case 1:
+			if (! strcmp(tokens[0], "up")) {
+				colorFlowCmd = E_FC_FADE_ON;
+			} else if (! strcmp(tokens[0], "down")) {
+				colorFlowCmd = E_FC_FADE_OFF;
+			}
+			break;
+		}
+	} else if (! strcmp(topic, configBlock.mqttTopicCommand)) {
 		int32_t n, b;
 		CRGB pseudoColors;
 		switch (tokenCnt) {
@@ -149,6 +212,7 @@ void callbackApplication(char *topic, uint8_t tokenCnt, char **tokens) {
 			setColor(n, b, b, b);
 			break;
 		}
+		colorFlowCmd = E_FC_ABORT;
 	} else if (! strcmp(topic, configBlock.mqttTopicColorCommand)) {
 		int32_t n, red, green, blue;
 		CRGB colors;
@@ -180,6 +244,7 @@ void callbackApplication(char *topic, uint8_t tokenCnt, char **tokens) {
 			setColor(n, red, green, blue);
 			break;
 		}
+		colorFlowCmd = E_FC_ABORT;
 	}
 }
 
@@ -204,7 +269,7 @@ void setupApplication() {
 void loopApplication() {
 	mqttLoop();
 
-
+	colorFlowEngine();
 
 	if (show) {
 		show = false;
diff --git a/configuration.cpp b/configuration.cpp
index 1c70afe..b53b6be 100644
--- a/configuration.cpp
+++ b/configuration.cpp
@@ -36,6 +36,7 @@ void configServeIndex() {
     strcpy(configBlock.mqttPass, "geheim123");
     strcpy(configBlock.mqttClientId, "RgbLed1");
     configBlock.mqttPort = 8883;
+    strcpy(configBlock.mqttTopicFlowCommand, "IoT/RgbLed1/FlowCommand");
     strcpy(configBlock.mqttTopicColorCommand, "IoT/RgbLed1/ColorCommand");
     strcpy(configBlock.mqttTopicCommand, "IoT/RgbLed1/Command");
     strcpy(configBlock.mqttDebugTopic, "IoT/RgbLed1/Debug");
@@ -194,6 +195,21 @@ void configServeIndex() {
   buffer += configBlock.mqttPort; 
   buffer += "\"";
   
+  buffer +=
+  "            />"
+  "          </td>"
+  "        </tr>"
+  "        <tr>"
+  "          <td>"
+  "            <label for\"mqttTopicFlowCommand\">MQTT Topic Flow Command</label>"
+  "          </td><td>"
+  "            <input type=\"text\" name=\"mqttTopicFlowCommand\" id=\"mqttTopicFlowCommand\" ";
+  
+  buffer += "    size=\"64\" ";
+  buffer += "    value=\"";
+  buffer += configBlock.mqttTopicFlowCommand; 
+  buffer += "\"";
+  
   buffer +=
   "            />"
   "          </td>"
@@ -300,6 +316,8 @@ void configServeGetConfiguration() {
   strcpy(configBlock.mqttClientId, arg.c_str());
   arg = webServer.arg("mqttPort");
   configBlock.mqttPort = atoi(arg.c_str());
+  arg = webServer.arg("mqttTopicFlowCommand");
+  strcpy(configBlock.mqttTopicFlowCommand, arg.c_str());
   arg = webServer.arg("mqttTopicColorCommand");
   strcpy(configBlock.mqttTopicColorCommand, arg.c_str());
   arg = webServer.arg("mqttTopicCommand");
@@ -368,6 +386,10 @@ void showConfiguration() {
   Serial.print(configBlock.mqttPort);
   Serial.println(">");
     
+  Serial.print("mqttTopicFlowCommand = <");
+  Serial.print(configBlock.mqttTopicFlowCommand);
+  Serial.println(">");
+    
   Serial.print("mqttTopicColorCommand = <");
   Serial.print(configBlock.mqttTopicColorCommand);
   Serial.println(">");
diff --git a/configuration.h b/configuration.h
index 2b21764..ea79071 100644
--- a/configuration.h
+++ b/configuration.h
@@ -9,6 +9,7 @@ typedef struct {
   char mqttPass[32];
   char mqttClientId[32];
   uint32_t mqttPort;
+  char mqttTopicFlowCommand[64];
   char mqttTopicColorCommand[64];
   char mqttTopicCommand[64];
   char mqttDebugTopic[64];