diff --git a/ModuleTimer/ModuleTimer.ino b/ModuleTimer/ModuleTimer.ino
index 3bfdb99..cef003b 100644
--- a/ModuleTimer/ModuleTimer.ino
+++ b/ModuleTimer/ModuleTimer.ino
@@ -1,3 +1,16 @@
+#define UseMQTT
+#ifdef UseMQTT
+#include <WiFi.h>
+#include <WebSocketsClient.h> // include before MQTTPubSubClient.h
+#include <MQTTPubSubClient.h>
+
+const char *ssid = "AIRPORT-FREE-WIFI-NEW";
+const char *pass = "alexalex";
+
+WebSocketsClient client;
+MQTTPubSubClient mqtt;
+#endif
+
 #include <M5Core2.h>
 
 #define penaltyAmount 30 * 1000
@@ -7,6 +20,44 @@ unsigned long startTime;
 const unsigned long countdownDuration = 5 * 60 * 1000; // 5 minutes in milliseconds
 unsigned long penalties = 0;
 
+void connect()
+{
+#ifdef UseMQTT
+connect_to_wifi:
+    Serial.print("connecting to wifi...");
+    while (WiFi.status() != WL_CONNECTED)
+    {
+        Serial.print(".");
+        delay(1000);
+    }
+    Serial.println(" connected!");
+
+connect_to_host:
+    Serial.println("connecting to host...");
+    client.disconnect();
+    client.begin("gitea.deprived.dev", 6667, "/", "mqtt"); // "mqtt" is required
+    client.setReconnectInterval(2000);
+
+    Serial.print("connecting to mqtt broker...");
+    while (!mqtt.connect(String(millis()), "alex", "1111"))
+    {
+        Serial.print(".");
+        delay(1000);
+        if (WiFi.status() != WL_CONNECTED)
+        {
+            Serial.println("WiFi disconnected");
+            goto connect_to_wifi;
+        }
+        if (!client.isConnected())
+        {
+            Serial.println("WebSocketsClient disconnected");
+            goto connect_to_host;
+        }
+    }
+    Serial.println(" connected!");
+}
+#endif
+
 void reset()
 {
     startTime = millis();
@@ -15,17 +66,43 @@ void reset()
 
 void setup()
 {
+    WiFi.begin(ssid, pass);
+
+    // initialize mqtt client
+    mqtt.begin(client);
+
+    // connect to wifi, host and mqtt broker
+    connect();
+
     M5.begin();
     M5.Lcd.begin();
     M5.Lcd.fillScreen(TFT_BLACK); // Set initial background color
-    startTime = millis();         // Record the start time
+    M5.Lcd.setCursor(0, 0);
+    M5.Lcd.setTextColor(WHITE);
+    M5.Lcd.setTextSize(7);
+    M5.Lcd.println("Loading...");
+    Serial.begin(115200);
 
-    Serial.begin(9600);
+    startTime = millis(); // Record the start time
+
+    // subscribe callback which is called when every packet has come
+    mqtt.subscribe([](const String &topic, const String &payload, const size_t size)
+                   { Serial.println("mqtt received: " + topic + " - " + payload); });
+
+    // subscribe topic and callback which is called when /hello has come
+    mqtt.subscribe("/hello", [](const String &payload, const size_t size)
+                   {
+        Serial.print("/hello ");
+        Serial.println(payload); });
 }
 
 bool pressed = false;
 void loop()
 {
+#ifdef UseMQTT
+    mqtt.update();
+#endif
+
     unsigned long elapsedTime = millis() - startTime + penalties;
     unsigned long remainingTime = countdownDuration - elapsedTime;
 
diff --git a/mqttExample/mqttExample.ino b/mqttExample/mqttExample.ino
new file mode 100644
index 0000000..e69de29