diff --git a/ESP32_ESP-IDF/main/mqtt/mqtt_client.cpp b/ESP32_ESP-IDF/main/mqtt/mqtt_client.cpp
new file mode 100644
index 0000000..2b4abee
--- /dev/null
+++ b/ESP32_ESP-IDF/main/mqtt/mqtt_client.cpp
@@ -0,0 +1,38 @@
+#include "mqtt_client.hpp"
+
+#include "mqtt_client.h"
+
+static esp_mqtt_client_handle_t mqttClient;
+
+void MQTTClient::Init()
+{
+    esp_mqtt_client_config_t cfg = {
+        .broker =
+        {
+            .address =
+            {
+                .uri = "mqtt://test.mosquitto.org"
+            }
+        }
+    };
+
+    mqttClient = esp_mqtt_client_init(&cfg);
+
+    esp_mqtt_client_start(mqttClient);
+}
+
+void MQTTClient::PublishCO2(uint16_t ppm)
+{
+    char msg[32];
+
+    sprintf(msg,"%u",ppm);
+
+    esp_mqtt_client_publish(
+        mqttClient,
+        "student/co2",
+        msg,
+        0,
+        1,
+        0
+    );
+}
\ No newline at end of file
diff --git a/ESP32_ESP-IDF/main/mqtt/mqtt_client.hpp b/ESP32_ESP-IDF/main/mqtt/mqtt_client.hpp
new file mode 100644
index 0000000..abe5959
--- /dev/null
+++ b/ESP32_ESP-IDF/main/mqtt/mqtt_client.hpp
@@ -0,0 +1,8 @@
+#pragma once
+
+class MQTTClient
+{
+public:
+    static void Init();
+    static void PublishCO2(uint16_t ppm);
+};
\ No newline at end of file