text: // WiFi settings
  #define WIFI_SSID "wifi ssid"
  #define WIFI_PASSWORD "wifi pw"
  
  // MQTT settings
  #define MQTT_TOPIC "mqtt_topic"
  #define MQTT_SERVER "mqtt.example.org"
  #define MQTT_PORT 1883
  #define MQTT_USER "mqtt_user_with_read-write_permission_to_topic"
  #define MQTT_PASSWORD "mqtt_password"
  