diff --git a/backend/src/main/java/net/miarma/contaminus/verticles/LogicLayerAPIVerticle.java b/backend/src/main/java/net/miarma/contaminus/verticles/LogicLayerAPIVerticle.java
index 71ce622..7d0d228 100644
--- a/backend/src/main/java/net/miarma/contaminus/verticles/LogicLayerAPIVerticle.java
+++ b/backend/src/main/java/net/miarma/contaminus/verticles/LogicLayerAPIVerticle.java
@@ -8,9 +8,11 @@ import java.util.Set;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 
+import io.netty.handler.codec.mqtt.MqttQoS;
 import io.vertx.core.AbstractVerticle;
 import io.vertx.core.Promise;
 import io.vertx.core.Vertx;
+import io.vertx.core.buffer.Buffer;
 import io.vertx.core.http.HttpMethod;
 import io.vertx.core.json.JsonObject;
 import io.vertx.ext.web.Router;
@@ -19,6 +21,8 @@ import io.vertx.ext.web.client.WebClient;
 import io.vertx.ext.web.client.WebClientOptions;
 import io.vertx.ext.web.handler.BodyHandler;
 import io.vertx.ext.web.handler.CorsHandler;
+import io.vertx.mqtt.MqttClient;
+import io.vertx.mqtt.MqttClientOptions;
 import net.miarma.contaminus.common.ConfigManager;
 import net.miarma.contaminus.common.Constants;
 import net.miarma.contaminus.entities.COValue;
@@ -34,12 +38,14 @@ public class LogicLayerAPIVerticle extends AbstractVerticle {
     private ConfigManager configManager;
     private final Gson gson = new GsonBuilder().serializeNulls().create();
     private RestClientUtil restClient;
+    private MqttClient mqttClient;
 
     public LogicLayerAPIVerticle() {
     	this.configManager = ConfigManager.getInstance();
     	WebClientOptions options = new WebClientOptions()
     			.setUserAgent("ContaminUS");
     	this.restClient = new RestClientUtil(WebClient.create(Vertx.vertx(), options));
+    	this.mqttClient = MqttClient.create(Vertx.vertx(), new MqttClientOptions().setAutoKeepAlive(true));
     }   
     
     @Override
@@ -146,6 +152,28 @@ public class LogicLayerAPIVerticle extends AbstractVerticle {
         WeatherValue weatherValue = gson.fromJson(weather.toString(), WeatherValue.class);
         COValue coValue = gson.fromJson(co.toString(), COValue.class);
         
+        float coAmount = coValue.getValue();
+        String topic = buildTopic(Integer.parseInt(groupId), deviceId, "matrix");
+        if (coAmount >= 80.0f) {
+        	mqttClient.connect(1883, "miarma.net", ar -> {
+        		if(ar.succeeded()) {
+        			Constants.LOGGER.info("Connected to MQTT broker");
+        			mqttClient.publish(topic, Buffer.buffer("ECO"), MqttQoS.AT_LEAST_ONCE, false, false);
+        		} else {
+        			Constants.LOGGER.error("Error connecting to MQTT broker: " + ar.cause().getMessage());
+        		}
+        	});
+        } else {
+        	mqttClient.connect(1883, "miarma.net", ar -> {
+        		if(ar.succeeded()) {
+        			Constants.LOGGER.info("Connected to MQTT broker");
+        			mqttClient.publish(topic, Buffer.buffer("GAS"), MqttQoS.AT_LEAST_ONCE, false, false);
+				} else {
+					Constants.LOGGER.error("Error connecting to MQTT broker: " + ar.cause().getMessage());
+				}
+        	});
+        }
+        
         gpsValue.setDeviceId(deviceId);
         weatherValue.setDeviceId(deviceId);
         coValue.setDeviceId(deviceId);
@@ -168,4 +196,10 @@ public class LogicLayerAPIVerticle extends AbstractVerticle {
             })
             .onFailure(err -> context.fail(500, err));
     }
+    
+    private String buildTopic(int groupId, String deviceId, String topic)
+    {
+      String topicString = "group/" + groupId + "/device/" + deviceId + "/" + topic;
+      return topicString;
+    }
 }
\ No newline at end of file
diff --git a/hardware/include/main.hpp b/hardware/include/main.hpp
index 661bf3f..0fe0e85 100644
--- a/hardware/include/main.hpp
+++ b/hardware/include/main.hpp
@@ -27,12 +27,6 @@ struct SensorInfo
     String type;
 };
 
-enum AirQualityStatus
-{
-    GOOD,
-    BAD
-};
-
 void readMQ7();
 void readBME280();
 void readGPS();
diff --git a/hardware/src/lib/inet/MqttClient.cpp b/hardware/src/lib/inet/MqttClient.cpp
index 8576102..f7c9af3 100644
--- a/hardware/src/lib/inet/MqttClient.cpp
+++ b/hardware/src/lib/inet/MqttClient.cpp
@@ -1,6 +1,7 @@
 #include "MqttClient.hpp"
 
 extern WiFiClient wifiClient;
+extern const char *currentMessage;
 
 PubSubClient client(wifiClient);
 
@@ -19,9 +20,14 @@ void MQTT_OnReceived(char *topic, byte *payload, unsigned int length)
     content.concat((char)payload[i]);
   }
 
-#ifdef DEBUG
-  Serial.println(content);
-#endif
+  if(content == "ECO")
+  {
+    currentMessage = "Solo vehiculos electricos/hibridos";
+  } 
+  else
+  {
+    currentMessage = "Todo tipo de vehiculos";
+  }
 }
 
 void MQTT_Init(const char *MQTTServerAddress, uint16_t MQTTServerPort)
@@ -38,7 +44,9 @@ void MQTT_Connect(const char *MQTTClientName)
   if (client.connect(MQTTClientName, USER, MQTT_PASSWORD))
   {
     String statusTopic = buildTopic(GROUP_ID, String(DEVICE_ID, HEX), "status");
+    String matrixTopic = buildTopic(GROUP_ID, String(DEVICE_ID, HEX), "matrix");
     client.subscribe(statusTopic.c_str());
+    client.subscribe(matrixTopic.c_str());
     client.publish(statusTopic.c_str(), "connected");
   }
 #ifdef DEBUG
diff --git a/hardware/src/lib/sensor/GPS.cpp b/hardware/src/lib/sensor/GPS.cpp
index 8e49163..76f6d7c 100644
--- a/hardware/src/lib/sensor/GPS.cpp
+++ b/hardware/src/lib/sensor/GPS.cpp
@@ -28,6 +28,6 @@ GPSData_t GPS_Read()
 
 GPSData_t GPS_Read_Fake()
 {
-    float rnd = random(-0.005, 0.005);
+    float rnd = random(-0.0005, 0.0005);
     return {37.358201f + rnd, -5.986640f + rnd};
 }
\ No newline at end of file
diff --git a/hardware/src/main.cpp b/hardware/src/main.cpp
index 985bbee..2f80d0f 100644
--- a/hardware/src/main.cpp
+++ b/hardware/src/main.cpp
@@ -2,8 +2,6 @@
 
 const uint32_t DEVICE_ID = getChipID();
 const int GROUP_ID = 1;
-const char ALL_VEHICLES[] = "Todo tipo de vehiculos";
-const char ELECTRIC_VEHICLES[] = "Solo vehiculos electricos/hibridos";
 const char *currentMessage = nullptr;
 const String id = "CUS-" + String(DEVICE_ID, HEX);
 
@@ -18,7 +16,6 @@ extern MD_Parola display;
 MQ7Data_t mq7Data;
 BME280Data_t bme280Data;
 GPSData_t gpsData;
-AirQualityStatus currentAirStatus = GOOD;
 
 void setup()
 {
@@ -38,7 +35,7 @@ void setup()
     MAX7219_Init();
     Serial.println("Display inicializado");
 
-    writeMatrix(ALL_VEHICLES);
+    writeMatrix(currentMessage);
 }
 
 void loop()
@@ -79,23 +76,7 @@ void loop()
 void readMQ7()
 {
     const float CO_THRESHOLD = 100.0f;
-
     mq7Data = MQ7_Read();
-
-    AirQualityStatus newStatus = (mq7Data.co >= CO_THRESHOLD) ? BAD : GOOD;
-
-    if (newStatus != currentAirStatus)
-    {
-        currentAirStatus = newStatus;
-        if (currentAirStatus == BAD)
-        {
-            writeMatrix(ELECTRIC_VEHICLES);
-        }
-        else
-        {
-            writeMatrix(ALL_VEHICLES);
-        }
-    }
 }
 
 void readBME280()
@@ -110,10 +91,6 @@ void readGPS()
 
 void writeMatrix(const char *message)
 {
-    if (currentMessage == message)
-        return;
-    currentMessage = message;
-
 #ifdef DEBUG
     Serial.println("Escribiendo en el display...");
 #endif