# Set up EMQX Cloud MQTT Broker with openHAB

OpenHAB (opens new window) also known as open Home Automation Bus, is an open-source home automation software written in Java. With the strengths of integrating various devices, providing a clear user interface, and supporting the most flexible tools, openHAB becomes one of the most outstanding platforms in the field of home automation.

With the high flexibility and ease of use, openHAB provides a particular binding for users to connect MQTT Broker. In this article, we will introduce to you the process of setting up EMQX Cloud MQTT Broker with openHAB.

# What is MQTT?

MQTT, known as Message Queuing Telemetry Transport, is a lightweight IoT messaging protocol based on the publish/subscribe model and is becoming the standard for IoT communications with its simplicity, QoS support, lightweight and bandwidth-saving features.

# Why EMQX Cloud MQTT?

EMQX Cloud (opens new window) is an MQTT messaging middleware product for the IoT domain from EMQ. As the world's first fully managed MQTT 5.0 public cloud service, EMQX Cloud provides a one-stop O&M colocation and a unique isolated environment for MQTT messaging services. It serves dozens of countries and regions around the world, providing low-cost, secure, and reliable cloud services for 5G and Internet of Everything applications.

EMQX Cloud is available in three plans: Basic, Professional, and Unlimited, which offers a variety of flexible product specifications to support the deployment of fully managed MQTT services exclusively for you on the world's leading public clouds. Need more information with EMQX Cloud's product plan? Click here (opens new window).

Such a powerful product is a great choice to integrate with openHAB. You could check out the documentation (opens new window) to get more information regarding EMQX Cloud。

# Binding EMQX MQTT Broker with openHAB 3

If it's your first time using EMQX Cloud, don't worry. We will guide you through connecting Home Assistant with EMQX Cloud.

  1. Create (opens new window) an EMQX Cloud Account.

  2. Login to EMQX Cloud console (opens new window) and start a new deployment.

    For the first-time EMQX Cloud customers, we have an opportunity for you to create a free trial deployment of up to 14 days in length. The free trial deployment is an ideal way for you to learn and explore the features of EMQX Cloud. 
    
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  3. After the new deployment is created, and the status is running, add the client authentication information (you could choose to add manually or import from the file).

    add_users

  4. Install openHAB. You could easily get openHAB installed by following the steps shown here (opens new window). OpenHAB could be run on various systems based on your preference.

  5. After the openHAB is installed, run the openHAB and go to console (opens new window).

  6. Go to Settings and install MQTT Binding:

    image-binding

  7. Add MQTT to Things

    image-thing

  8. Select MQTT Broker and fill in the information of the deployment we created before.

    image-broker

    For the username and password, fill in the authentication information as mentioned before.

    image-info

  9. When there is a little green label shows ONLINE, you are successfully connecting openHAB with EMQX Cloud. Congrats!

    image-things

    You could also check the status from the EMQX Cloud's monitor page.

    image-monitor