OpenHAB v3 Configuration for your WQHD INSTAR MQTTv5 Broker

• Part I - MQTT Binding Configuration through the Main UI
• Part II - MQTT Binding Configuration through the Configuration Files
• Part III - MQTT Binding Rules
• Part IV - MQTT Binding Scripts
• Part V - Groups and Sitemaps

Q: I want to use my IN-9408 2k+ with the new Version 3 of OpenHAB. The camera MQTT Broker supports the new MQTTv5. How can use this interface to control my camera?

A: Start by installing the MQTT-Binding:

Now create a new Thing from the installed binding:

Now add your cameras Broker configuration that you can find/configure in your Cameras Web User Interface - Note that your camera has to be configured to use it's own MQTT Broker:

Back in the Things configuration we can now configure the MQTT Broker by adding our camera's broker:

Fill out the broker IP address (IP address of your camera), the broker port and login. Then click on Create Thing. And the MQTT Binding is now sucessfully connected:

Click on the Thing you created and switch to the Channels tab and click on Add Channel to configure data points (topic subscriptions) that you want to create:

I am going to use the MQTT Alarmserver of my camera. This is a topic that is being updated every time an alarm is triggered. The payload carries the a numeric value representing the trigger that cause the alarm. If your camera is configured to use the MQTT Prefix cameras and the MQTT ID 118:

Then the alarmserver topic can be found under cameras/118/status/alarm/triggered (in the screenshot below I am using the MQTT Explorer to visualize the MQTT API):

We can add this topic as a trigger for our MQTT Binding Channel:

To be able to display the MQTT payload of our alarmserver topic in the OpenHAB UI we now need to create an Item for it:

The now created Item needs to be linked to our Channel:

The Item should be listed when clicking on Use an existing item:

You can now trigger an alarm on your camera and you should be able to see the value switch to, e.g. {"val":"1"} if you triggered motion detection area 1 and then fall back to {"val":"0"} - the idle position:

To display this value on the OpenHab UI go to Settings/Pages select the Overview page - for now - , click on Add Cells and choose a Label Cell by clicking on the cell placeholder:

Configure the cell to use the alarmserver Item you created:

And the cell is now added to your Overview page:

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