How to build a system to handle MQTT broker and Django

python django mqtt paho django-channels
albin antony picture albin antony · Sep 15, 2017 · Viewed 7.5k times · Source

I am planning to build a home automation system where IoT devices communicate with the MQTT broker.The system also involves a Django web server that serves API for ios/android devices. I will describe an example of what I want to implement.

An API call is made from mobile app to Django server to turn ON a device. When such API request is made to Django, it should push 'Turn ON' data to IoT device via MQTT protocol.

Also, IoT devices send some real time data to the MQTT broker. Upon receiving such data I want to send push notifications to a mobile app via apns/fcm.

How can I implement this?. Will Django channels serve the purpose or should I code my Django server to act as an MQTT client and communicate with the MQTT broker?. Or is there any other methods to implement this.

Answer

Kalariya_M picture Kalariya_M · Sep 15, 2017

well, i did a little project on paho-MQTT it's a nice experience with google chrome extension MQTTLens.(you should try this if u aren't using this already)

in your case, I think you can use rest-framework of Django for building an API and on the front-end, you can use crispy-form to make ON-OFF signals and this will directly communicate to the views of Django in which you can write the client and subscriber details.

lets focus on An API call is made from mobile app to Django server to turn ON a device. When such API request is made to Django, it should push 'Turn ON' data to IoT device via MQTT protocol.

  • you can make views which response to the API call from any devices for that you can check django-rest-framework this is the best option that we have.

and now IoT devices send some real time data to the MQTT broker

  • for this, you can check Google's this artical. MQTT broker can be handed with the Django views easily and this process not very complex if you use the modular structure with Django's DRY concpet.

on the other hand, you can also make different views for just client or for broker it's up to you but i think this approach will take a long time to devlope such application I don't know about mobile development so i can't help you with that :(.

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