For last few weeks, I'm working on many other things which are also part of this project. I would like to introduce my work and some visions.

Currently, I'm developing endpoint device based on esp8266 chip. Every one knows what this chip is, so I thing that it doesn't need to be introduced. I have already done some prototype device with BMP180 barometer sensor. I have implemented code with MQTT client and sensor driver. It will be released on my GitHub very soon. I'm working on PCB design for it and 3D printed case.

Speaking on device source code, I added support for retain bit for messages and support for last will message. I needed to add this functionality for monitoring device presence on the network.

Also, I'm working on web application for health monitoring for entire network. It is divided into two parts: Python daemon for continuous monitoring of MQTT traffic and web app for user interface. The application should be capable of monitoring MQTT traffic and checking topic update rate, valid range of measured values, error codes and presence messages. It will help keep all devices up and running.

I'll keep you up to date :)