mqtt-cogs

Wordpress MQTT plugin

Synopsis

MqttCogs maintains a persistent (well semi persistent) connection to an Mqtt Broker. When a message arrives on a subscribed topic, it persists it to a custom database table in wordpress.

So that you can ‘see’ the data in your blog it provides a number shortcodes for visualizing your data. Visualization uses Google Visualization

Code Example

[ mqttcogs_drawgoogle charttype=”LineChart” ]

[ mqttcogs_data limit=”40″ topics=”mysensors_out/100/1/1/0/0″ ]

[ /mqttcogs_drawgoogle ]

Motivation

I’ve been mucking around with IoT (internet of things) projects for over a year now. I started with Arduino & the MySensors project. Annoyingly, it really isn’t as easy as you think!

I didn’t want to rent a server and then have to install IOT Controller software. What I do have though is a wordpress blog. This costs me $1.50 per month to rent. So I started wondering about getting MQTT data into the WordPress database and visualizing the data on my blog.