Add documentation for eQ-3 MAX! Cube integration (#2093)

source/_components/maxcube.markdown

@@ -0,0 +1,37 @@
+---
+layout: page
+title: "eQ-3 MAX! Cube"
+description: "Instructions on how to integrate eQ-3 MAX! components with Home Assistant via eQ-3 MAX! Cube."
+date: 2017-02-04 22:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: maxcube.png
+ha_category: DIY
+ha_release: 0.38
+ha_iot_class: "Local Polling"
+---
+
+[eQ-3 MAX!](http://www.eq-3.com/products/max.html) integration for Home Assistant allows you to connect eQ-3 MAX! components via the eQ-3 MAX! Cube. The components connects to the eQ-3 MAX! Cube via TCP and automatically makes all supported components available in Home Assistant. The name for each device is created by concatenating the MAX! room and device names.
+
+Limitations:
+- Configuring weekly schedules is not possible
+- Implementation is based on the reverse engineered [MAX! protocol](https://github.com/Bouni/max-cube-protocol)
+
+Supported Devices:
+- MAX! Radiator Thermostat (tested)
+- MAX! Radiator Thermostat+
+- MAX! Window Sensor (tested)
+- MAX! Wall Thermostat (tested)
+
+A `maxcube` section must be present in the `configuration.yaml` file and contain the following options as required:
+
+```yaml
+# Example configuration.yaml entry
+maxcube:
+   host: 192.168.0.20
+```
+
+- **host** (*Required*): The IP address of the eQ-3 MAX! Cube to use.
+- **port** (*Optional*): The UDP port number. Defaults to `62910`.