Hi there,
thanks for writing us. We didn't experiment the definition of a smart light using the Nanode, but it would be great for us to add a new tutorial showing how to use it in combination with Lelylan. I gave a look at the NanodeMQTT library and it should work pretty well. As starting point I suggest you to check out the
MQTT section in the dev center and the
Arduino Ethernet tutorial.
For us would be great to add Nanode to the list of the supported hardware.
Let us know if any progress come out.
See ya!