Magic LED (with WS2812B)

[buuuudzik]

After you created the right sketch for the Arduine you can add a RF board to receive RF signals, for example:
http://www.digitalsmarties.net/products/rfm12b-board

And on the LogicMachine you can control the Arduino with the following usb stick with RF comm.:
http://www.digitalsmarties.net/products/jeelink-classic

So you can control your Arduino board over RF with your LogicMachine.

This is a good advice but I hope that I will have enough cables on the building