-master holds the code for an executable on Linux X11 System
-slave holds the lua script for the NodeMCU. The WS2812-strip is connected to Pin "D4"
- for running this script, you need Mqtt, WS2812, Uart & Wifi library installed
WatchOut: the LEDs have a high current (>1A), so do not connect the power to the power out of the NodeMCU
the used icon is published under the Creative Common and provided by thenounproject