tl;dr
Zigbee lights, now even controllable from your smartphone!
Intro
We are adding colors to the trees using outdoor RGBW lights. The fun part: They are ZigBee-powered, creating their own mesh network on the fly. Using zigbee2mqtt, they can be controlled individually using only open source software from your smartphone!
Controlling
Go to http://151.216.41.170:8081/#/group/1 and click the color button of any light to set a color, or use the color temperature slider to set a white color!