My star moss needs a consistent supply of water to prosper. Too much water, it gets all brown. Too less water, the petals shrink and lost the shape of a star. So I will make a mist maker with LED light to give the plant a light but consistent amount of water.

BOM:

the mist maker module ¥10

WS2812 5050 RGB LED ¥ 14.5

Arduino Nano 33 IoT ¥220

Breadboard ¥6

Jumper wires ¥ 3.44