For $15 get one and see how it works. I suspect a Bluetooth type connection with a very basic 3 channel LED driver. I haven't seen a e1.31 to bluetooth controller but it might be interesting to invent. ESP32 devices have bluetooth on them so you could work from the espixelstick base.
The description is interesting. "submersible" "but can not be put in the water directly".![]()
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