This is a waterproof case for 12 leds RGB ring (https://www.amazon.fr/gp/product/B07B46JZDB/ref=ppx_yo_dt_b_asin_image_o01_s00?ie=UTF8&psc=1)

To get waterproof feature, all the electronics in under transparent epoxy resin (https://www.amazon.fr/gp/product/B07F6S3ZXT/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1). I asked resin manufacturer, they do confirm that this resin has no electrical conductivity and can be used for this project.

There are also 2 holes for fixing the device against a wall (outside of course, as it is not afraid by rain)

Creality

Ender 3

No

No

20