Hello,
I would like to present you my latest project - 2 gang dimmer to be placed in wall (EU) with livolo panel on top of it. Works with standard light bulbs and dimmable leds
sorry fot the panel condition - it wen throuhg a lot :)
in short:
220v to 3v3 power supply
esp8266-12e
printable case
zero-cross detection
ttp223 touch sensors
1.2A per dimm channel
ws2812b RGB led

and some pictures:

@davidzh
Powersupply is rather simple chinese one:
https://aliexpress.com/item/1pcs-small-size-ac-dc-power-supply-module-220v-to-3-3v-1w-isolated-LED-
ac/32653670258.html?spm=a2g17.10010108.1000016.1.73e0545dSSfyHB&isOrigTitle=true