How to properly use a relay module with JD-VCC from Arduino/Raspberry?
https://www.laskakit.cz/2-kanaly-rele-modul—5vdc-250vac-10a/
https://botland.cz/desky-mikrokontroleru-rp2040/22857-w6100-evb-pico-deska-s-mikrokontrolerem-rp2040-a-ethernetem-wiznet.html
https://docs.wiznet.io/Product/iEthernet/W6100/w6100-evb-pico