2 layers

Caduceus
Embedded-Systems-Discord/1-Caduceus
A maker-friendly board with single pair ethernet both for power and for data, that will work with Arduino
89 parts10GPL-3.0
KiCad boards from 1 GitHub repository tagged “samd51”, the most starred first; open any of them in PCBKit.

Embedded-Systems-Discord/1-Caduceus
A maker-friendly board with single pair ethernet both for power and for data, that will work with Arduino