I want to use ESP32-POE with 2 of PCF8575 16 pins extender board
What I wounder are how PCF8575 boards know what adress they get?
I will use this board to control 2x16 relay boards.
Now I use a arduino Mega 2560 with homeseer over ethernet. but i want to change over to HA totally instead of having running to system.
I would be very happy if someone could help me little with thw code also.
If you have more question about how the my system work jsut ask then.