Hi Ray,
I have a question:
I have a 16 port I2C expander PCF8575 board. Can I use it instead the factory baseboard.
What I mean is to connect it to the 2×6 pin connector ( JP1 ), pins 3 ( SDA ) and 4 ( SCL ).
The factory baseboard has PCF8574TS, with addresses A0=0, A1=1 and A2=0. I can assign the same address to PCF8575 expander board.
Shall Open Sprinkler recognize the expander and how – like ports 1 to 16 or like ports 9 to 24?
My Open Sprinkler is DC V3.0, FW 2.1.9
Best regards
Nick