Smart Home Automation Forum

Hi,

Looking at the schematics I’m not 100% sure if the PCF8574 INT line is connected to the ESP32 or not.
I would be very grateful if somebody could confirm if this is the case. 
I can see there’s a pull-up resistor, which I’m surprise because I though the PCF has an internal resistor anyway.
If it is connected to the ESP32 I would greatly apreciate any information on this subject.

Thanks in advance!

Eric

our ESP32 board, A6's PCF8574 not used "INT" pin with ESP32 chip.

Thank you for the clarification!

Best regards:

Eric