Hi fernando , first of all thank you for this great project. I 'm connecting the pcf8575 and the post you say how to make changes in the code the link does not work.
viewtopic.php?f=24&t=71&p=346&hilit=pcf8575&sid=8c555a0d1e3d4dbe400ebf8a6d5ef8af#p346
Can you tell me what you have to comment or uncomment ??
Thank you