i'm trying to connect RTC DS3231 on my raspberry pi3.
My problem is that the pins on GPIO are almost finished, and i cannot connect on pins (i2c) 03 e 05 because i use it for other functions.
I read on internet that pins 27 (i2c ID EEPROM SD) and 28 (i2c ID EEPROM SC) have I2C protocol.
Is it possible connect RTC on this pins? or are they used for other internal functions?
if yes, will i have a problems with library?