OpenSprinkler Forums OpenSprinkler Unified Firmware ESP32 port of 2.1.9 firmware Reply To: ESP32 port of 2.1.9 firmware



The RTC module SDA and SCL pins connect to the same I2C pins as the Display, along with power and ground.
You are correct that the address is different for the RTC module. The firmware identifies which type of RTC is present.
I used a DS3231 module, and have also tried a DS1307 as well. Both worked perfectly