OpenSprinkler › Forums › Hardware Questions › Hardware change DS1307 instead DS3231 › Reply To: Hardware change DS1307 instead DS3231 June 2, 2015 at 3:15 pm #38124 ianfParticipant I have built a couple of open sprinklers for family and friends on prototyping board. They all use the DS3231 RTC and work fine. The DS3231 is not pin compatible with the DS1307.
