Hi, I wonder if anyone knows if it is possible to have alarm on the DS3231 RTC module that works by setting the SQW pin high and low for extended periods of time? I have used the DS3232RTC library to set interrupt alarms as talked about here Link and that worked just fine. But that, I think, uses …

DS3231 RTC module SQW pin: High/low for extended time?

anon57585045 November 22, 2020, 5:53pm 2

Have you read the DS3231 data sheet?

Topic		Replies	Views
Is this the best approach to circuit powersaving using DS3231 and arduino? Programming	47	3110	September 21, 2023
DS3231: trigger INT/SQW for a certain duration Programming	42	3017	May 16, 2022
Switching power with a DS3231 RTC module General Electronics	10	6630	June 16, 2021
DS3231 alarm interupt not triggering on backup battery Programming	23	1486	August 27, 2023
DS3231 - No Alarm when powered Off. Why? Programming	85	33296	May 5, 2021