I want to wake up my Arduino at 8am, 10pm and 10:05pm with a DS3231 with interrupt pin. How can I set the new alarm via rt and tx after the first alarm?
The Arduino should pour water in two pots in the morning and evening. In the evening two times in a row because the plants are thirsty.
Possibly at lunchtime.
You have to program the arduino to wake up at a given time. When it does, you reprogram it to wake up at the next time. Repeat as needed. There are lots of examples if you google. There are also lots of DS3231 libraries out there. Some support alarms, some do not.
how do i do that? how can the interrupt alarm be reset automatically? if you have a link to a working and understandable library then please post it to us