For my project I'm using an Arduino Mega 2560. I'll use it with a battery (and a charger module with solar panels). So, in order to reduce power usage I'm trying to use some low power techniques.
For example, I'm sending the Arduino to sleep and I'm using a RTC DS3231 module to wake-up it on regular intervals.
This works fine but I noticed that the DS3231 power led it's ever on.
Is it possible to receive the interrupt to wake-up my Arduino (SWQ) also removing the power to the DS3231 module? I mean, is this module able to send interrupts just using the on board battery?
I also tried to connect the DS3231 VCC pin to a digital Arduino pin (5 for example) in order to disable the power to it when I send the Arduino to sleep. But in this case I'm not able to receive the interrupt to wake-up Arduino
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