+1 for Nick Gammon's link. I am using a single liPo cell on a breadboarded atmega328 and when I put it to sleep using Nick's fantastic instructions, I can go days without the battery voltage dropping by even a tenth of a volt.
+1 for Nick Gammon's link. I am using a single liPo cell on a breadboarded atmega328 and when I put it to sleep using Nick's fantastic instructions, I can go days without the battery voltage dropping by even a tenth of a volt.