I am working with a bread boarded 328P running the 8mhz internal clock boot loader and I have a 32.768khz external crystal. I am trying to put it to sleep and then wake up at predetermined times based on timer2. I have variable "seconds" and use timer2 to increment this variable. So if seconds is gr…

Sleep and wake intervals

JChristensen January 4, 2012, 1:26am 7

Seems like a perfectly valid approach, and works without the additional RTC chip.

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