I am working with a fairly barebones version of the Atmega2560 (minimum circuit, @3.3V and 8 Mhz) connected up to some basic peripherals (such as shift register, SD card, Xbee, etc.), all powered by Li-ion battery. Now, out of curiosity, I looked through the power-consumption numbers on the Atmega2…

Atmega2560 Power consumption

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