i’m working on a bachelor-thesis project with an arduino and want to power it with an akku-pack.
I use a normal Duemilanove with the ethernet shield and want to send the arduino to sleep and wake it up every minute or so to save power.
Using an adapter or Power-over-Ethernet is out of the question, sadly.
If I understood correctly, the arduino won’t save much power in sleep mode anyway since the regulator consumes power etc. And adding the ethernet shield will not make it any better.
What is the simplest way to completely cut power to arduino and wake it up via a timer? (And put it to sleep from with the arduino program).
I don’t want to get rid of the arduino and use only the avr-chip itself, since this would make the connection to the ethernet shield a new problem.