power down command

Hi guys

i am after a way to make my arduino turn it self off if it has not been used for a set time period

is this possible?

how do it do it ;D

Maybe if the power source has a timer on it or it had its one programmable controller . Problem is the Arduino is always on when it is receiving power. So there either needs to be a switch between it and the power source or the power source needs to be removed to turn it off.

I think there’s a sleep mode. Not “off”, but as close as you’ll get without turning off the power to the Arduino.

http://server.pololu.com/catalog/product/751

Mikal Hart provides a description of how to use it here... http://arduiniana.org/projects/the-reverse-geo-cache-puzzle/