Here's my problem. I need to wake up (and sleep) a battery-powered AVR by closing a switch or some other means, but I can't have any physical contact with the board or anything connected to the board (it will be in a little plastic container). The container will be about a foot out of human reach, so it may require something on the end of a stick to activate the AVR. I can't shake or otherwise move the container. I was thinking maybe waving a magnet by the container and having a reed switch or equiv. on the board. How would you do it?
Oh yeah, cheap is important!