So, I've started using a old mains powered night light for my 3 year old ... The thing it, it's way too bright and needs to be plugged in, which limits its location.
I intend remove the mains lead and bulb, and install a white LED and AA battery instead.
However, I only need it on for maybe 1-2 hours (if that) and it would be nice if it turned its self off. I was considering using a simple RC circuit to turn a transistor off, to turn off the LED, but I wonder if this is the best option for such a long time delay and when its "off" I really want it to be "off - off" ... I was wondering if anyone had any other simple bright ideas (excuse the pun :-) that didn't involve and AVR ! ;-)