I recently wrote up a Build Log on the wiki for the SolarTerm SmartLED that I’ve been working on.  This is very much still work in progress as I’ve not built the solar engine for it yet.  The project was picked up by Make’s Blog and others.  Along with building the solar engine, I’ve also got a problem with the watchdog timer which is not behaving as expected.  I think i need to go and call on the nice folks over at AVR Freaks for some help.  I’ll post an update on this when I make some progress.