Andrew, there is a direct website i found for Toat-tech.
http://www.toast-tech.com/
Also this guy has an interesting project going on Project Orion, aims to build something for around 300$.
http://forum.timescapes.org/phpBB3/v...1b2a32a50feefe
Also has a Project Chronos (link in his signature) for time lapse machine.
Regards
Fahim