I just stumbled upon this thread and was wondering if you could possibly provide information on where you purchased the transistor and thermistor? Also, do you by any chance have a wiring diagram for your project? I would really like to look at it to see how you have all of this wired.
I am looking to create a christmas light show next year (starting my project now), and have been wondering how to dim the christmas lights. After hours of browsing forums and the various Arduino communities, it seems that you have found the best solution yet. Im hoping to purchase a few of the transistors to test this all out with some christmas lights.
Thanks for any and all assistance/info you can provide!