Right, gotcha.
Exactly, I'd much rather burn out a spare 7805 than an Arduino or servo!
I found a 7812. I like the idea of stepping down 20V to 12V, and then taking the 12V down to 5V in two steps. Are there any foreseeable problems with doing that?
Edit
I stand corrected. My circuit uses two 10uF capacitors on the 7805.
/Edit
Thanks,
-BBX