I'm trying to integrate my project on a single board, which means that I want to have my circuits and the arduino on the same board. For this, I started from the Arduino Duemilanove schematics. Now, for recreating the Arduini, I need to order the parts, and I don't know which diode to use for D1 (it has no value in the schematic). I would use a schottky diode (DO214AA, 20V, 1A), is that correct?
And, additionally: can somebody explain me in some quick words how the automatic power-source switching works on the Duemilanove?