@ Rusty-can I have USB connected (for debugging) at the same time I have 12V power to the Vin pin without conflict? I am worried that the incoming USB 5 volts will conflict with the 5 volts produced by the Vin regulator. I want to be able to run debugging with everything hooked up in the WTE.
p.s. I asked on the Adafruit site but no answer yet and I want to get on with getting ready for Sunday.