:~ :~
As I wrote in another thread with the same question, I decided not to take chances. I will bend the pin going into +5V, so grounds will be connected, shield will be powered externally, and Uno will get +5V from USB. 8) 
:~ :~
As I wrote in another thread with the same question, I decided not to take chances. I will bend the pin going into +5V, so grounds will be connected, shield will be powered externally, and Uno will get +5V from USB. 8)