Debug UART voltage


#1

Hi all,

My apologies if the question is stupid, but I’m kind of newbie in UART and all those hardware stuff.

Is debug UART of BPI-R2 tolerate to 5 Volt? I’d like to use my Arduino Uno as USB-to-UART connector but afraid to kill my brand new Banana with of over-voltage.


(Frank W.) #2

to be sure use a level-shifter or voltage divider to get 3v3 on r2’s rx-pin