Arduino RX just connected, 3.3 volt won't hurt the Arduino and its close enough for the Arduino to receive it.
No, but the 5V on the Arduino RX pin could/will hurt the RPI
Arduino RX just connected, 3.3 volt won't hurt the Arduino and its close enough for the Arduino to receive it.
No, but the 5V on the Arduino RX pin could/will hurt the RPI