Hey! i’m having issues here aswell,
I see a diode flashing on my arduino board whenever i try to write to the serial from Unreal Engine, but i cannot get any data out of it.
And when i Serial.print(“something”) from the arduino, nothing appears when i use the Read Serial node in blueprint and try to print the string.
I see that the port opens correctly from the output log in UE. Tried with 4.10, 4.11 and 4.12, using win10.