I made this custom board that contains a complete arduino nano on it. I soldered every component with extreme care and already check all the connections and they all go according to the designed schematics. But i seem to have a problem with the serial communication between the computer and the board. Im almost certain the problem has to do with my CH340C IC, but i have already replaced it 3 times.
I know the arduino is working because i burned the bootloader and uploaded some example sketches to it trough the ICSP pins.
So maybe i have a design flaw? If I do please let me know.