Hi ! I designed my own board with and Atmega328p and a CH340G and they don't seem to be talking to each other. I can connect to the CH340G over USB but
ATmega328P CH340 USB Microcontroller Board Arduino Compatible – Envistia Mall
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MINI Type-C Nano 3.0 USB V3.0 ATmega328P CH340G 5V 16M Module Micro-Controller Board for Arduino 328P CH340C CH340 Atmega328 - AliExpress
Amazon.com: 10Pcs/Lot Mini USB Nano V3.0 3.0 Atmega328P atmega328 Controller for Arduino CH340 CH340G 5V 16M Board Module with Pins : Electronics
Amazon.com: WWZMDiB UNO R3 ATmega328P microcontroller CH340G Improved Version Development Board Compatible with Arduino IDE with USB Cable and 2.54mm Straight Pin Header : Electronics
high quality Nano 3.0 controller nano CH340 USB driver ATMEGA328 ATMEGA328P nano Mini USB With the bootloader for arduino - AliExpress
PCB Design with ATmega328 and USB type B - Microcontrollers - Arduino Forum
