| CH340G Pin | Connect To | |------------|-------------| | VCC (5V) | 5V power | | GND | Common ground | | TXD | Microcontroller’s (cross-connect) | | RXD | Microcontroller’s TX (cross-connect) | | DTR | Reset pin (for auto-reset programming) | | XTAL1 & XTAL2 | 12MHz crystal + 22pF caps | | V3 | Decoupling cap to GND (0.1µF) |
: Keep a few CH340G modules in your parts drawer. And keep the driver installer on a USB stick. You’ll thank yourself later. driver ch340g
On Linux, the CH340 works out of the box with the built-in ch341 driver. On Mac, you need to install a driver (but it works fine). On ? | CH340G Pin | Connect To | |------------|-------------|