| 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) |
If you’ve ever used an Arduino clone, an ESP8266 board, or a cheap logic analyzer, you’ve almost certainly encountered the CH340G . This little 16-pin chip is one of the most common—and most controversial—components in the maker world. driver ch340g
Yes, drivers can be annoying. Yes, it’s not an FTDI. But for 95% of hobbyist projects—blinking LEDs, reading sensors, flashing ESPs—the CH340G works just fine. | CH340G Pin | Connect To | |------------|-------------|
Love it or hate it, the CH340G is everywhere. Today, let’s break down what it is, why you keep seeing it, and how to use it successfully. The CH340G is a USB-to-serial UART converter manufactured by a Chinese company called WCH (Nanjing Qinheng Microelectronics). Its job is simple: convert data between a computer’s USB port (modern) and a microcontroller’s serial UART pins (legacy, but still universal). Yes, it’s not an FTDI
| 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) |
If you’ve ever used an Arduino clone, an ESP8266 board, or a cheap logic analyzer, you’ve almost certainly encountered the CH340G . This little 16-pin chip is one of the most common—and most controversial—components in the maker world.
Yes, drivers can be annoying. Yes, it’s not an FTDI. But for 95% of hobbyist projects—blinking LEDs, reading sensors, flashing ESPs—the CH340G works just fine.
Love it or hate it, the CH340G is everywhere. Today, let’s break down what it is, why you keep seeing it, and how to use it successfully. The CH340G is a USB-to-serial UART converter manufactured by a Chinese company called WCH (Nanjing Qinheng Microelectronics). Its job is simple: convert data between a computer’s USB port (modern) and a microcontroller’s serial UART pins (legacy, but still universal).
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