About this item

The WeAct Studio CH340K USB to Serial/TTL UART Module is a compact and reliable interface converter designed to bridge USB connectivity with serial UART communication. Based on the popular CH340K chip, this module allows easy communication between computers and microcontrollers, development boards, or other serial devices. Supporting 3.3V TTL logic levels, the CH340K module is ideal for modern low-voltage microcontrollers like STM32, ESP32, and Raspberry Pi Pico. It enables smooth data transfer for debugging, firmware uploading, or serial communication without the need for additional adapters. One standout feature of the WeAct CH340K module is its auto-download capability, which simplifies flashing firmware on compatible microcontrollers by automating reset and bootloader entry signals, improving development efficiency. The module connects via USB 2.0 and is compatible with Windows, macOS, and Linux, thanks to widely supported drivers. Its small form factor and straightforward pinout with TX, RX, GND, and VCC make it easy to integrate into various projects, whether on a breadboard or custom PCB. This USB-to-UART converter is an essential tool for embedded developers, hobbyists, and engineers working with serial protocols.