USB to UART TTL Serial Adapter – USB to Serial Converter Module for Microcontroller Communication

The USB to UART TTL Serial Adapter is a compact and essential module that provides seamless communication between your computer and serial-based microcontrollers like Arduino, ESP8266, ESP32, STM32, and more. Based on popular chips like CH340, CP2102, or FT232RL, this adapter converts USB signals to TTL-level UART (TX/RX) signals, allowing easy firmware uploading, debugging, and serial communication.

It features standard 6-pin or 4-pin headers with TXD, RXD, VCC, GND, and often DTR or RTS for automatic reset when programming devices. Plug-and-play via USB, it supports multiple baud rates and is compatible with Windows, Linux, and macOS.

Key Features

Converts USB to TTL UART (TX/RX) signals
Compatible with 3.3V and 5V systems (via jumper or switch)
Ideal for uploading code and serial monitoring
Plug-and-play USB interface (no external power needed)
Based on CH340, CP2102, or FT232RL chipsets (varies by model)
Works with Arduino, ESP8266, ESP32, STM32, and other MCUs

Product Specifications

Feature	Specification
Interface	USB 2.0 (Type-A or Micro USB)
Output Signal Level	TTL (3.3V or 5V selectable)
Baud Rate	300bps to 1Mbps (typical)
Chipset	CH340 / CP2102 / FT232RL (depends on variant)
Operating Voltage	3.3V / 5V (selectable via jumper or onboard regulator)
Supported OS	Windows, Linux, macOS
Pins Available	TXD, RXD, VCC, GND, DTR/RTS (varies)
Use Case	Firmware flashing, serial debugging, communication bridge