CH340 Type-C Port to TTL-OTG Serial Port Module

Key Features

✅ USB Type-C to TTL Serial Conversion – Connects modern Android phones (with OTG support) to serial devices (3.3V or 5V TTL). ✅ CH340G Chipset – Stable and widely compatible with Windows, Linux, Android, and macOS (drivers required). ✅ Supports Multiple Baud Rates – From 300 bps up to 2Mbps for flexible communication. ✅ Built-in Voltage Protection – Prevents damage to connected devices with reverse polarity and overvoltage protection. ✅ Plug-and-Play – No external power needed (draws power from USB OTG). ✅ 4-Pin TTL Interface – Includes TX, RX, GND, and VCC (3.3V/5V selectable) pins for easy wiring. ✅ LED Indicators – TX/RX activity LEDs for real-time monitoring. ✅ Compact & Portable – Lightweight design for fieldwork and on-the-go debugging.

Compatibility

✔ Android Phones – Works with USB OTG-supported devices (Android 4.0+). ✔ Microcontrollers – Arduino, ESP8266, ESP32, Raspberry Pi, STM8/STM32, and more. ✔ Industrial Devices – PLCs, CNC machines, GPS modules, and legacy serial equipment. ✔ OS Support – Windows (CH340 driver needed), Linux (built-in), macOS (driver required).

Applications

Firmware Flashing & Debugging – Upload code to MCUs without a PC.
IoT & Embedded Projects – Serial monitoring via Android apps (e.g., Serial USB Terminal).
DIY Electronics – Troubleshoot circuits, log sensor data, and control devices.
Industrial Automation – Interface with RS232/RS485 devices (with additional converter).

Package Includes

1× USB Type-C to TTL Serial Adapter (CH340 Module)

How to Use?

Enable USB OTG on your Android phone.
Connect the adapter to your phone and the target device (TX→RX, RX→TX, GND→GND).
Use a serial terminal app (e.g., Serial USB Terminal, ArduinoDroid) to communicate.
For PC use, install CH340 drivers (provided via download link).

Note

Ensure your Android device supports USB Host Mode (OTG).
3.3V/5V logic selection may vary by module version—check jumper settings if available.