Description
The CH340 USB-to-Serial module is based on the CH340G chip, offering reliable USB-to-TTL conversion for embedded systems and microcontroller projects.
It supports both 3.3V and 5V logic levels, making it compatible with a wide range of devices.
This module is ideal for uploading code to Arduino clones, flashing firmware on ESP8266 modules, debugging UART communication, and connecting PCs to serial devices.
The CH340 is plug-and-play on most operating systems with available drivers, providing a simple and inexpensive alternative to FTDI-based programmers.
Key Features
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CH340G USB-to-TTL Serial Converter
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Supports 3.3V / 5V selectable output
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Onboard TX/RX and power indicator LEDs
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Stable serial communication for programming and debugging
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Compatible with Arduino, ESP8266, ESP32, and other TTL devices
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Compact and easy-to-use module
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Cost-effective solution for serial communication
Specifications
| Feature | Details |
|---|---|
| Chipset | CH340G |
| USB Standard | USB 2.0 Full-Speed |
| Logic Levels | 3.3V / 5V selectable |
| Communication Baud Rate | Up to 2 Mbps |
| Interfaces | TX, RX, VCC, GND, DTR, RTS |
| Operating Voltage | 5V (USB input) |
| Output Voltage | 3.3V / 5V selectable |
| LEDs | Power, TX, RX |
| Dimensions | 43 × 18 mm (approx.) |
Applications
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Programming Arduino (Pro Mini, Nano clones)
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Flashing ESP8266 (ESP-01, ESP-07) and ESP32 modules
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Serial debugging and monitoring
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USB-to-UART interfacing for embedded systems
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Interfacing GSM/GPS modules with PCs
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IoT device development and testing
Compatible Boards / Circuits
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Arduino (Pro Mini, Nano, Uno clones)
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ESP8266 (ESP-01, ESP-07, ESP-12)
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ESP32 Development Boards
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GSM/GPS modules
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Any device requiring USB-to-UART TTL communication
Reviews
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