CH340 USB to TTL Serial Adapter Module (3.3V/5V)

Effortlessly connect your microcontroller projects to your computer with our reliable CH340 USB to TTL Serial Adapter. This compact module is the perfect tool for programming Arduino Pro Mini, ESP8266/ESP32 modules, unbricking routers, or communicating with any TTL serial device directly from a USB port.

Based on the stable CH340G chip, this adapter avoids the common driver and compatibility issues found in older chips like the PL2303, ensuring a smooth plug-and-play experience.

Key Features:

• Reliable CH340G Chip: Utilizes the industry-proven CH340G IC, ensuring stable performance and broad compatibility across different computers and operating systems.
• Selectable Logic Levels: Easily switch between $3.3V$ and $5V$ power and logic levels using the onboard jumper. This makes it versatile enough to work with a wide range of microcontrollers and peripherals.
• On-board Status LEDs: Features Power (PWR), Transmit (TXD), and Receive (RXD) LEDs, allowing you to visually monitor the module's status and data activity at a glance.
• High-Quality Construction: Built with a gold-plated USB connector and durable yellow pin headers for a solid connection and long-lasting use.
• Broad OS Compatibility: Offers seamless driver support for modern operating systems including Windows (7/8/10/11), macOS, and Linux.

Common Applications:

• Programming Arduino boards (Pro Mini, LilyPad)
• Communicating with ESP8266 and ESP32 Wi-Fi modules
• Serial communication with Raspberry Pi
• Configuring or unbricking routers and other networking hardware
• General-purpose serial communication for debugging electronics projects

Pinout:

• 5V: Provides $5V$ output from the USB port.
• VCC: Power output, connected to either $3.3V$ or $5V$ based on the jumper setting.
• 3V3: Provides $3.3V$ output.
• TXD: Transmit Data. Connect to the RX pin of your microcontroller.
• RXD: Receive Data. Connect to the TX pin of your microcontroller.
• GND: Common Ground.
• (RTS & CTS): Pins available for hardware flow control if needed.

What's Included:

• 1 x CH340G USB to TTL Serial Adapter Module
• 1 x 4-Pin Female-to-Female Jumper Wire Cable

Driver Download:

If your system does not automatically install the driver, you can download it from the official WCH website: http://www.wch-ic.com/downloads/file/177.html