CH340C WIFI Module Adapter Download Debug for ESP8266 ESP-01/01S

CH340C WiFi Module Adapter Download Debug for ESP8266 ESP-01/01S is an essential, highly integrated tool that simplifies the process of programming and debugging the popular ESP-01 and ESP-01S Wi-Fi modules. This convenient adapter features the stable CH340C USB-to-TTL serial converter IC, which ensures reliable communication between your computer and the ESP8266 module without the need for additional wiring or external power supplies. Furthermore, the board includes all necessary pull-up/pull-down resistors and a physical flash/reset button, streamlining the firmware download procedure. Therefore, developers and hobbyists consistently utilize this plug-and-play solution to quickly flash new firmware, upload Arduino sketches, and monitor serial output on their ESP-01/01S modules, significantly accelerating prototyping and testing cycles.

Key Features:

• Integrated CH340C Chip: Utilizes the reliable CH340C USB-to-Serial converter, providing stable, driver-compatible communication across major operating systems (Windows, Mac, Linux).
• ESP-01/01S Compatibility: The 2×4 header precisely matches the footprint of the ESP-01 and ESP-01S modules, ensuring a secure and reliable connection.
• Automatic Download Circuitry: Includes the required circuitry (pull-up/pull-down on GPIO0) and dedicated buttons to easily enter flash mode and reset the module.
• 5V/3.3V Power Output: The adapter provides a regulated 3.3V supply directly from the USB port, which efficiently powers the ESP8266 module during programming and debugging.
• Plug-and-Play Design: Simply plug the module into the adapter and connect the adapter directly to a computer’s USB port, eliminating the complexity of manual breadboard wiring.

Technical Specifications:

• USB-to-Serial Chip: CH340C (Crystal-free design)
• Interface: USB Type A Male
• Logic Voltage: 3.3 V (Regulated output for ESP module)
• Input Voltage: 5 V (from USB Port)
• Supported Modules: ESP-01 and ESP-01S
• Data Rate: Supports standard baud rates up to 2 Mbaud/s.
• Indicators: Includes power LED and RX/TX data LEDs for visual debugging.

Mechanical Specifications:

• Package Style: Integrated PCB adapter with male USB Type A connector.
• Module Socket: 2×4 Pin Header for ESP-01/01S.
• Buttons: Dedicated FLASH (GPIO0) and RESET buttons for easy firmware flashing.
• Material: FR4 PCB with clearly marked silkscreen for pin identification.

Dimensions:

• Adapter Length: ≈ 48 mm
• Adapter Width: ≈ 17 mm
• Adapter Height: ≈ 12 mm (Excluding mounted ESP module)
• Weight: ≈ 5 g (Extremely lightweight for portability)

Pinout and Wiring:

• USB Connection: Plugs directly into a host PC or laptop’s USB Type A port.
• RXD (Receive Data): Automatically connected to the ESP module’s TX pin.
• TXD (Transmit Data): Automatically connected to the ESP module’s RX pin.
• 3.3V/GND: The adapter provides regulated 3.3V and ground to the ESP module header.
• Functionality Note: The onboard buttons handle the necessary sequencing of CH\_PD/EN, RST, and GPIO0 to successfully program the ESP module without manual wiring.

Datasheet Reference:

• Download WCH CH340 Series Datasheet

Commonly Used in:

• IoT Prototyping: Essential for quickly loading custom firmware onto simple Wi-Fi devices.
• Firmware Development: Used extensively for debugging and flashing applications written in the Arduino IDE or PlatformIO.
• Hobbyist Projects: Provides a straightforward way for beginners to start using ESP-01/01S modules.

Applications:

• Module Flashing: Uploading new Micropython or custom AT command firmware to the ESP-01/01S modules.
• Serial Debugging: Monitoring the serial print output from the running application on the ESP module.
• Configuration Tool: Configuring network settings or module parameters via serial commands.

Equivalent Models:

• FTDI FT232R-based Adapters: However, these alternatives require manual wiring of the flash circuitry, unlike this integrated solution.
• CP2102-based Adapters: Another common USB-to-Serial chipset often used in similar adapters for ESP modules.
• Integrated ESP-01 Programmer Boards: Various generic boards offer the same functionality, but the CH340C version typically provides excellent driver stability.

Package Includes:

• 1 x CH340C WIFI Module Adapter Download Debug for ESP8266 ESP-01/01S