USB TO ESP8266 WIFI MODULE ADAPTER BOARD

CH340 USB to ESP8266 Serial Wireless WiFi Module Adapter is a compact programming and power interface board that provides seamless USB-to-serial conversion for ESP8266 modules. Featuring automatic firmware flashing capability and stable power regulation, it simplifies development with popular WiFi modules like ESP-01, ESP-07, and ESP-12.

Key Features:

• • CH340G USB-Serial: Reliable USB 2.0 to TTL UART conversion
  • Auto-Program Circuit: One-touch ESP8266 flashing mode
  • Dual Voltage Output: 3.3V (500mA) and 5V (for logic level conversion)
  • LED Indicators: Power and data transmission status
  • Universal Compatibility: Works with ESP-01/07/12 series modules

Technical Specifications:

• • USB Interface: CH340G chip (USB 2.0 full-speed)
  • Serial Protocol: TTL UART (3.3V logic levels)
  • Baud Rate: 9600-2Mbps (default 115200 for ESP8266)
  • Power Output: 3.3V @ 500mA (max), 5V @ 100mA
  • Supported ESP Modules: ESP-01, ESP-01S, ESP-07, ESP-12E/F
  • Operating Voltage: 5V USB power
  • Dimensions: 45mm × 18mm × 10mm

Pin Configuration:

• • 3.3V: Regulated power for ESP module
  • GND: Common ground connection
  • TXD: Transmit data to ESP’s RX
  • RXD: Receive data from ESP’s TX
  • GPIO0: Flash mode selector (pull low to program)
  • RST: ESP8266 reset control

Connection Guide:

• • For ESP-01 Module:
    • Adapter 3.3V → ESP-01 VCC
    • Adapter GND → ESP-01 GND
    • Adapter TXD → ESP-01 RX
    • Adapter RXD → ESP-01 TX
    • Adapter GPIO0 → ESP-01 GPIO0
  • Programming Mode:
    • Hold GPIO0 low during power-up
    • Release after firmware upload begins

Driver Installation:

• • Windows: Automatic via Windows Update or CH340 driver package
  • MacOS/Linux: Native support in most modern systems
  • Verify Installation: Check for new COM port in device manager

Applications:

• • ESP8266 Development: Firmware flashing and debugging
  • IoT Prototyping: Rapid WiFi module programming
  • Wireless Projects: Sensor networks and smart devices
  • Education: Learning WiFi and IoT programming
  • Module Testing: Functional verification of ESP8266

Equivalent Adapters:

• • CP2102 Adapter: Alternative USB-serial chip
  • FTDI Programmer: Higher-cost professional version

Datasheet:

• • Download CH340G Datasheet

Keywords:

• • CH340 ESP8266 Adapter
  • USB to ESP-01 Programmer
  • ESP8266 Serial Adapter
  • WiFi Module Flasher
  • ESP-01 Programming Board

Package Includes:

• • 1 x CH340 USB to ESP8266 Adapter Board