ESP8266 SMD Adapter Board

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  • The adapter is a little small, must solder the wifi board onto it carefully.
  • LED blink when power up or reset it, keep constantly blink or looks like kept on (57600) when flashing
  • Use a different USB-TTL for programming, sometimes can to use 3v3 for CH340G if the voltage not stable
  • remember to reset the board to leave flashing mode

Pin Definition

Esp breakout board.png
  • Silk print pin definitions associates to the pins on its top,
left from top to down: RST, ADC, CHPD, 16, 14, 12, 13, VCC, CS, DO, 10,
right from top to down: TXD, RXD, 4, 5, 0, 2, 15, GND, 9, DI, CLK


  • Only need power VCC GND for power up the module, and TX, RX for serial communication.
  • Wiring with FTDI FT232RL, CH341, etc, please refer to the attached image in product link.


Esp breakout board dimension.png