ESP8266 Thing Developpment Board w/ Headers Introduction

1/23/2018 ESP8266 Thing Development Board Hookup Guide - learn.sparkfun.com

https://learn.sparkfun.com/tutorials/esp8266-thing-development-board-hookup-guide/all 3/24

This section provides a quick overview of the Thing Dev Board’s main components.

Serial and I C Header

The header on the left provides an interface for serial, I C, and power:

Label

ESP8266 I/O

Function(s)

Notes

GND Ground (0V).

3V3 3.3V

2 GPIO2, SDA Can either be used as ESP8266 GPIO2 or I C serial

data (SDA).

14 GPIO14,

SCL, SCLK

Can either be used as ESP8266 GPIO14 or I C serial

clock (SCL).

Also used as the SPI clock (SCLK).

RST The ESP8266's active-low reset input. The board

includes a 10kΩ pull-up resistor on this pin.