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 12/24
If every upload attempt results in an error ending with something like error: espcomm_open failed
Try changing the board to Generic ESP8266 Module, and in the sub menus, make sure the following sub-menu's are also set:
Flash Mode: DIO
Flash Frequency: 80MHz
Upload Using: Serial
CPU Frequency: 80MHz
Flash Size: 512K (no SPIFFS)
Reset Method: nodemcu
Faster Uploads! The serial upload speed defaults to 115200 bps, which is reliable, but can feel a bit slow. You can
increase the upload speed by a factor of about 8 by selecting 921600 under the Tools > Upload Speed menu.