Installing the ESP8266 Arduino Addon
Installing the Addon With the Arduino Boards Manager
If you already have a URL in there, and want to keep it, you can separate multiple URLs by placing a comma between them. (Arduino 1.8.5 added an expanded text box, separate links in here by line.)
Hit OK. Then navigate to the Board Manager by going to > > . There should be a couple new entries in addition to the standard Arduino boards. Look for . Click on that entry, then select .
Selecting the ESP8266 Thing Board
If the upload fails, first make sure the ESP8266 Thing is turned on – the red “PWR” LED should be illuminated.
The serial upload speed defaults to , which is reliable, but can feel a bit slow. You can increase the upload speed by a factor of about 8 by selecting under the > menu.
This faster upload speed can be slightly less reliable, but will save you loads of time!
There are still some bugs to be fleshed out of the esptool, sometimes it may take a couple tries to successfully upload a sketch. If you continue to fail, try turning the ESP8266 Thing on then off, or unplug then replug the FTDI in. If you still have trouble . Please Comment Bellow I Will Try To Solve Your Problem