//arduino.esp8266.com/stable/package_esp8266com_index.json ~upd~ Download: Http

Installing ESP8266 in Arduino IDE (Windows, Mac OS X, Linux)

The URL http://arduino.esp8266.com/stable/package_esp8266com_index.json is the official index file required to add ESP8266 board support, including compilers and drivers for NodeMCU and Wemos devices, to the Arduino IDE. By pasting this URL into the "Additional Boards Manager URLs" field in the Preferences menu and installing the package via Boards Manager, developers can enable ESP8266 programming capabilities. Read the full installation guide at Random Nerd Tutorials . Installing ESP8266 in Arduino IDE (Windows, Mac OS