https://botland.com.pl/moduly-wifi-esp8266/8241-modul-wifi-esp8266-nodemcu-v3-5904422300630.html
https://www.botnroll.com/en/esp/3558-lua-nodemcu-v3-wifi-module-esp8266-32mb-ch340g.html https://www.teachmemicro.com/nodemcu-pinout/
[env:nodemcuv2]
platform = espressif8266
board = nodemcuv2
framework = arduino