i'm using arduino ide 1.8.12 opened preferences window and did enter
(all comma separated) into the Additional Board Manager URLs field. then i opened the boardmanager (Strg+Shift+I) and enter 'esp' in the search field. BUT I CAN'T FIND "esp8266 by ESP8266 Community". it's not listed. WHAT CAN I DO NOW ?
additive : is there a way to include a locally available json file in the arduino as a library? the file package_esp8266com_index.json is in the directory C: \ Users \ [user] \ AppData \ Local \ Arduino15
thanks in advance