https://arduino.esp8266.com/stable/package_esp8266com_index.json
http://digistump.com/package_digistump_index.json
https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
https://raw.githubusercontent.com/wiki/tobozo/Arduino/package_deauther_index.json
https://mcudude.github.io/MiniCore/package_MCUdude_MiniCore_index.json
http://drazzy.com/package_drazzy.com_index.json
https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
https://raw.githubusercontent.com/stm32duino/BoardManagerFiles/main/package_stmicroelectronics_index.json