Arduino Arduino Projects - Arduino Nano / ESP8266 / ESP32 Boards Manager ESP8266 https://arduino.esp8266.com/stable/package_esp8266com_index.json ESP32 https://dl.espressif.com/dl/package_esp32_index.json https://arduino.esp8266.com/stable/package_esp8266com_index.json, https://dl.espressif.com/dl/package_esp32_index.json