Duino Coin Monitor Oled-esp8266 Install Library Arduino core for the ESP8266 : https://github.com/esp8266/Arduino Install Library : https://github.com/adafruit/Adafruit_BusIO https://github.com/adafruit/Adafruit_SSD1306 https://github.com/adafruit/Adafruit-GFX-Library https://github.com/bblanchon/ArduinoJson