“I will show in this instructable how to connect a NodeMCU V2 Amica (ESP8266) via I2c to an OLED display based on the famous SSD1306 chip. For the OLED we will use in this instructable an OLED Shield which comes with the solderes 0,96” inch OLED and 3 button + 3 LEDs connected to an MCP23008…. It’s very easy to realise menu systems and other complex function with this shield …..”