Using an SSD1306 display with Mongoose OS - SugarFreeOrbit/MosquittoMQTT GitHub Wiki
It's really simple. You need to add this library to ypur project and also include api_arduino_ssd1306.js in your init.js file. Then wire SCL, SDA, VCC, GND with the corresponding pins on the board(they are all named accordingly). For the software guidance go here.