Interfacing the Arduino with an SSD1306 driven OLED Display Tutorial : Part 1, Part 2 oled_test Minimal code to interface the SSD1306 OLED with the Arduino Uno. oled_test2 Using the SSD1306 OLED as a buffered graphic display with the I2C at 400Khz Fast-Mode. oled_test3 Benchmarking the code with Wire.h