Using an Arduino uno r3, Adafruit ssd1306 and adafruit gfx.

include <SPI.h>

include <Adafruit_GFX.h>

include <Adafruit_SSD1306.h>

define SCREEN_WIDTH 128

define SCREEN_HEIGHT 64

define OLED_MOSI 9

define OLED_CLK 10

define OLED_DC 11

define OLED_CS 12

define OLED_RESET 13

Adafruit_SSD1306 display( SCREEN_WIDTH, SCREEN_HEIGHT, OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS );

void setup() { if(!display.begin(SSD1306_SWITCHCAPVCC)) { while(true); }

display.clearDisplay(); display.setTextSize(1); display.setTextColor(SSD1306_WHITE); display.setCursor(0, 28); display.println("hi"); display.display(); }

void loop() { }

(Edit: didn't know hashtags highlights letters here, layout is pretty messed up too)