OLED Display 0.91 inch

128x32 SSD1306

Width: 40.1 mm

Pinout — OLED Display 0.91 inch

Pin	Signal	Description
`SDA`	SDA	top left through-hole header pin
`SCL`	SCL	second through-hole header pin on left edge
`VCC`	power	third through-hole header pin on left edge
`GND`	ground	bottom left through-hole header pin

Example wiring diagram — OLED Display 0.91 inch

From	To	Wire
`board:A4`	`x1:SDA`	green
`board:A5`	`x1:SCL`	blue
`board:5V`	`x1:VCC`	red
`board:GND`	`x1:GND`	black

Example Arduino code — OLED Display 0.91 inch

This example was written and compile-checked for the arduino-uno. Codey Online adapts it to any other supported board for you.

#include <Wire.h>
#include <U8g2lib.h>

// 0.91" OLED modules are commonly SSD1306 128x32 I2C displays.
// Constructor uses the exact wiring: SDA=A4, SCL=A5.
U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE);

void setup() {
  Wire.begin();
  u8g2.begin();

  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB08_tr);
  u8g2.drawStr(0, 12, "OLED 0.91\" Example");
  u8g2.setFont(u8g2_font_6x10_tr);
  u8g2.drawStr(0, 28, "Hello from Arduino Uno");
  u8g2.sendBuffer();
}

void loop() {
  // Static demo: the message stays on screen.
}

Related components

1.28" Round TFT LCD 240x240 (GC9A01, SPI)

1602 LCD DISPLAY

1602 LCD I2C DISPLAY

8x8 RGB 64 LED Matrix 5V WS2812b

Build your Arduino or ESP32 project with AI

Describe what you want to build. Codey Online writes the code, draws the wiring diagram, compiles it and flashes your board straight from the browser.

Start for free