Waveshare 0.91inch 128×32 I2C OLED Module

Waveshare 0.91inch OLED Module is a compact general OLED display module with a 128 x 32 pixel screen and I2C communication. It is designed for embedded projects that need a small white display for sensor values, device status, simple menus, and compact control interfaces.

The module uses an SSD1306 display controller reference, supports white display color, and works with 3.3V or 5V operating voltage. The I2C interface requires only two signal pins, making it practical for microcontroller and single-board-computer projects with limited GPIO availability.

For related Waveshare OLED options, compare the Waveshare 0.96inch OLED Module, Waveshare 1.3inch OLED HAT, and Waveshare 2.23inch OLED HAT. For a compact LCD alternative, see the Waveshare 0.96inch LCD Module.

Technical Specifications

Interface Notes & Hardware Guidance

• I2C wiring: Connect SDA and SCL to the host controller I2C bus, then connect VCC and GND according to the selected operating voltage.
• Voltage planning: The module supports 3.3V and 5V operation, but the host board and signal wiring should still be checked for logic-level compatibility.
• Driver support: Use SSD1306-compatible OLED libraries or Waveshare reference examples when integrating with common microcontrollers or single-board computers.
• Display planning: The 128 x 32 resolution is best suited for compact text, icons, sensor readings, system status, and short interface prompts.
• Mechanical layout: Confirm the module dimensions and mounting clearance against your enclosure or panel before final assembly.

Packing List

FAQ

What display driver does this OLED module use?

The official selection guide lists SSD1306 for this module, so use SSD1306-compatible OLED libraries or examples.

What resolution does the display provide?

The module provides a 128 x 32 monochrome OLED display area on a 0.91inch panel.

Does it use I2C communication?

Yes. It uses an I2C interface and requires only two signal pins, SDA and SCL, plus power and ground.

Can it work with both 3.3V and 5V systems?

The official operating-voltage reference is 3.3V / 5V, but users should still verify host-board logic levels and wiring before integration.

What is this display best suited for?

It is best suited for compact readouts such as sensor values, device status, simple menus, and short system messages.