The HKD 0.91-inch OLED display is a compact, high-contrast screen designed for Arduino, ESP32, Raspberry Pi, and other microcontroller projects. With a 128x32 pixel resolution and bright white monochrome output, it offers crisp text and graphics in a small footprint, making it ideal for portable, wearable, or space-limited projects.

This display communicates via the I2C interface, requiring only two data pins (SDA & SCL), making wiring simple and reducing pin usage. It is powered at 3.3V or 5V, making it compatible with a wide range of development boards.

Its self-illuminating OLED technology ensures excellent visibility, high contrast, and wide viewing angles compared to traditional LCDs, without requiring a backlight.

Features

128x32 resolution white monochrome OLED display
0.91-inch screen - compact size for embedded projects
I2C interface - requires only 2 pins for easy connection
High contrast, wide viewing angles with OLED technology
Compatible with Arduino, ESP8266, ESP32, STM32, Raspberry Pi and more
Works with 3.3V and 5V logic systems
Extremely low power consumption, ideal for battery-powered devices

Specifications

Display Type: OLED, Monochrome (White)
Resolution: 128 x 32 pixels
Interface: I2C (SDA, SCL)
Operating Voltage: 3.3V - 5V
Screen Size: 0.91 inch (diagonal)
Viewing Angle: >160
Module Dimensions (approx.): 38mm x 12mm x 3mm
Weight: ~4g

Applications

Arduino and Raspberry Pi display modules
IoT and wearable devices
System monitoring screens (temperature, voltage, status indicators)
Compact data display in robotics and automation projects

What's in the box
1 x HKD I2C OLED Display 0.91in 128x32 Resolution White Monochrome