0.42" White OLED Display 72x40 I2C SPI SSD1306 for Arduino
0.42" White OLED Display 72x40 I2C SPI SSD1306 for Arduino
0.42 Inch White OLED Display Module – 72×40 Resolution, I2C/SPI Interface
Upgrade your Arduino or microcontroller project with this compact 0.42-inch White OLED Display Module. Featuring a crisp 72×40 pixel resolution and driven by the reliable SSD1306 controller, this tiny screen delivers sharp, high-contrast white-on-black visuals — perfect for wearables, sensor readouts, smart gadgets, and DIY electronics builds.
Key Features
- Display Type: OLED – self-illuminating pixels, no backlight needed
- Screen Size: 0.42 inches diagonal
- Resolution: 72×40 pixels
- Driver IC: SSD1306
- Interface: I2C (IIC) and SPI – dual-mode flexibility
- Color: White display on black background
- Compatibility: Arduino, Raspberry Pi, ESP8266, ESP32, STM32, and other common microcontroller platforms
- Customizable: Supports custom code and display libraries
- Low Power Consumption: Ideal for battery-powered projects
Why Choose This OLED Module?
The SSD1306-based OLED display is one of the most widely used screen modules in the maker community. Its ultra-compact 0.42-inch form factor makes it a go-to choice when space is at a premium — wearable tech, mini dashboards, handheld instruments, and embedded systems all benefit from its small footprint and vivid output. The dual I2C/SPI interface ensures broad compatibility across virtually all popular development boards.
Specifications
| Brand | baishundianzi |
| Model | 0.42 Inch OLED Display LCD |
| Display Mode | 72×40 |
| Driver IC | SSD1306 |
| Interface | I2C / SPI |
| Display Color | White |
| High-Concern Chemicals | None |
| Country of Origin | Made in Mainland China |
Compatible With
- Arduino Uno, Nano, Mega, Pro Mini
- ESP8266 / ESP32
- Raspberry Pi (via I2C/SPI)
- STM32 and other ARM-based boards
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Frequently Asked Questions
Q: Is this 0.42-inch OLED display module compatible with Arduino IDE libraries?
A: Yes! The SSD1306 OLED display module is fully supported by popular Arduino libraries such as Adafruit SSD1306 and U8g2. Simply install the library through the Arduino IDE Library Manager, wire up the I2C or SPI pins, and you're ready to display text and graphics in minutes.
Q: What is the difference between the I2C and SPI interfaces on this module?
A: I2C (IIC) uses only 2 data lines (SDA and SCL) making wiring simpler and conserving GPIO pins, which is ideal when connecting multiple devices. SPI uses more pins but offers faster data transfer speeds — great for projects requiring rapid display updates. This module supports both, giving you flexibility based on your project needs.
Q: Can this OLED module be used in battery-powered or portable projects?
A: Absolutely. OLED displays consume very low power compared to traditional LCD screens because only the lit pixels draw current. This makes the 0.42-inch SSD1306 module an excellent choice for battery-powered wearables, portable meters, and handheld DIY electronics.