Imagine a smartwatch, portable medical device, or IoT sensor node requiring a display that's both compact and sharp, delivering excellent visibility across various lighting conditions while consuming minimal power. This need is now met by the 1.3-inch I2C/IIC OLED display module.

This 4-pin OLED module, offered by rhydoLABZ, provides embedded systems developers with an ideal display solution through its exceptional performance and ease of use. Featuring a monochrome 128×64 dot matrix design and I2C interface communication with microcontrollers, it significantly simplifies both hardware connections and software programming.

OLED (Organic Light-Emitting Diode) technology offers distinct advantages over traditional LCD displays. With self-emitting pixels that require no backlight, OLED screens achieve higher brightness, theoretically infinite contrast ratios, wider viewing angles, and faster response times. Additionally, OLED displays can be made thinner, consume less power, and operate across broader temperature ranges, making them ideal for portable devices and low-power applications.

The 1.3-inch OLED display module boasts these core characteristics:

• Ultra-Compact Size: The 1.3-inch display area makes it perfect for space-constrained applications.
• High Resolution: 128×64 pixel resolution provides sharp image and text display on the small screen.
• SSH1106 Controller: Incorporates the SSH1106 control chip for stable and reliable display driving.
• Wide Voltage Range: Compatible with 3.3V to 5V operation, allowing seamless connection with various microcontrollers including Arduino.
• Broad Temperature Range: Operates reliably in harsh environments from -40°C to 70°C.
• I2C Interface: Requires only two data lines for communication, simplifying hardware connections.

• Size: 1.3 inches
• Resolution: 128 × 64
• Control Chip: SSH1106
• Display Area: 29.42 × 14.7 mm
• Drive Voltage: 3.3-5V
• Operating Temperature: -40°C to 70°C
• Interface Type: IIC

The module uses a 4-pin interface with the following pin definitions:

• GND: Power ground
• VCC: Power positive (3.3V-5V)
• SCL: I2C clock line
• SDA: I2C data line

Connection simply requires linking GND and VCC to power, and SCL/SDA to the microcontroller's I2C interface. When using Arduino or similar microcontrollers, appropriate I2C libraries must be included, with the I2C address configured according to specific hardware connections.

• Wearable devices (smartwatches, fitness trackers)
• Portable medical equipment (glucometers, heart rate monitors)
• IoT devices (sensor nodes, smart home control panels)
• Industrial control (instrument displays, equipment status monitoring)
• DIY projects (mini game consoles, electronic pets)

Developing with this OLED module is straightforward. First, select the appropriate I2C library for your microcontroller (such as Arduino's Wire library). Initialize the I2C interface and set the module's I2C address, then use library functions to control the display for text or graphics.

For debugging, I2C diagnostic tools can verify communication. If the display malfunctions, check power connections, I2C wiring, and address configuration.

• 1 × 1.3-inch I2C/IIC OLED display module (4-pin)

The 1.3-inch I2C/IIC OLED display module offers embedded developers an attractive solution through its compact size, high resolution, low power consumption, and ease of implementation. Whether in wearables, IoT devices, or DIY projects, it delivers excellent visual performance while simplifying both hardware design and software development. For applications demanding high performance, low power, and miniaturization, this OLED module presents an ideal choice.