Description
Product Overview
The 2.42-inch Passive Matrix OLED Display Module is a large-format, high-contrast monochrome graphic display designed for embedded systems, IoT devices, and industrial applications. Powered by the SSD1309 driver IC and featuring a crisp 128×64 pixel resolution, this display delivers bright green text, detailed graphics, and custom icons on a true black background, all in a spacious 2.42-inch diagonal format – significantly larger than the common 0.96-inch and 1.3-inch OLEDs.
OLED (Organic Light Emitting Diode) technology requires no backlight, as each pixel emits its own light. This self-emissive design provides true blacks (inactive pixels are completely off), an exceptional contrast ratio of 10,000:1, and wide viewing angles – ensuring the display remains readable from virtually any angle while consuming minimal power.
This module features a dedicated RES (reset) pin for hardware display initialization and is factory-configured for I2C interface, requiring only two data lines (SDA and SCL) to connect to your microcontroller. The 5-pin layout (GND, VCC, SCL, SDA, RES) is compatible with most development boards and can be used directly with standard 4-pin I2C connections by tying the RES pin HIGH .
With support for both 3.3V logic, it is directly compatible with ESP32, ESP8266, STM32, Raspberry Pi, and other 3.3V development boards. For 5V systems (Arduino Uno), the module’s I2C lines are 5V tolerant, making it safe for direct connection .
Key Upgrade over SSD1306 Displays: Unlike the common 0.96″ SSD1306 displays, this 2.42″ module uses the SSD1309 controller, which features higher row drive current (40mA vs 15mA) needed for larger panels. This means your 2.42″ display will be noticeably brighter and more consistent across the entire screen compared to smaller OLEDs .
Key Features
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Large 2.42-Inch Active Area: 55.01 × 27.49mm display area – approximately 6 times larger than 0.96″ OLEDs, providing significantly more screen real estate for dashboards, data visualization, and UI elements
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Green Monochrome OLED: Bright green pixels on true black background provide excellent contrast (10,000:1) and a classic terminal-style appearance
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SSD1309 Driver IC: Advanced controller specifically designed for larger OLED panels, featuring higher row drive current for superior brightness uniformity, 256-step contrast control, and internal SRAM buffer (128 × 64 bits)
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I2C Interface: 5-pin connection (GND, VCC, SCL, SDA, RES) – requires only 2 data lines (SDA/SCL) with default address 0x3C, saving valuable GPIO pins
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Dedicated RESET Pin: Hardware reset pin allows external control of display initialization for reliable startup and recovery
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Wide Operating Temperature: Rated for -40°C to +80°C, suitable for industrial and outdoor applications
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Low Power Consumption: Only lit pixels consume power – typically 18-22mA when the display is active, making it ideal for battery-powered projects
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5V/3.3V Dual Voltage Compatibility: I2C logic is 5V tolerant; works with both 3.3V (ESP32/ESP8266) and 5V (Arduino) systems
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Display Type | Passive Matrix OLED (PMOLED) |
| Driver IC | SSD1309 |
| Resolution | 128 × 64 pixels |
| Display Color | Green (monochrome) |
| Pixel Pitch | 0.43 × 0.43 mm |
| Active Area (W × H) | 55.01 × 27.49 mm |
| Module Dimensions (W × H) | 60.5 × 37.0 mm |
| Contrast Ratio | 10,000:1 (typical) |
| Viewing Angle | >160° |
| Default Interface | I2C (SCL/SDA) – 0x3C address |
| Logic Supply Voltage (VDD) | 2.8 – 3.3V DC (3.0V typical) |
| Display Supply Voltage (VCC) | 12.5 – 13.5V (module internal) |
| Host Logic Compatibility | 3.3V (5V tolerant for I2C) |
| Typical Current | 18-22mA (50% display) / 290mA peak draw |
| Operating Temperature | -40°C to +80°C |
| Storage Temperature | -40°C to +85°C |
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