Description
Product Overview
The 0.66-inch OLED Shield is a compact, high-contrast display module designed specifically for the Wemos D1 Mini series of ESP8266 development boards . This plug-and-play shield stacks directly onto your D1 Mini, providing a crisp 64×48 pixel monochrome display without the need for messy wiring or breadboards.
Powered by the SSD1306 driver IC and communicating via the I2C protocol (using just two pins: SDA and SCL), this display is the perfect companion for your IoT projects . Whether you’re building a smart sensor that displays temperature and humidity readings in real-time, a network monitor showing IP addresses and signal strength, or a mini interactive controller for your home automation system, this shield adds a professional visual interface to your ESP8266 projects .
OLED (Organic Light Emitting Diode) technology provides exceptional visibility in all lighting conditions. Each pixel emits its own light, delivering true blacks and high contrast without a power-hungry backlight, which is critical for battery-powered applications .
Key Features
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True Plug-and-Play Shield: Designed specifically for the Wemos D1 Mini form factor, this board stacks directly onto your D1 Mini with no soldering required for basic use .
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64×48 Pixel Resolution: Sharp enough for sensor data, status icons, simple graphics, and even small text-based menus.
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I2C Interface: Uses only two data lines (SDA and SCL), saving precious GPIO pins for other sensors and actuators .
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High Contrast OLED Display: Bright white pixels on a true black background for excellent readability in both bright sunlight and total darkness .
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Ultra-Low Power Consumption: OLED technology consumes power only on pixels that are lit, making it ideal for battery-powered IoT sensors and portable projects .
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Selectable I2C Address: The module supports two possible I2C addresses (0x3C or 0x3D), allowing you to avoid conflicts with other I2C devices on the same bus .
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Driver IC: SSD1306: Fully compatible with popular libraries like the “ESP8266-OLED-Shield-Display” library, Adafruit_SSD1306, U8g2, and MicroPython .
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Display Size | 0.66 inch (Diagonal) |
| Resolution | 64 × 48 pixels |
| Driver IC | SSD1306 |
| Communication | I2C / IIC (2-Wire) |
| Operating Voltage | 3.3V (supplied by the D1 Mini) |
| I2C Address | 0x3C (Default) or 0x3D (Configurable) |
| Display Color | White / Monochrome |
| Pin Connection | D1 (GPIO5) = SCL, D2 (GPIO4) = SDA |
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