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Here’s a detailed description of the 0.96 Inch I2C/IIC 4-Pin OLED Display Module (Blue) — widely used in Arduino and embedded projects:

???? 0.96 Inch I2C OLED Display Module (Blue)

???? Overview:

This 0.96-inch OLED display is a compact, high-contrast screen that uses organic LEDs (OLEDs) to display information without a backlight. It communicates over the I²C (IIC) protocol using only two data lines and is perfect for microcontrollers like Arduino, ESP32, Raspberry Pi, and others.

This version has blue pixels on a black background, giving excellent readability even in low light.

???? Key Specifications:

???? Pinout (4-Pin Header):

Note: Always confirm voltage compatibility (some modules are 3.3V only).

???? Common Uses:

• Displaying sensor data (temperature, humidity, etc.)

• Battery indicators and voltmeters

• Mini GUIs for embedded devices

• Clocks, counters, and stopwatches

• Status indicators for IoT systems

✅ Advantages:

• High contrast and clarity (self-emissive pixels)

• Wide viewing angle

• Low power usage

• No need for a backlight

• Compact and lightweight

• Easy to code with available libraries

????️ Libraries for Arduino & ESP:

???? Example I²C Address:

• Usually 0x3C (some variants use 0x3D)

• Can be confirmed using I²C scanner code

⚠️ Tips:

• Use I²C pull-up resistors if your board doesn't already have them (4.7kΩ typical).

• Keep wires short (<30 cm) for reliable I²C communication.

• If screen stays blank, check contrast settings, address, and power source.