An OLED (Organic Light Emitting Diode) Display Module is a modern display technology used in electronics projects. It is thinner, brighter, and more power-efficient compared to traditional LCDs. Unlike LCDs, OLED displays do not require a backlight, as each pixel emits its own light, which results in high contrast and vibrant colors. ✨ Key Features: Works with I2C or SPI communication. Available in sizes like 0.91", 0.96", 1.3" etc. Displays text, graphics, and animations. Low power consumption. High contrast and wide viewing angle. Resolution commonly 128×32 or 128×64 pixels. ⚡ Applications: Wearable devices. Arduino/ESP32/NodeMCU display projects. Smart gadgets. IoT dashboards. Sensor data visualization. 🔗 Arduino Example (I2C OLED 128×64): #include <Wire.h> #include <Adafruit_GFX.h> #include <Adafruit_SSD1306.h> #define SCREEN_WIDTH 128 #define SCREEN_HEIGHT 64 Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1); void setup() { if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { for(;;); } display.clearDisplay(); display.setTextSize(2); display.setTextColor(WHITE); display.setCursor(10, 20); display.println("Hello!"); display.display(); } void loop() {}