SSD1306 OLED Module

Device Note - SSD1306 OLED Module

What It Is

The SSD1306 OLED module is a small display used to show text, numbers, and simple graphics. In this course it gives you a second display to compare with the LED matrix.

What It Does In This Course

• shows text clearly on a bright pixel display
• helps you compare matrix output and OLED output
• gives you practice using I2C

Usual Connections

• VCC -> 3.3V
• GND -> GND
• SCL -> PB10
• SDA -> PB11

What To Notice

• It uses I2C, so it shares the same two signal lines used by other I2C devices.
• The screen is made of tiny pixels, so it can show more detail than the LED matrix.
• It is useful for status text, labels, and simple interface feedback.

Good Questions To Ask

• How is this display different from the MAX7219 matrix?
• Why is I2C useful for small modules like this?
• When would you choose the OLED instead of the matrix?