Is the screen fixed or can you write to any pixel?

You can write to any pixel. There are libraries out there that help import designs and functions, as well as fonts that can be displayed anywhere on the screen.

Is it compatible with a seeed xiao?

Yes, these displays I bought work Ok through I2C bus. According to the seed xiao Wiki, pins D4 & D5 are your SDA and SCL.

Can I display vertically? Do you have an example of code for Arduino?

You can. Will just need to find a library that handles the vertical conversion or write the code yourself. I do not have an example code at the time.

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Frienda 5 Pieces I2C Display Module 0.91 Inch I2C SSD1306 OLED Display Module Blue I2C OLED Screen Driver DC 3.3V~5V

Product ID: 406615791

⚡Ultra low power I2C interface

🔵Vivid 0.91" blue OLED

🛠️Compatible with Arduino & ESP

S$33

Duties & taxes included

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Description

🔵 Light up your projects with power-smart blue brilliance!

MULTIPACK ADVANTAGE - Five modules included—scale your innovation or share the tech love with your dev squad.
COMPACT LIGHTWEIGHT - Slim 38x12mm footprint fits effortlessly into any design without bulk or fuss.
BRILLIANT BLUE DISPLAY - Eye-catching 0.91-inch OLED with crisp 128x32 resolution for sleek, modern projects.
POWER SMART PERFORMANCE - I2C communication slashes power use compared to traditional LCDs—perfect for long-lasting builds.
PLUG PLAY COMPATIBILITY - Seamlessly integrates with Arduino, ESP8266, ESP32, STM32—your go-to for versatile prototyping.

The Frienda 5 Pieces I2C OLED Display Module features five compact 0.91-inch blue SSD1306 screens with 128x32 resolution. Powered by a low-energy I2C interface, these self-illuminated displays require no backlight and operate between 3.3V to 5V. Compatible with popular microcontrollers like Arduino and ESP series, they offer a sleek, efficient solution for professional-grade prototyping and embedded projects.

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