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Last time I looked on Amazon I could get five I2C 0.96″ OLED SSD1306 displays for $14.99 (ASIN B08QJ7BL3R), that’s $3.00 each.[1] Why are two microcontrollers being used?
The experimental setup for this is eleven OLED displays with 128×64 pixels with an SSD1306 controller, all driven by an STM32 over I2C. ... I2C oled, oled, pixel, screen saver.