This is a 0.91 inch diagonal 128×32 OLED display module with an embedded SSD1306 controller, communicating via I 2 C interface. Note that the SSD1306 is a controller for 128×64 OLED display. Since ...

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Aside from the Nano it has an SD card and associated level shifter, and an SSD1306 i2c screen. Most of the Arduino’s lines drive the floppy interface, so the five-button control comes to a ...